CENTER FOR PHYCOLOGICAL DOCUMENTATION
DECEW'S GUIDE

Pilayella gardneri Collins
	CONTENTS     FIGURES     ABOUT     INDEXES: Reds · Greens · Browns     KEYS: Browns

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 1969 a, pl. 1, fig. a ( photo: attached swarmers ), figs. b & ndash; e ( photos: plurilocular and sterile plants ) 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 Monta & ntilde; a de Oro State Park: Sparling 1971, p. 237 ) Life History: direct development demonstrated in culture, with recycling of filamentous thalli by zooids from plurilocular organs, unilocular organs unknown ( Wynne 1969 a, p. 5 ); coordination of life history with that of its obligate host ( the sporophyte of Postelsia palmaeformis ) not yet elucidated Phenology: annual plant appearing in June and disappearing in January, restricted to the period when its annual host is mature

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