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Pilayella gardneri Collins

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drawing of Pilayella gardneri
plants with plurilocular organs
Illustrations:
Abbott and Hollenberg 1976, p. 147, fig. 108 (microscopic detail, plurilocular plant); Smith 1944, pl. 13, fig. 5 (microscopic detail, plurilocular plant), fig. 6 (plurilocular organs, detail), fig. 7 (vegetative detail, as Pylaiella gardneri); Wynne 1969a, pl. 1, fig. a (photo: attached swarmers), figs. b–e (photos: plurilocular and sterile plants) Display references
Pacific Coast Distribution:
Box I., Long Beach Park, Vancouver I., British Columbia (R. Norris and Wynne 1969, p. 137); Arch Cape, Clatsop Co., Ore. (Markham and Celestino 1977, p. 259); Humboldt Co., Calif. (DeCew in HSC); Shell Beach, Sonoma Co., Calif. (Kjeldsen 1995, p. 28) to Monterey Peninsula, Calif. (Smith 1944, p. 93, as Pylaiella gardneri); San Luis Obispo Co., Calif. (Piedras Blancas and Montaña de Oro State Park: Sparling 1971, p. 237) Display references
Life History:
direct development demonstrated in culture, with recycling of filamentous thalli by zooids from plurilocular organs, unilocular organs unknown (Wynne 1969a, p. 5); coordination of life history with that of its obligate host (the sporophyte of Postelsia palmaeformis) not yet elucidated Display references
Phenology:
annual plant appearing in June and disappearing in January, restricted to the period when its annual host is mature

Pl=plurilocular; U=unilocular; S=sterile
J F M A M J J A S O N D
BRITISH
COLUMBIA
Pl          xx           Uncommon, epiphytic on Postelsia palmaeformis in the mid and low intertidal. R. Norris and Wynne 1969, p. 137. Display references
U                        
S                        
COLUMBIA
RIVER
Pl                    x   Rare, epiphytic on Postelsia palmaeformis in drift. Markham and Celestino 1977, p. 259. Display references
U                        
S                        
CAPE
ARAGO
Pl              xxxx   Uncommon, epiphytic on Postelsia palmaeformis in the mid and low intertidal (in HSC).
U                        
S                        
CAPE
MENDOCINO
Pl                        
U                        
S                        
POINT
ARENA
Pl x        x      x     Common, epiphytic on Postelsia palmaeformis in the mid and low intertidal in exposed habitats. Johansen 1966a, p. 94. Kjeldsen 1995, p. 28. Display references
U                        
S x        xx    xxx
SAN
FRANCISCO
Pl x              x  x   Common, epiphytic on Postelsia palmaeformis in the mid and upper intertidal. Smith 1944, p. 93 (as Pylaiella gardneri). Display references
U                        
S x          xxxxxx

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Page dated: Mon Feb 13 21:24:26 2006
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