Stigonema robustum N.L.Gardner

(

Stigonema r obus turn, G-ardner , sp. nov.	NEW Y°Rfr

Univ.Calif.Publ.Bot.14:9. pi.4. 27 S 1927.	B°Jardeh

Plants forming dark, loose, spongy layers
3-4 mm. thick; filaments much branched, the
branches being of 3-5 orders, arising on all
sides at irregular intervals, usually a few in
e group, and widely divaricate; main filaments
up to 160 p. diam., with a more or less irregular
outline; branches of different orders reduced In
size; cells aeruginous, homogeneous, 10-15 ^ diam.,
in more or less complex groups arranged in fairly
well defined layers perpendicular to the long axis;
heterocysts few and poorly defined; hormogoniferous
branches very short and blunt, closely congested;
cell walls at first hyaline, becoming dark-brown
in age,thin and close fitting.

Forming spongy layers on moist soil and rocks.
Kuliang, near Foochow, Chine. Chung, nos. A280,
A296, A308, 0317, A396. Type, no. A280, in the
Farlow Herbarium, Harvard University, Cambridge,
Mass.

The species is similar to Stigonema	mamillosa,
(Lyngb.) Ag. The plants are more robust,	the fila-
ments are much larger, and. the grou is of	cells more
complex than in that species.

EX

FARLOW HERBARIUM, HARVARD UNIVERSITY

FLORA OF CHINA

FUKIEN PROVINCE

NEW YOKK
nOTAN I CAL,
GARDEN

Stigonema robustum Gardner

No. 296.

Coll. H. H. Chung
Det. N.L.Gardner

Kuliang near Foochow
July 1926.

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FARLOW HERBARIUM, HARVARD UNIVERSITY

FLORA OF CHINA

FUKIEN PROVINCE

A. 317

No.

Stigonema robustum Gardner

NEW Y Cm
SOTA N 1C A!
GARDEN

Kuliang near Foochow
July 1926.

Coll. H. H. Chung
Det. N.L.Gardner

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