Taxon Checklist - The William & Lynda Steere Herbarium

Closterium

Echinella

Echinella acharii C.Agardh

Echinella fasciculata Lyngb.

Actinotaenium

Actinotaenium cruciferum (de Bary) Teiling

Actinotaenium cucurbita (Bréb. ex Ralfs) Teiling

Actinotaenium curtum (Bréb. ex Ralfs) Teiling

Actinotaenium globosum (Bulnheim) Kurt Först. ex Compère

Actinotaenium minutissimum (Nordst.) Teiling

Actinotaenium mooreanum (W.Archer) Teiling

Actinotaenium palangula (Bréb. & Ralfs) Teiling

Actinotaenium phymatosporum (Nordst.) Kouwets & Coesel

Actinotaenium rufescens (Cleve) Teiling

Actinotaenium spinospermum (Joshua) Kouwets & Coesel

Actinotaenium truncatum (Bréb. & Ralfs) Teiling ex Růžička & Pouzar

Arthrodesmus

Arthrodesmus bifidus Bréb.

Arthrodesmus convergens Ehrenb. ex Ralfs

Arthrodesmus glaucescens Wittr.

Arthrodesmus incus Hassall ex Ralfs

Arthrodesmus incus var. extensus O.F.Andersson

Arthrodesmus incus var. intermedius Wittr.

Arthrodesmus octocornis Ehrenb. ex Ralfs

Arthrodesmus quadricaudatus (Ehrenb.) Ehrenb.

Arthrodesmus tenuissimus W.Archer

Bambusina

Bambusina borreri (Ralfs) Cleve

Bambusina Kütz. ex Kütz.

Calocylindrus

Calocylindrus curtus (Bréb.) Kirchn.

Cosmaridium

Cosmaridium silesiacum P.G.Richt.

Cosmarium

Cosmarium aitchisonii Schaarschm.

Cosmarium alatum var. aequatoriense Nordst.

Cosmarium alpinum Racib.

Cosmarium amoenum Bréb. ex Ralfs

Cosmarium anceps P.Lundell

Cosmarium angulare L.N.Johnson

Cosmarium angulosum Bréb.

Cosmarium anomalum Delponte

Cosmarium aphanichondrum Nordst.

Cosmarium arctoum Nordst.

Cosmarium areolatum H.C.Wood

Cosmarium asphaerosporum var. strigosum Nordst.

Cosmarium bidentulatum

Cosmarium bioculatum Bréb. ex Ralfs

Cosmarium bioculatum f. depressum Schaarschm.

Cosmarium bioculatum var. atomus Eckert

Cosmarium bireme Nordst.

Cosmarium biretum Bréb. ex Ralfs

Cosmarium biretum f. subconspersa Boldt

Cosmarium bisphaericum Printz

Cosmarium blytti Wille

Cosmarium botrytis Menegh.

Cosmarium botrytis var. emarginatum Hansg.

Cosmarium brebissonii Ralfs

Cosmarium broomei Thwaites ex Ralfs

Cosmarium caelatum Ralfs

Cosmarium calcareum Wittr.

Cosmarium calodermum var. suecicum Nordst.

Cosmarium circulare Reinsch

Cosmarium commissulare

Cosmarium commissurale Bréb. ex Ralfs

Cosmarium commutatum P.G.Richt.

Cosmarium concinnum (Rabenh.) Reinsch

Cosmarium connatum Bréb. ex Ralfs

Cosmarium conncinum (Rabenh.) Reinsch

Cosmarium conspersum Ralfs

Cosmarium conspersum var. rotundatum Wittr.

Cosmarium contractum O.Kirchner

Cosmarium corbula (Bréb.) Bréb.

Cosmarium Corda ex Ralfs

Cosmarium crenatum Ralfs ex Ralfs

Cosmarium crenatum var. nanum Wittr.

Cosmarium crenulatum (Ehrenb.) Bréb.

Cosmarium cucumis Corda ex Ralfs

Cosmarium cucumis var. helveticum Nordst.

Cosmarium cucurbita Bréb. ex Ralfs

Cosmarium curtum Bréb. ex Ralfs

Cosmarium cyclicum P.Lundell

Cosmarium debaryi var. minus Hansg.

Cosmarium debaryi W.Archer

Cosmarium decedens (Reinsch) Racib.

Cosmarium dentatum Wolle

Cosmarium depressum (Nägeli) P.Lundell

Cosmarium dianae Ehrenberg & Ralfs

Cosmarium difficile Lütkemüller

Cosmarium dovrense Nordst.

Cosmarium ehrenbergii Menegh. & Ralfs

Cosmarium elegantissimum P.Lundell

Cosmarium exornatum Printz

Cosmarium fontigenum Nordst.

Cosmarium formosulum var. aequatoriense Nordst.

Cosmarium galeritum Nordst.

Cosmarium gemmiferum Bréb.

Cosmarium geometricum West & G.S.West

Cosmarium gerstenbergeri P.G.Richt.

Cosmarium globosum Bulnh.

Cosmarium globosum subsp. subarctoum Lagerh.

Cosmarium granatum Bréb. ex Ralfs

Cosmarium granatum f. subgranatum Nordst.

Cosmarium granatum var. concavum Lagerh.

Cosmarium gutwinskii Printz

Cosmarium hammeri

Cosmarium holmiense

Cosmarium holmiense var. integrum P.Lundell

Cosmarium hookeri

Cosmarium humile

Cosmarium impressulum

Cosmarium inaequalipellicum

Cosmarium incisum Joshua

Cosmarium isthmochondrum

Cosmarium jacobsenii

Cosmarium kjellmanii

Cosmarium kjellmanii subsp. grande Wille

Cosmarium klebsii

Cosmarium laeve

Cosmarium latum

Cosmarium latum Bréb.

Cosmarium latum var. margaritatum P.Lundell

Cosmarium leibleinii Kütz. & Ralfs

Cosmarium leiodermum

Cosmarium lepidum

Cosmarium longii

Cosmarium lortetianum Rabenh.

Cosmarium lundellii

Cosmarium magdalenense

Cosmarium malmei

Cosmarium margaritatum (P.Lundell) J.Roy & Bisset

Cosmarium margaritiferum

Cosmarium maximum (Børgesen) West & G.S.West

Cosmarium medioscrobiculatum

Cosmarium meneghinii Bréb.

Cosmarium meneghinii f. crenulata (Naeg.) P.G.Richt.

Cosmarium meneghinii var. angulosum (Bréb.) Rabenh.

Cosmarium minutum

Cosmarium monochondrum

Cosmarium naegelianum Bréb.

Cosmarium nitidulum

Cosmarium norimbergense f. depressum West & G.S.West

Cosmarium notabile

Cosmarium novae-terrae

Cosmarium nymannianum

Cosmarium pachydermum

Cosmarium pachydermum var. minus Nordst.

Cosmarium palangula Bréb. ex Ralfs

Cosmarium pardalis Cohn

Cosmarium parvulum

Cosmarium pectinoides Wolle

Cosmarium pericymatium Nordst.

Cosmarium phaseolus

Cosmarium phaseolus f. minus Boldt

Cosmarium plicatum

Cosmarium pluviale

Cosmarium polonicum

Cosmarium polymorphum Nordst.

Cosmarium porrectum

Cosmarium portianum

Cosmarium praecisum Borge

Cosmarium praemorsum

Cosmarium pseudarctoum Nordst.

Cosmarium pseudobotrys

Cosmarium pseudobotrytis F.Gay

Cosmarium pseudoconnatum

Cosmarium pseudonitidulum

Cosmarium pseudonitidulum var. validum West & G.S.West

Cosmarium pseudoprotuberans

Cosmarium pseudopyramidatum

Cosmarium punctatum Nordst.

Cosmarium punctulatum Bréb.

Cosmarium punctulatum subsp. brasiliense

Cosmarium pygmaeum

Cosmarium pyramidatum Bréb.

Cosmarium quadrangulatum Hantzsch

Cosmarium quadratulum (F.Gay) De Toni

Cosmarium quadratum

Cosmarium quadrum var. minus Nordst.

Cosmarium quimbyii H.C.Wood

Cosmarium quinarium

Cosmarium ralfsii Bréb.

Cosmarium ralfsii var. azoricum Bohlin

Cosmarium regnellii

Cosmarium regnellii f. minor Boldt

Cosmarium regnesi

Cosmarium regnesii Reinsch

Cosmarium reniforme (Ralfs) W.Archer

Cosmarium reniforme var. elevatum West & G.S.West

Cosmarium repandum

Cosmarium rostratum W.B.Turner

Cosmarium rupestre (Nägeli) W.Archer

Cosmarium salinum Hansg.

Cosmarium santamartense

Cosmarium schleipacheanum

Cosmarium schuebeleri

Cosmarium septentrionale

Cosmarium sexnotatum

Cosmarium silesiacum P.G.Richt.

Cosmarium speciosum P.Lundell

Cosmarium speciosum var. lapponicum Nordst.

Cosmarium speciosum var. pseudospeciosum Hansg.

Cosmarium speciosum var. simplex Nordst.

Cosmarium sportella Bréb. ex Kütz.

Cosmarium striatum

Cosmarium subcostatum

Cosmarium subcrenatum

Cosmarium subcucumis

Cosmarium subglobosum

Cosmarium suborbiculare

Cosmarium subpachydermum

Cosmarium subpalangula

Cosmarium subprotumidum

Cosmarium subpunctulatum

Cosmarium subrenicchianum

Cosmarium subspeciosum

Cosmarium substriatum Nordst.

Cosmarium subtaxichondrum

Cosmarium subtumidum Nordst.

Cosmarium subundulatum

Cosmarium tenue W.Archer

Cosmarium tetrachondrum

Cosmarium tetragonum (Nägeli) W.Archer

Cosmarium tetraophthalmum Bréb. ex Ralfs

Cosmarium tetraophthalmum f. minor (Kütz.) Bréb. & Joshua

Cosmarium tetraophthalmum var. lundellii Wittr.

Cosmarium tinctum

Cosmarium tortum Lagerh. & Nordst.

Cosmarium trafalgaricum Wittr.

Cosmarium trilobulatum

Cosmarium triplicatum

Cosmarium truncatum (Bréb.) Naeg.

Cosmarium tumidum

Cosmarium turgidum

Cosmarium turpinii Bréb.

Cosmarium turpinii var. subcrenulatum Racib.

Cosmarium undulatum

Cosmarium venustum (Bréb.) W.Archer

Cosmarium viride

Cosmocladium

Cosmocladium constrictum (W.Archer) W.Archer

Cosmocladium perissum

Cosmocladium pulchellum

Cosmocladium qumbyii

Cosmocladium saxonicum

Cosmocladium tumidum

Desmidium

Desmidium aptogonum

Desmidium baileyi (Ralfs) Nordst.

Desmidium bambusianum Bréb.

Desmidium cylindricum Grev.

Desmidium grevillei (Kütz. ex Ralfs) de Bary

Desmidium laticeps Nordst.

Desmidium limbatum var. mucosum Chauv.

Desmidium micrasterias

Desmidium mucosum (Dillwyn) Bréb.

Desmidium pseudostreptonema

Desmidium pulchrum

Desmidium quadrangulatum

Desmidium quadratum Nordst.

Desmidium quadratum var. graciliceps Nordst.

Desmidium swartzii

Didymocladon

Didymocladon furcigerus Bréb.

Didymocladon sexangularis Bulnh.

Didymoprium

Didymoprium borreri Ralfs

Didymoprium grevillei

Docidium

Docidium dilatatum Maskell

Docidium ehrenbergii Ralfs

Docidium nodulosum Bréb.

Docidium trabecula (Ehrenb.) Reinsch

Docidium truncatum Bréb. ex Ralfs

Dysphinctium

Dysphinctium connactum (Bréb.) de Bary

Dysphinctium globosum var. perpusillum Hansg.

Dysphinctium notabile (de Bary) Hansg.

Dysphinctium notabile var. pseudospeciosum Hansg.

Dysphinctium pusillum Hansg.

Dysphinctium tumens var. minus Hansg.

Euastrum

Euastrum affine

Euastrum ampullaceum

Euastrum ansatum

Euastrum ansatum var. emarginatum Hansg.

Euastrum ansatum var. suprapositum Nordst.

Euastrum bidentatum

Euastrum binale

Euastrum binale var. granulatum Hansg.

Euastrum binale var. insulare Hansg.

Euastrum ciastonii

Euastrum circulare

Euastrum concinnum Rabenh.

Euastrum crassum (Bréb.) Kütz. ex Ralfs

Euastrum crassum var. scrobiculatum P.Lundell

Euastrum cuneatum

Euastrum denticulatum

Euastrum didelta

Euastrum didelta var. scrobiculata Nordst.

Euastrum didelta var. tatricum Racib.

Euastrum divaricatum P.Lundell

Euastrum divaricatum subsp. tieteense Löfgr. & Nordst.

Euastrum dubium

Euastrum elegans (Bréb.) Ralfs

Euastrum everettense

Euastrum gemmatum (Bréb.) Ralfs

Euastrum gemmatum var. angusticolla Hansg.

Euastrum humerosum Ralfs

Euastrum incavatum Joshua & Nordst.

Euastrum inerme (Ralfs) P.Lundell

Euastrum insigne Hassall ex Ralfs

Euastrum insulare (Wittr.) J.Roy

Euastrum lobatum

Euastrum monticulosum

Euastrum multilobatum

Euastrum obesum Joshua

Euastrum oblongum (Grev.) Ralfs

Euastrum oblongum var. oblongiforme f. scrobiculata Nordst.

Euastrum verrucosum var. alatum Wolle

Euastrum verucosum Ehrenb.

Groenbladia

Groenbladia taylorii

Gymnozyga

Gymnozyga bambusina J.Jacobsen

Gymnozyga moniliformis Ehrenb. & Kütz.

Haplotaenium

Haplotaenium minutum

Heimansia

Hyalotheca

Hyalotheca dissiliens

Hyalotheca dissiliens var. bidentula Nordst.

Hyalotheca dissiliens var. tatrica Racib.

Hyalotheca dissiliens var. tridentula Nordst.

Hyalotheca dubia

Hyalotheca dubia var. subconstricta Hansg.

Hyalotheca mucosa

Hyalotheca ralfsii

Hyalotheca undulata Nordst.

Spirogyra hymerae M.E.Britton & B.H.Smith

Micrasterias

Micrasterias americana

Micrasterias angulosa

Micrasterias apiculata

Micrasterias apiculata var. fimbriata (Ralfs) Nordst.

Micrasterias arcuata

Micrasterias arcuata var. expansa (Nordst.) Bailey

Micrasterias brachyptera P.Lundell

Micrasterias confecta

Micrasterias conferta

Micrasterias crenata

Micrasterias crux-melitensis (Ehrenb.) Trevis.

Micrasterias decemdentata (Nägeli) W.Archer

Micrasterias denticula Istv.

Micrasterias denticulata Bréb.

Micrasterias denticulata subsp. quadridentata Nordst.

Micrasterias denticulata var. basiprotuberans C.Bullard

Micrasterias denticulata var. intermedia Nordst.

Micrasterias depauperata

Micrasterias disputa

Micrasterias disputata

Micrasterias expansa

Micrasterias fimbriata

Micrasterias foliacea

Micrasterias furcata

Micrasterias furcata denticulata

Micrasterias granulata

Micrasterias integra Nordst.

Micrasterias jenneri

Micrasterias laticeps

Micrasterias mahabuleshwarensis

Micrasterias medusae Joshua

Micrasterias multifida

Micrasterias muricata Bailey ex Ralfs

Micrasterias neodamensis

Micrasterias nordstedtiana

Micrasterias oscitans

Micrasterias papillifera Bréb.

Micrasterias papillifera var. glabra Nordst.

Micrasterias pinnatifida

Micrasterias radiata West & G.S.West

Micrasterias radiosa

Micrasterias radiosa var. swainii West & G.S.West

Micrasterias rosula Kütz.

Micrasterias rota (Ehrenb.) Menegh.

Micrasterias rotata

Micrasterias rotula Ehrenb.

Micrasterias schweinfurthii Cohn

Micrasterias sol

Micrasterias speciosa

Micrasterias thomasiana

Micrasterias torreyi

Micrasterias triangularis

Micrasterias truncata (Corda) Bréb.

Micrasterias truncata var. excavata Nordst.

Micrasterias velata

Octacanthium

Octacanthium octocornis

Onychonema

Onychonema filiforme (Ehrenb. ex Ralfs) J.Roy & Bisset

Onychonema laeve Nordst.

Oocardium

Oocardium depressum

Oocardium stratum Nägeli

Oocardium stratum var. plenum Wittr.

Phymatodocis

Phymatodocis nordstedtiana

Pleurotaeniopsis

Pleurotaeniopsis cucumis (Ralfs) Lagerh.

Pleurotaenium

Pleurotaenium breve

Pleurotaenium coronatum (Bréb. ex Ralfs) Rabenh.

Pleurotaenium crenulatum (Ehrenb. ex Ralfs) Rabenh.

Pleurotaenium dilatatum

Pleurotaenium ehrenbergii (Ralfs) Delponte

Pleurotaenium indicum (Grunow) P.Lundell

Pleurotaenium maximum (Reinsch) P.Lundell

Pleurotaenium nobile

Pleurotaenium nodosum (Bailey ex Ralfs) P.Lundell

Pleurotaenium nodulosum (Bréb. ex Ralfs) Rabenh.

Pleurotaenium nodulosum var. coronatum (Bréb.) Bréb. & Rabenh.

Pleurotaenium ovatum Nordst.

Pleurotaenium rectum

Pleurotaenium rectum f. minor (Wille) Nordst.

Pleurotaenium sceptrum

Pleurotaenium subcoronulatum (W.B.Turner) West & G.S.West

Pleurotaenium trabecula

Pleurotaenium trabecula var. granulatum Ralfs & Rabenh.

Pleurotaenium tridentulatum

Pleurotaenium truncatum (Bréb. ex Ralfs) Nägeli

Pleurotaenium turgidum

Pleurotaenium verrucosum (Ralfs) H.C.Wood

Sphaerozosma

Sphaerozosma archeri Gutw.

Sphaerozosma aubertianum

Sphaerozosma excavatum Ralfs ex Ralfs

Sphaerozosma filiforme

Sphaerozosma pulchellum W.Archer

Sphaerozosma pulchrum var. brasiliense Nordst.

Sphaerozosma pygmaeum (W.Archer) Rabenh.

Sphaerozosma serratum

Sphaerozosma vertebratum (Bréb.) Ralfs

Spinocosmarium

Spinocosmarium quadridens (H.C.Wood) Prescott & A.M.Scott

Spondylosium

Spondylosium moniliformis

Spondylosium papillosum

Spondylosium planum (Wolle) West & G.S.West

Spondylosium pulchellum (W.Archer) W.Archer

Spondylosium pygmaeum (Cooke) West

Spondylosium secedens (de Bary) W.Archer

Spondylosium tetragonum

Staurastrum

Staurastrum aculeatum Ralfs

Staurastrum aculeatum var. brauni Reinsch

Staurastrum alternans

Staurastrum alternans var. basichondrum Schmidle

Staurastrum anatinum

Staurastrum apiculatum

Staurastrum arachne

Staurastrum arctiscon (Ehrenb. ex Ralfs) P.Lundell

Staurastrum aristiferum Ralfs

Staurastrum asperum

Staurastrum avicula

Staurastrum bacillare Bréb. ex Ralfs

Staurastrum bicorne

Staurastrum bieneanum

Staurastrum botrophilum

Staurastrum brachiatum

Staurastrum brachioprominens var. archerianum Bohlin

Staurastrum brebissonii

Staurastrum breviaculeatum

Staurastrum brevispina

Staurastrum brevispinum (Bréb.) Ralfs

Staurastrum bulnheimianum Rabenh.

Staurastrum cerastes

Staurastrum clevei (Wittr.) J.Roy

Staurastrum columbianum

Staurastrum concinnum

Staurastrum connatum (P.Lundell) J.Roy & Bisset

Staurastrum controversum

Staurastrum cuspidatum Bréb.

Staurastrum cyrtocerum

Staurastrum dejectum Bréb.

Staurastrum dejectum var. debaryanum Nordst.

Staurastrum depressum

Staurastrum dickiei Ralfs

Staurastrum dickiei var. circulare W.B.Turner

Staurastrum dilatatum

Staurastrum dispar

Staurastrum echinatum

Staurastrum elongatum

Staurastrum erlangense

Staurastrum exsectum

Staurastrum fascicular

Staurastrum forficulatum

Staurastrum franconicum Reinsch

Staurastrum furcatum

Staurastrum furcigerum (Bréb.) W.Archer

Staurastrum furcigerum f. eustephanum (Ralfs) Nordst.

Staurastrum geminatum

Staurastrum gracile

Staurastrum gracile var. nanum Wille

Staurastrum habeebense Irenee-Marie

Staurastrum hantzschii

Staurastrum heimerlianum

Staurastrum heimerlianum var. spinulosum Lütkemüller

Staurastrum hirsutum (Ehrenb.) Ehrenb.

Staurastrum hirundinella

Staurastrum hystrix Ralfs

Staurastrum intricatum Delponte

Staurastrum laeve

Staurastrum leptacanthum

Staurastrum leptocladum

Staurastrum leptocladum var. divergens Wolle

Staurastrum longissimum Borge

Staurastrum lunatum

Staurastrum maamense W.Archer

Staurastrum macrocerum

Staurastrum margaritaceum

Staurastrum megacanthum P.Lundell

Staurastrum megalonotum

Staurastrum merianii Reinsch

Staurastrum minnesotense

Staurastrum minutissimum Auersw.

Staurastrum monticulosum

Staurastrum mucronatum

Staurastrum munitum

Staurastrum muricatum

Staurastrum muticum

Staurastrum muticum f. minus (Reinsch) Rabenh.

Staurastrum notarisii Delponte

Staurastrum ophiura P.Lundell

Staurastrum orbiculare

Staurastrum orbiculare Ralfs

Staurastrum pachyrhynchum Nordst.

Staurastrum papillosum

Staurastrum paradoxum Meyen ex Ralfs

Staurastrum paradoxum var. chaetoceras Schröd.

Staurastrum paradoxum var. longipes Nordst.

Staurastrum pilosum

Staurastrum pilosum f. minor Nordst.

Staurastrum polymorphum Bréb.

Staurastrum polytrichum (Perty) Rabenh.

Staurastrum pringsheimii Reinsch

Staurastrum protractum

Staurastrum psilosporum Nordst. & Löfgr.

Staurastrum punctulatum

Staurastrum punctulatum var. kjellmani Wille

Staurastrum pygmaeum

Staurastrum quadrangulare

Staurastrum ravenelii

Staurastrum reinschii

Staurastrum rostellum

Staurastrum rotula

Staurastrum saxonicum

Staurastrum scabrum

Staurastrum sebaldi Reinsch

Staurastrum senarium

Staurastrum sexangulare (Bulnheim) P.Lundell

Staurastrum silesiacum Hilse

Staurastrum spinosum (Bréb.) Ralfs

Staurastrum spongiosum

Staurastrum spongiosum var. griffithsianum (Naeg.) Lagerh.

Staurastrum striolatum (Nägeli) W.Archer

Staurastrum subcornutum

Staurastrum teliferum

Staurastrum tetracerum

Staurastrum trapezicum

Staurastrum trelleckense

Staurastrum tricorne

Staurastrum tumidum Ralfs

Staurastrum tumidum var. polonica Lütkemüller

Staurastrum vestitum

Staurastrum viride

Staurodesmus

Staurodesmus connatus (P.Lundell) Thomasson

Staurodesmus convergens (Ehrenb. ex Ralfs) S.Lill.

Staurodesmus cuspidatus (Bréb.) Teiling

Staurodesmus dejectus (Bréb.) Teiling

Staurodesmus dickiei

Staurodesmus extensus

Staurodesmus incus (Hassall ex Ralfs) Teiling

Staurodesmus megacanthus

Staurodesmus obsoletus (Hantzsch) Teiling

Teilingia

Teilingia excavata (Ralfs ex Ralfs) Bourr.

Teilingia granulata (J.Roy & Bisset) Bourr.

Tetmemorus

Tetmemorus brebissonii

Tetmemorus brebissonii f. minor de Bary

Tetmemorus giganteus

Tetmemorus granulatus Bréb. ex Ralfs

Tetmemorus granulatus var. nanus Bréb. ex Ralfs

Tetmemorus laevis Kütz. ex Ralfs

Triplastrum

Triplastrum simplex

Triploceras

Triploceras gracile

Triploceras verticillata

Xanthidium

Xanthidium aculeatum

Xanthidium antilopaeum (Bréb.) Kütz.

Xanthidium antilopaeum var. canadense Joshua

Xanthidium armatum

Xanthidium brebissonii Ralfs

Xanthidium concinnum

Xanthidium cristatum

Xanthidium cristatum var. uncinatum Bréb.

Xanthidium fasciculatum

Xanthidium fasciculatum var. subalpinum Wolle

Xanthidium furcatum

Xanthidium polygonum

Xanthidium robinsonianum W.Archer

Xanthidium tylerianum

Gonatozygon

Gonatozygon brebissonii de Bary

Gonatozygon brebissonii var. laeve (Hilse) W.West & G.S.West

Gonatozygon kinahanii (W.Archer) Rabenh.

Gonatozygon laeve Hilse

Gonatozygon monotaenium de Bary

Gonatozygon monotaenium var. pilosellum Nordst.

Gonatozygon ralfsii

Ancylonema

Ancylonema nordenskioeldii Berggr.

Cylindrocystis

Cylindrocystis acanthospora (Lagerh.) Lütkemüller

Cylindrocystis brebissonii (Ralfs) de Bary

Cylindrocystis brebissonii var. purpurea Lagerh.

Cylindrocystis crassa

Cylindrocystis cyanosperma Lagerh.

Cylindrocystis endospira

Cylindrocystis jenneri (Ralfs) West & G.S.West

Cylindrocystis melleor

Cylindrocystis triannulata J.D.Hall, J.C.Adair & R.M.McCourt

Mesotaenium

Mesotaenium aplanosporum Taft

Mesotaenium aureo-nucleatum

Mesotaenium braunii

Mesotaenium chlamydosporum

Mesotaenium endlicherianum Nägeli

Mesotaenium endlicherianum var. caldariorum Lagerh.

Mesotaenium endlicherianum var. grande Nordst.

Mesotaenium macrococcum (Kütz. ex Kütz.) J.Roy & Bisset

Mesotaenium micrococcum (Kütz.) O.Kirchner

Mesotaenium rubescens

Mesotaenium violascens

Netrium

Netrium digitus

Netrium interruptum (Bréb. ex Ralfs) Lütkemüller

Netrium lamellosum

Netrium naegeli

Netrium naegelii (Bréb. ex W.Archer) West

Netrium oblongum (de Bary) Lütkemüller

Roya

Roya obtusa (Bréb.) West & G.S.West

Roya obtusa var. montana West & G.S.West

Spirotaenia

Spirotaenia acuta Hilse

Spirotaenia bahusiensis

Spirotaenia bryophila (Bréb.) Lütkemüller

Spirotaenia closteridia var. elongata Hansg.

Spirotaenia condensata (Bréb.) Ralfs

Spirotaenia endospira

Spirotaenia trabeculata

Penium

Penium acanthosporum

Penium brebissonii Ralfs

Penium closterioides Ralfs

Penium cruciferum (de Bary) Wittr.

Penium cruciferum var. pluriradians Wittr.

Penium curtum (Bréb. ex Ralfs) Kütz.

Penium curtum f. majus Wille

Penium cylindricum

Penium cylindrus

Penium digitus Bréb. ex Ralfs

Penium digitus var. ventriosum Lagerh.

Penium jenneri Ralfs

Penium lamellosum f. gigantea Bréb. ex Kütz.

Penium margaritaceum

Penium minutissimum Nordst.

Penium minutum (Ralfs) Cleve

Penium mooreanum var. constrictum Schmidle

Penium mooreanum W.Archer

Penium navicula Bréb.

Penium oblongum de Bary

Penium phymatosporum var. majus Wittr. & Nordst.

Penium polymorphum (Perty) Perty

Penium ralfsii

Penium rufescens Cleve

Penium spirostriolatum

Penium subrufescens Börge Pett.

Penium truncatum Bréb. ex Ralfs

Craterospermum

Craterospermum laetevirens A.Braun

Debarya

Debarya glyptosperma (de Bary) Wittr.

Debarya glyptosperma f. formosa Transeau

Euzygogonium

Euzygogonium humifusum Itzigs.

Gonatonema

Gonatonema boodlei (G.S.West) West

Gonatonema notabile (Hassall) Wittr.

Gonatonema ventricosum var. tirolense Hansg.

Leda

Leda capucina Bory ex A.Mougeot & Nessler

Leda decussata (Kütz.) Itzigs.

Leda torulosa (Kütz.) A.Braun

Mesocarpus

Mesocarpus angustus Hassall

Mesocarpus ericetorum

Mesocarpus ericetorum var. fluitans

Mesocarpus ericetorum var. virescens

Mesocarpus Hassall

Mesocarpus intricatus

Mesocarpus nummuloides Hassall

Mesocarpus parvulus (Hassall) Hassall

Mesocarpus pleurocarpus de Bary

Mesocarpus scalaris Hassall

Mongeotia

Mongeotia gracilis Kütz.

Mougeotia

Mougeotia atroviolacea

Mougeotia bicalyptrata Wittr.

Mougeotia boodlei (West & G.S.West) Collins

Mougeotia caerulescens

Mougeotia calcarea (Cleve) Wittr.

Mougeotia calospora (Palla) Czurda

Mougeotia capucina

Mougeotia columbianus (Wolle) De Toni

Mougeotia compressa

Mougeotia corniculata Hansg.

Mougeotia elegantula Wittr.

Mougeotia elongata

Mougeotia flava Hilse

Mougeotia fragile (G.Zeller) De Toni

Mougeotia gelatinosa Wittr.

Mougeotia genuflexa (Roth) C.Agardh

Mougeotia genuflexa var. radicans (Kütz.) Hansg.

Mougeotia gracilis

Mougeotia gracilis var. elongata Kütz.

Mougeotia gracillima (Hassall) Wittr.

Mougeotia intricata

Mougeotia laetevirens var. varians Wittr.

Mougeotia laetevirens Wittr.

Mougeotia macrospora

Mougeotia maltae Skuja

Mougeotia miamiana

Mougeotia mirabilis

Mougeotia notabile

Mougeotia nummuloides (Hassall) De Toni

Mougeotia olettensis Soub.

Mougeotia ovalis (Hassall) Nordst.

Mougeotia parvula

Mougeotia parvula var. angusta (Hassall) Kirchn.

Mougeotia quadrangulata

Mougeotia quadrata (Hassall) Wittr.

Mougeotia radicans

Mougeotia robusta (de Bary) Wittr.

Mougeotia robusta var. biornata Wittr.

Mougeotia scalaris Hassall

Mougeotia serpentina (Müller) C.Chev.

Mougeotia sphaerocarpa

Mougeotia stictica Kütz.

Mougeotia subtilissima Hilse

Mougeotia tenuis (Cleve) Wittr.

Mougeotia transeaui

Mougeotia viridis (Kütz.) Wittr.

Pleurocarpus

Pleurocarpus columbianus Wolle

Pleurocarpus mirabilis A.Braun

Pleurodiscus

Pleurodiscus purpurea

Rhynchonema

Rhynchonema elongata H.C.Wood

Rhynchonema Kütz.

Rhynchonema pulchella H.C.Wood

Rhynchonema reversum Kütz.

Sirogonium

Sirogonium ceylanicum Wittr.

Sirogonium kamatii Kadlub.

Sirogonium retroversum H.C.Wood

Sirogonium sticticum Kütz.

Spirogyra

Spirogyra adnata (Vaucher) Kütz.

Spirogyra bellis (Hassall) P.Crouan & H.Crouan

Spirogyra bellonae G.Zeller

Spirogyra borgeana

Spirogyra borgei Kadlub.

Spirogyra braunii

Spirogyra calospora

Spirogyra cataeniformis (Hassall) Kütz.

Spirogyra catenaeformis (Hassall) Kütz.

Spirogyra circumlineata Transeau

Spirogyra communis (Hassall) Kütz.

Spirogyra condensata (Vaucher) Kütz.

Spirogyra corrugata Transeau

Spirogyra crassa (Kütz.) Kütz.

Spirogyra croasdaleae Blum

Spirogyra daedalea

Spirogyra decimina (O.F.Müll.) Dumort.

Spirogyra decimina var. triplicata Collins

Spirogyra densa

Spirogyra dentireticulata C. C. Jao

Spirogyra diducta

Spirogyra diluta

Spirogyra dubia

Spirogyra dubia var. longiarticulata Kütz.

Spirogyra echinospora Blum

Spirogyra ellipsospora

Spirogyra elongata (Vaucher) Kütz.

Spirogyra fallax (Hansg.) Wille

Spirogyra flavescens (Hassall) Kütz.

Spirogyra flavicans

Spirogyra fluviatilis Hilse

Spirogyra fusco-atra

Spirogyra gracilis

Spirogyra grevilleana (Hassall) Kütz.

Spirogyra grevilleana var. heterospora Stockm.

Spirogyra groenlandica

Spirogyra hantzschii

Spirogyra hartigii (Kütz.) De Toni

Spirogyra hassallii (Jenner) P.Crouan & H.Crouan

Spirogyra hatillensis

Spirogyra heeriana

Spirogyra hyalina

Spirogyra hydrodictya Transeau

Spirogyra illinoiensis Transeau

Spirogyra inconstans Collins

Spirogyra inflata (Vaucher) Dumort.

Spirogyra insignis (Hassall) Kütz.

Spirogyra insignis var. hantzschii (Rabenh.) P.Petit

Spirogyra intermedia

Spirogyra irregularis

Spirogyra jenneri

Spirogyra juergensii Kütz.

Spirogyra jugalis (Dillwyn) Kütz.

Spirogyra lagerheimii f. breviarticulata Wittr.

Spirogyra lagerheimii Wittr.

Spirogyra laxa Kütz.

Spirogyra lineata

Spirogyra lineata var. brasiliensis Nordst.

Spirogyra longata (Vaucher) Kütz.

Spirogyra longata var. reversa (Hassall) O.Kirchner

Spirogyra loskosiana

Spirogyra lubrica

Spirogyra lutetiana

Spirogyra majuscula Kütz.

Spirogyra majuscula var. brachymeres Stizenb.

Spirogyra malmeana Hirn

Spirogyra maxima (Hassall) Wittr.

Spirogyra maxima f. megaspora Lagerh.

Spirogyra maxima var. inaequalis (Wolle) Nordst. & Wittr.

Spirogyra micropunctata Transeau

Spirogyra mirabilis (Hassall) Kütz.

Spirogyra naegelii

Spirogyra narcissiana Transeau

Spirogyra neglecta (Hassall) Kütz.

Spirogyra nitida

Spirogyra nodulosa

Spirogyra oblongata

Spirogyra olivascens Rabenh.

Spirogyra orbicularis

Spirogyra orthospira f. purpurea Collins

Spirogyra orthospira Naeg.

Spirogyra pallida

Spirogyra parvispora

Spirogyra parvula (Transeau) Czurda

Spirogyra plena (West & G.S.West) Czurda

Spirogyra polymorpha

Spirogyra porticalis (O.F.Müll.) Dumort.

Spirogyra porticalis f. minor Collins

Spirogyra porticalis var. tenuispira Collins

Spirogyra pratensis Transeau

Spirogyra punctiformis

Spirogyra quadrata

Spirogyra quadrilaminata

Spirogyra quinina (O.F.Müll.) Dumort.

Spirogyra quinina var. inaequalis Nägeli ex Kütz.

Spirogyra rectangularis Transeau

Spirogyra rectispira

Spirogyra reflexa Transeau

Spirogyra replicata

Spirogyra reticulata Nordst.

Spirogyra retroversa

Spirogyra reversa

Spirogyra rivulalris

Spirogyra rivularis (Hassall) Rabenh.

Spirogyra rivularis var. minor Hansg.

Spirogyra rugulosa Iwanoff

Spirogyra setiformis (Roth) Kütz.

Spirogyra setiformis var. inequalis Wolle

Spirogyra singularis Nordst.

Spirogyra spreeiana Rabenh.

Spirogyra stagnalis Hilse

Spirogyra stictica (Sm.) Wille

Spirogyra stricta

Spirogyra subaequa

Spirogyra submarina

Spirogyra submaxima Transeau

Spirogyra subsalsa

Spirogyra subtilis

Spirogyra subventricosa

Spirogyra sylvestris Hilse

Spirogyra tenuissima (Hassall) Kütz.

Spirogyra tuberculata Lagerh.

Spirogyra turfosa

Spirogyra varians (Hassall) Kütz.

Spirogyra velata Nordst.

Spirogyra velata var. occidentalis Transeau

Spirogyra ventricosa

Spirogyra weberi

Spirogyra woodsii

Staurospermum

Staurospermum franconicum Reinsch

Staurospermum quadratum (Hassall) Kütz.

Staurospermum viride Kütz.

Zygnema

Zygnema affine

Zygnema bifaria Bailey

Zygnema bipunctatum

Zygnema brebissonii

Zygnema catenatum Transeau

Zygnema chalybeospermum

Zygnema circumcarinatum Czurda

Zygnema crassum (Kütz.) De Toni

Zygnema cruciatum (Vaucher) C.Agardh

Zygnema cruciatum f. leiosporum Collins

Zygnema cyanosporum Cleve

Zygnema cylindricum

Zygnema deciminum C.Agardh

Zygnema decussatum Vaucher

Zygnema dillwynii

Zygnema dubium Hassall

Zygnema ericetorum (Kütz.) Hansg.

Zygnema fontana

Zygnema genuflexum (Roth) C.Agardh

Zygnema inflatum

Zygnema insigne (Hassall) Kütz.

Zygnema jenneri Hassall

Zygnema nitidum Hassall

Zygnema novae-caesareae Habeeb

Zygnema pachydermum

Zygnema pectinatum (Vaucher) C.Agardh

Zygnema pectinatum f. terrestre (Rabenh.) De Toni

Zygnema pectinatum var. confluens Lyngb.

Zygnema pectinatum var. conspicuum (Hassall) De Toni

Zygnema pectinatum var. decussatum (Vaucher) De Toni

Zygnema stagnale (Hassall) Kütz.

Zygnema stellinum (O.F.Müll.) C.Agardh

Zygnema subcruciatum Transeau

Zygnema tenue

Zygnema vaucheri C.Agardh

Zygnema vaucherii

Zygnema vaucherii var. subtile (Kütz.) Rabenh.

Zygnemopsis

Zygnemopsis decussata (Transeau) Transeau

Zygogonium

Zygogonium aequale

Zygogonium affine Kütz.

Zygogonium anomalum Kütz.

Zygogonium anomalum var. validum (Hassall) Stizenb.

Zygogonium conspicuum

Zygogonium decussatum (Vaucher) Kütz.

Zygogonium delicatulum Kütz.

Zygogonium didymum Rabenh.

Zygogonium ericetorum

Zygogonium ericetorum var. fluitans Kütz.

Zygogonium ericetorum var. terrestre O.Kirchner

Zygogonium exuvielliforme

Zygogonium frigidum Brügger

Zygogonium glaciale

Zygogonium hercynicum

Zygogonium insigne Brügger

Zygogonium parvulum

Zygogonium pectinatum Kütz.

Zygogonium plakountiosporum

Zygogonium rupestre

Zygogonium salinum

Zygogonium saxonicum Rabenh.

Zygogonium sudeticum Rabenh.

Zygogonium torulosum Kütz.

Sirogoniopsis