Hydroclathrus clathratus (C.Agardh) M.Howe

• Region

  North America

• Country

  United States of America

• State/Province

  California

• County/Municipio

  Los Angeles Co.

• Locality

  Santa Catalina Island, at Pebbly Beach near Avalon

• Coordinates

  33.3365, -118.327

• Coordinate Uncertainty (m)

  5391.57

• Georeferencing Method

  BioGeomancer, Guide to Best Practices for Georefer. Located coordinates of geogr. center of Avalon. Measured from coord. to farthest extent of the city x2 = linear extent (5380 m). Used MaNIS Georef. Calculator to find uncertainty (Near a Feature).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Jew york
loTANlCAL
QARDEN
sflxju* drodathrus clathratus (Bory) Howe
Fronds very irregular in form, in age much lacerated, 5-16 cm.
diam., sessile, attached to the substratum by a broad base, sometimes
several bases confluent, differentiated into two layers of cells; the
apertures varying much in size and form and the frond involute along
their margins; color yellowish brown; hairs in small tufts in the center
of expanded sori.
Growing in tide pools in the lower littoral belt. On the west coast
of Mexico near the mouth of the Gulf of California.
Howe, in Britton and Millspaugh, Bah. Flor., 1920, p. 590; Setchell
and Gardner, Mar. Alg. Gulf of Calif., 1924, p. 727. Hydroclathrus
cancellatus Bory, in Diet, class., vol. 8, 1825, p. 419; Harvey, Phyc.
Austral., 1859, Tab. 98; Mitchell, in Murray, Phyc. Mem., part 2,1893,
pp. 53-56, pi. 15, figs. 2-4. Encoelmm clathratum (Bory) Agardh,
Sp. Alg., vol. 1, part 2, 1822, p. 412. Fucus clathratus Bory, MS.,
fide Agardh, loc. cit.
The single species of Hydroclathrus is tropical and widespread in
both the Atlantic and the Pacific oceans. Our specimens, from the
Gulf of California, are old and we have been unable to detect any
gametangia.
HERBARIUM ? F
THE NEW YORK BOTANICAL GARDEN
ALGAE OF
Hydroclathrus clathratus (Bory) Howe
Setchell, W. A. & Gardner,-N. L. Melanopkyeea®
Univ. Qalif. Ptabl. Bot. 8: §43, 1925
NEW YORK BOTANICAL GARDEN
02243648
MARINE ÁLGÁE OF PACIFIC BAJA CALIFORNIA
Ken+on-Williams Expedition 1946
Hydroclathrus clathratus (Bory) Honre
Locality: isia Concha» Scammon Lego on
Habitat: Littoral» send flats
Collected by Woody Williams
det. by E.Y.D*
April 24, 1946
2506
ALGAE
DISTRIBUTED BY THE ALLAN HANCOCK FOUNDATION
THE UNIVERSITY OF SOUTHERN CALIFORNIA
NEW YOrtK
BOTAN ICAL
GARDEN
MARINE ALGAE OF CALIFORNIA
_Hydroclathrus clathratus (Borv) Hows
Locality: Santa Catalina Isl.
Habitat: Beach drift at Pebbly Beach near Avalon
Collected by E. Yale Dawson March 2i|.. 19A& No. 4913
det. by E. Y, D.
ALGAE
DISTRIBUTED BY THE ALLAN HANCOCK FOUNDATION
THE UNIVERSITY OF SOUTHERN CALIFORNIA
5W
vrANiCAU
garden
02243648
02243650
02243649