Pikea pinnata Setch.

• Region

  North America

• Country

  United States of America

• State/Province

  California

• County/Municipio

  San Francisco Co.

• City/Township

  San Francisco

• Locality

  growing on stones at and just below extreme low water mark at Fort Point

• Coordinates

  37.8106, -122.477

• Coordinate Uncertainty (m)

  264.569

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates of geogr. center of Fort Point. Measured from coord. to farthest extent of the point to find linear extent (253 m). Input info. into MaNIS Georef. Calc. to find uncert. rad. (Bounded Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Phycotheca Boreali-Americana. Collins, Holden, and Setchell.

648. Pikea pinnata setcheii mss.

Growing on stones at and just below extreme low water mark at

Fort Point, San Francisco, California, Feb. 18, 1898.

W. A. SETCHELL.

Fronds reaching a height of 25cm., broadly pyramidal in outline ;
main stem sometimes prominent but obscured in all larger plants by the
long and flexuous primary branches, decidedly flattened and usually nar-
row ; primary branches arising irregularly; secondary branches and
branchlets more uniform and arranged in a very regularly pinnate fashion ;
cystocarps situated in the short and much swollen tips of the branchlets,
considered by Schmitz to be characteristic of the genus Pikea; structure
of the frond as in P. California Ilarv.

The specimens referred to this species have been among the assem-
blage of forms passing under the name of P. Californica. The habit of
the plant is totally different and constantly so.

W. A. S.

6 7 8 9 10 w, -v T V

The New York
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COLUMBIA

00900591