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from Setchell and Gardner 1920b
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Synonyms:
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Gayella constricta Setchell et Gardner
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Illustrations:
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Abbott and Hollenberg 1976, p. 89, fig. 44, left (habit, as Prasiola meridionalis); Bravo 1962, p. 19, figs. 1–3 (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–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–K (early stages in development of gametophytes from zygote), p. 105, fig. 4 (photos): A–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 1920b, pl. 12, fig. 5 (habit), figs. 6–8 (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)
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Pacific Coast Distribution:
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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 1920b, 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)
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Taxonomy:
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Hanic 1979; Bravo 1965
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Phylogeny:
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Sherwood et al. 2000
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Life History:
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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. 220–222).
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Biology:
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Hanic 1979; Bravo 1965; Widdowson 1965b, p. 1427
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Ultrastructure:
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O'Kelly et al. 1989
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