CENTER FOR PHYCOLOGICAL DOCUMENTATION
DECEW'S GUIDE

Melanosiphon intestinalis ( Saunders ) Wynne
	CONTENTS     FIGURES     ABOUT     INDEXES: Reds · Greens · Browns     KEYS: Browns

Synonyms: Myelophycus intestinalis Saunders, M. intestinalis f. tenue Setchell et Gardner, Melanosiphon intestinalis f. tenue ( Setchell et Gardner ) Wynne Illustrations: Abbott and Hollenberg 1976, p. 193, fig. 155 ( habit ); Edelstein et al. 1970, p. 5, fig. 1 ( photo: habit ), p. 6, figs. 2 & ndash; 4 ( photos: unilocular organs with paraphyses ), fig. 5 ( photo: plurilocular organs ), p. 8, figs. 6 & ndash; 16 ( various plurilocular and unilocular organs with paraphyses ); Setchell and Gardner 1925, pl. 40, fig. 50 ( x-section, w/unilocular organs ); Wynne 1969 a, p. 46, fig. 11 ( gametophytic germlings ), p. 47, figs. 12 a, d ( x-section, vegetative anatomy and unilocular organs ), fig. 12 b ( x-section, vegetative anatomy and plurilocular organs ), fig. 12 c ( surface view, unilocular organs ), pl. 24, fig. a ( photo: x-section, unilocular organs ), fig. b ( photo: uprights developing from a basal system ), fig. c ( photo: surface view, unilocular organs ), figs. d, e ( photo: habit ) Pacific Coast Distribution: Atka I ., Aleutian Is ., Alaska ( Okamura 1933 b, p. 86 ) to Moss Beach, San Mateo, Co ., Calif. ( Wynne 1969 a, p. 46 ); disjunct to Punta Blanca, Baja Calif. ( R. Aguilar Rosas et al. 1984, p. 161 ) Taxonomy: Wynne 1969 a Life History: uprights macroscopic tubular plants with unilocular organs bear zooids which germinate to form a filamentous basal system. Uprights similar to parent plants grow from this basal system and bear unilocular organs. Other, much less common plants, of a more contorted morphology also occurred in culture. These plants bore plurilocular organs, and recycled directly. No sex has been found in this life history ( Wynne 1969 a, p. 45; also see Pedersen 1984 ) Phenology: plants are exclusively unilocular in the south, and unilocular and plurilocular in the north on separate plants ( specimens seen by DeCew at UBC; also see Edelstein et al. 1970 for Atlantic plants ) Biology: Scagel 1961, p. 528

							J	F	M	A	M	J	J	A	S	O	N	D
BRITISH COLUMBIA						Pl													Uncommon, on rocks in the upper intertidal in fully sheltered to fully exposed habitats. Scagel 1957, p. 87. R. Phillips and Vadas 1967, p. 15. Scagel 1973, p. 134. Hawkes et al. 1979, p. 94.
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COLUMBIA RIVER						Pl													Uncommon, on shaded rocks in the upper intertidal where surf is active, and on wharf wall. Wynne 1969 a, p. 45. Sanborn and Doty 1947, p. 29. Markham and Celestino 1977, p. 259.
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CAPE ARAGO						Pl													Uncommon, in tufts on logs and rocks in the upper and mid intertidal, on the outer exposed coast, but also in quiet waters of Humboldt Bay. Dawson 1965 a, p. 16.
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CAPE MENDOCINO						Pl													Common, on rocks in the upper intertidal. Kjeldsen 1995, p. 25.
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POINT ARENA						Pl													Uncommon, on rocks in the upper intertidal. Wynne 1969 a, p. 45. Kjeldsen 1995, p. 25.
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SAN FRANCISCO						Pl													Uncommon, on rocks in upper intertidal. Wynne 1969 a, p. 45. Silva 1979, p. 335.
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