Pylaiella gardneri Collins

• Region

  North America

• Country

  United States of America

• State/Province

  California

• County/Municipio

  San Francisco Co.

• City/Township

  San Francisco

• Locality

  Land's End, on Postelsia palmaeformis

• Coordinates

  37.7837, -122.512

• Georeferencing Method

  Estimated using locality data.

• Distribution

  Map all specimens of this taxon

Phyootheca Boreali-Americana
Collins, Holden and Setohell
1384, Pylaiella Gardneri n. sp.
On Postelsia palmaeformis, Land’s End, San Francisco, Cal-
ifornia, Dec. 9, 1905.
Basal layer endophytic, of irregularly branching filaments,
cells. 006-01 mm. diam., 1-4 diam. long, emitting erect branches
which project from the surface of the host, .008-.012 mm. diam.,
cells 1-1£ diam. long; filaments simple or rarely forked, somewhat
increasing in size upward, mostly terminating in long, plurilocular
sporangia, generally more or less torulose, .01-.02 mm. diam.,
largest at or near the summit, which is usually rounded, but
sometimes terminates in a few vegetative cells; unilocular
sporangia unknown.
In the material here distributed the sterile, vegetative fila-
ments are few and short; much the greater part of the filaments
have been changed into plurilocular sporangia, up to 1 mm. long,
and with only a few vegetative cells at the base. The general
appearance of the sporangia is like that of P. littoralis, the form
of the original cells continuing visible, the division of the cells
extending to showing 8 loculi in a cross section. The distorted
endophytic filaments branch freely, but the free filaments are
almost entirely simple.
W. A. SETCHELL and N. L. GARDNER.
F. S. C.