Grateloupia howeii Setch. & N.L.Gardner

NEW YORK
BOTANICAL
Q?RDEN
MARINE ALGAE OF THE GULF OF CALIFORNIA
Hancock-Guggenheim Expeditions of 1946
Grateloupla Howell S, & G.-
Locality: Ensenada de San Francisco, Sonora
February 14, 1946
Habitat: Rocky reef north of Pun ta de las Cuevas. Conglomerate and
igneous parts of reef with different floras.
Collected by E. Yale Dawson	No. 568
det by E#Y#D*
ALGAE
DISTRIBUTED BY THE ALLAN HANCOCK FOUNDATION
THE UNIVERSITY OF SOUTHERN CALIFORNIA
Grateloupla Howeii Setehell & Gardner, sp. nov.
Proe.Calif.Acad.Soi.IV.12:78ś.pi.83. 13 My 1824,
Fronds membranaceous, up to 30 cm. high
and 6 cm. wide, tapering to a small, short
stipe attached by a disk, unbranched, or fork-
ed near the base, and with an oecasional margin-
al lanceolate branch; the whole beset with numer-
ous Gigartinoid spines; eolor brownish red, nitexit
on drying; large cells of the subcortex 25-50 p.
long.
Cast ashore.
Type: Ho. 1370, Herb. Calif. Aoad. Sel.,
collected by Iran M. Johnston (Ho. 113), in
April, at San Esteban Island, Gulf of California.
Ve are dedicating this species to Dr. M. A.
Howe, to whom we sent specimens for study and for
comparison with G. denticulata Mont., to which it
seems closely related. After comparing it with
sections and a photograph of the type specimen of
G. denticulata he concludes that our plant is not
identical with that speoies.
NEW YORK BOTANICAL GARDEN
02213066
02213066