Dasya spinuligera Collins & Herv.

• Region

  North America

• Country

  Bermuda

• Locality

  Shelly Bay

• Coordinates

  32.3311, -64.7405

• Coordinate Uncertainty (m)

  315.819

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coord. on shore closest to geogr. center of Shelly Bay. Meas. from coord. to farthest extent of bay to find lin. ext. (304.25 m). Input info. into MaNIS Geo. Calc. to find uncert. radius.

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Dasya spinuligera sp. nov. Collins
Acad. Arts & Sci.53:130. An 1917.

9

& Hervey, proc. Am.

P. B. -A., ITo • 2188. Oellulis pericentralibus 5,corticatis,
cortice glabro, continuo, cellularum minorum, elongatarum;
ramis paucis, elongatis, ramulos breves»patentee, acutos,
gerentibus; apice ramuli junioris fasciculum densum ramel-
lorum ferente, adultioris nudo;ramellis densissimis,deciduis,
monosiphoniis, dichotomis, rectis nec divaricatis, cellulis
2-3 diam.longis, supeme 1 diam.modo, diametro ubique aequali;
stichidiis conicis vel cylindro-conicis, prope basin fasciculi
ramellorura ortis; tetrasporangiis 2-4 in verticillo; frondis
substantia firm»; colore rubro obscuro. plate IV,figs.24-25.

Pericentral cells 5, corticate, cortex smooth,even, of
small elongate cells; with few elongate branches, bearing
patent, acute ramuli, the younger with a dense fascicle of
ramelli at the tip, the older naked; ramelli very dense,
deciduous, rnonosiphonous, dichotomous»straight, not divari-
cate; cells 2-3 diam. long,above only 1 diam.; diameter the
same throughout; stichidia conical or cylindric-conical,
arising near the base of a fascicle of ramuli; tetrasporangia
2-4 in a whorl. Substance of the frond firm; color dark red;
Type in Collins herbarium,I?o.7243; collected at shelly Bay,
May 4, 1912. Collins.

When ramelli are abundant, this plant somewhat resembles
D.punicea, but the ramelli show no tendency to a verticillate
arrangement, and fall off more easily. The surface of the
frond after the ramelli have fallen is smooth and even, not .
knotted and irregular as in D. punicea;the cells are small
and regular, not large and irregular as in that species.

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Phycotheca Boreali-Americana.	Collins, Holden and Setchell.

Algae of Bermuda.

2188. Oasya spinuligera Collins & Hervey ms.

Dingle Bay, Feb. 8, 1915.

A. B. HERVEY.

THE F. S. COLLINS HERBARIUM

PRESENTED TO

THE New York botanical garden
by N. L. BRITTON, 1922

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