Scytonema tenue N.L.Gardner

  • Filed As

    Scytonemataceae
    Scytonema tenue N.L.Gardner ( holotype )

  • Collector(s)

    J. N. F. Wille 106, 28 Dec 1914

  • Location

    Puerto Rico. Rio Piedras, on rocks by a reservoir.

  • Habitat

    Growing on rocks at a water reservoir. Growing on rocks.

  • Identifiers

    NY Barcode: 00953344

    Occurrence ID: 555843a0-0b51-4594-b4bf-8b959ec449c6

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    Send comments on this specimen record

  • Region

    West Indies

  • Country

    Puerto Rico

  • Locality

    Rio Piedras, on rocks by a reservoir

  • Coordinates

    18.3949, -66.0465

  • Coordinate Uncertainty (m)

    2791.57

  • Georeferencing Method

    Georeferencing Quick Reference Guide, Version 2012. Can't find reservoir. Located coordinates of geogr. center of Rio Piedras. Measured from coord. to farthest extent of the district to find linear ext. (2780 m). Used MaNIS Georef. Calculator to find uncertainty (Bounded Area).

  • Geodetic Datum

    WGS84

  • Distribution

    Map all specimens of this taxon

I

NEW YORK

THE NEW YORK BOTANICAL GARDEN BOTANICAL

DARIUS OGDEN MILLS FUND	CARDEN

| |	FRESH-WATER ALGAE OF PORTO RICO

' g	COLLECTED BY PROFESSOR N. WILLJi	T\/PF

1; g jjjf	Rio Piedras December 28, 1914

1 CO	,

Si O) No. /Ok

$y ¿Lc- y2£<£Ms2A&<Ayy.......f.........

(V^.)(m».(Typfe

^¿O^Uvsi^ ’tiUYwJL, Gv'JU*.] o^JLs-«v*^

Nott^^vM. Ao,»	IxL.lHV

Determined uy Francis Drouet

Ww "U Ru^' HoxJj, 21W “M*

Scytonema tenue sp. nov.

Plate 17, figure 36

Filaments mostly straight, erect, parallel, closely associated,
forming a velvety stratum, sparsely branched, the branches aris-
ing near the base, 0.75-1 mm. high, 6-8 M diam.; trichomes o.5-
6*5 u diam. at the apices, 2-2.5 times as long in older parts; cells
cylindrical in the body of the filament, and not constricted,
slightly dolioform at the apices, pale aeruginous, homogeneous;
sheath subgelatinous, hyaline, homogeneous, 2-2.o m thick; het-
eroeysts cylindrical, quadrate to 2 times as long.

Growing on rocks at a water reservoir, E-o Piedras, no. 106,
type.

The closest atliiut;'-: ol” lli*-s sj^*ies oi fc jtonema appaieinl,>•
are S. tenv.i nniim S^lu'i.Ksle, a^^paller species \v ith thinnei
sheath, and intermedium De Wild., a I irger species.

36. Scytonema, tenue

Portion of a typical filament with geminate
branching...................................................................................................... x 250

Annotated

............., 19 ^ S', by........

Y°/»7r

BOTANICAL

00953344