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Misapplied Names:
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Scytosiphon attenuatus (Foslie) Doty
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Illustrations:
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Abbott and Hollenberg 1976, p. 199, fig. 161 (habit); Wynne 1969a, p. 37, fig. 9a (x-section, vegetative thallus), fig. 9b (x-section, thallus with plurilocular organs), figs. 9c–e (germlings in culture), pl. 18 (photos: field- collected thalli), pl. 19 (photos: origin of uprights from germlings in culture)
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Pacific Coast Distribution:
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Coos Head, Ore. (Doty 1947, p. 38) to Monterey Peninsula, Calif. (Wynne 1969a, p. 35); San Luis Obispo Co., Calif. (Montaña de Oro State Park: Wynne 1969a, p. 35; Shell Beach: Sparling 1977, p. 39); Point Conception, Santa Barbara Co., Calif. (Wynne 1969a, p. 35) to Punta San Isidro, Baja Calif. (R. Aguilar Rosas et al. 1984, p. 163); Channel Is., Calif. (San Miguel I.: Murray and Littler 1989, p. 67; Santa Rosa I.: Silva 3969 in UC [Santa Rosa I. specimens cited by Wynne 1969a, p. 35, were from Santa Cruz I.]; Santa Cruz I.: Apt et al. 1988, p. 42; San Nicolas I.: Caplan and Boolootian 1967, p. 209; San Clemente I.: Wynne 1969a, p. 35); Baja Calif.: Islas Los Coronados: Wynne 1969a, p. 35
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Taxonomy:
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Wynne 1969a
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Phylogeny:
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G. Cho et al. 2001
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Life History:
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apparent lack of sexual phase, with zoospores from plurilocular organs on tubular thalli germinating to produce prostrate filaments that coalesce to form discs, from which tubular thalli bearing plurilocular organs are produced (Wynne 1969a, p. 37; see also Loiseaux 1970a for the life history of a dwarf Scytosiphon from central Calif.)
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Biology/Ecology:
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Farrell 1988, p. 194; Sousa 1984, p. 1923; Murray and Littler 1978, p. 509; Littler and Murray 1977, p. 20; Caplan and Boolootian 1967, p. 209 (as S. attenuatus)
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