Lyngbya erecta N.L.Gardner

• Region

  West Indies

• Country

  Puerto Rico

• Locality

  Caguas to San Lorenzo, on stones in a brook in the vicinity of San Lorenzo

• Coordinates

  18.1494, -65.974

• Coordinate Uncertainty (m)

  9341.57

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates of geogr. center of San Lorenzo. Measured from coord. to farthest extent of the municipality to find linear ext. (9330 m). Used MaNIS Georef. Calculator to find uncertainty (Bounded Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

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THE NEW YORK BOTANICAL GARDEN

DARIUS OGDEN MILLS FUND

FRESH-WATER ALGAE OF PORTO RICO:

COLLECTED BY PROFESSOR N. WILLE
CAGUAS TO SAN LORENZO	JANUARY 18, 1915

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FRANCIS DROUET <-£>~ I f

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Lyngbya erecta sp. nov.

Plate 8, figure 75

Filaments relatively straight and more or less parallel, at-
tached at one end, forming a dense velvety stratum, 4-7 mm.
long, 3.;>4 ¡j diam.; trichomes 1.4-1.6 \x diam., not constricted at
the dissepiments, not attenuated at the apices; cells mostly quad-
rate, but varying from slightly shorter to 2 times as long as
the diameter, cross-walls moderately conspicuous, apical cell

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founded, terminal wall not thickened; sheath subgelatinous, hya-
line, homogeneous.

Growing on stones in a brook in the vicinity of San Lorenzo,
no. 501 a, type.

		
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75

75. Lyngbya erecta

Terminal portions of two filaments, the one below
with young protruding trichome.......................................... x 1,000

6 7 8 9 10 _ v

The New York

copyright reserved botanical Garden

Lyngbya erecta Setchell & Gardner, sp* nov*
Proc.Calif.Acad.Sei. IV.19 :122.30 D 1930.

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71

Filaments 1-2 mm. long, attached by a single
basal cell and standing perpendicular to the host,
forming dense tufts, straight and smooth or slight-
ly flexuous, 2.6-3 yi diam.; trichomes 1.3-1.6 p. diam.,
slightly constricted at the cross walls, sheath dis-
tinct, hyaline, smooth; cells quadrate to very slight-
ly longer or shorter; terminal cell rounded, blunt,
non-calyptrate.

Epiphytic on Ahnfeldtia gigartinoides.

Type: No. 173634, Herb.Calif. Acad. Sci., col-