CENTER FOR PHYCOLOGICAL DOCUMENTATION
DECEW'S GUIDE

Rosenvingiella constricta ( Setchell et Gardner ) Silva
	CONTENTS     FIGURES     ABOUT     INDEXES: Reds · Greens · Browns     KEYS: Browns

from Setchell and Gardner 1920 b Synonyms: Gayella constricta Setchell et Gardner Illustrations: Abbott and Hollenberg 1976, p. 89, fig. 44, left ( habit, as Prasiola meridionalis ); Bravo 1962, p. 19, figs. 1 & ndash; 3 ( development of plant ), p. 21, fig. 4 ( photo: mature plants in culture ); Hanic 1979, p. 73, fig. 5 ( photo: habit, plants in nature ), fig. 6 ( photo: plants in culture ); Kornmann and Sahling 1974, p. 101, fig. 1 ( photos ): A & ndash; C ( habit in nature ), D ( x-sections, monosiphonous and parenchymatous portions of plant ), E ( x-section, male sorus ), F ( x-section, female sorus ), p. 102, fig. 2 ( photos: habit in nature ), p. 104, fig. 3 ( photos ): A ( female gametes ), B ( male gametes ), C & ndash; K ( early stages in development of gametophytes from zygote ), p. 105, fig. 4 ( photos ): A & ndash; C ( further development of gametophytes ), D ( male gametophyte ), E ( female gametophyte ); Scagel 1966, pl. 13, fig. A ( habit ), figs. B, C, F ( surface views, different portions of plant, cellular detail ), figs. D, E ( x-sections, different portions of plant, cellular detail ); Setchell and Gardner 1920 b, pl. 12, fig. 5 ( habit ), figs. 6 & ndash; 8 ( development of rhizoids ), fig. 9 ( surface view, cellular detail ), fig. 10 ( x-section ); Smith 1944, pl. 2, fig. 8 ( habit ), fig. 9 ( surface view, cellular detail ) Pacific Coast Distribution: British Columbia ( Langara I ., Queen Charlotte Is.: Hawkes et al. 1979, p. 90; Barkley Sound, Vancouver I.: Garbary et al. 1985, p. 43; Porlier Pass, Galiano I.: Hanic 1979, p. 71; Friday Harbor, San Juan I ., Wash. ( Setchell and Gardner 1920 b, p. 281 ); Tomales Pt ., Marin Co ., Calif. ( Gardner 1917, p. 384 ); Farallon Is ., San Francisco Co ., Calif. ( Silva in UC ); Mussel Pt ., Monterey Peninsula, Calif. ( Smith 1944, p. 54 ) Taxonomy: Hanic 1979; Bravo 1965 Phylogeny: Sherwood et al. 2000 Life History: sexual reproduction not demonstrated in Pacific coast populations, plants recycling by means of aplanospores ( Hanic 1979 ); in Europe, unisexual gametophytes producing biflagellate male gametes and non-flagellate female gametes; zygotic meiosis with genotypic sex determination; asexual reproduction not demonstrated ( Kornmann and Sahling 1974 ). Note: Bravo ( 1962, 1965 ) interpreted the results of her culture studies as showing that Prasiola meridionalis and Rosenvingiella constricta are phases in the same life history. This equivocal matter was reviewed by Tanner ( 1981, pp. 220 & ndash; 222 ). Biology: Hanic 1979; Bravo 1965; Widdowson 1965 b, p. 1427 Ultrastructure: O ' Kelly et al. 1989

							J	F	M	A	M	J	J	A	S	O	N	D
BRITISH COLUMBIA						Repr													Locally abundant, in spray zone, just above the intertidal zone, on exposed rocks. Scagel 1957, p. 47. Scagel 1966, p. 69. Hawkes et al. 1979, p. 90. Garbary et al. 1985, p. 43.
						Ster
COLUMBIA RIVER						Repr
						Ster
CAPE ARAGO						Repr
						Ster
CAPE MENDOCINO						Repr
						Ster
POINT ARENA						Repr													Locally abundant, growing in depressions and crevices in rocks above high-tide level, kept moist by dashing salt spray. Setchell and Gardner 1920 b, p. 280.
						Ster
SAN FRANCISCO						Repr													Locally abundant, growing intermingled with P. meridionalis , but restricted to the lower portion of the Prasiola belt. Smith 1944, p. 54.
						Ster