Collinsiella tuberculata Setchell et Gardner

Illustrations:

Abbott and Hollenberg 1976, p. 119, fig. 81 (habit); Scagel 1960, pl. 1, 7 (photos: habit), fig. 2 (photo: surface view, gametangia), fig. 3 (photo: gametes), figs. 4, 5 (photos: optical section, development of gametangia), fig. 6 (photo: optical section, vegetative part of thallus), pl. 2, figs. 8–13, pl. 3, figs. 14–16 (photos: development of Enteromorpha stage in culture), figs. 19–31 (gamete production and zygote germination in Enteromorpha stage), figs. 32–48 (zoospore production and recycling of Enteromorpha stage); Scagel 1966, pl. 12, fig. A (habit), fig. B (gametangia), fig. C (surface view), fig. D (gamete), fig. E (squashed preparation showing mucilaginous sheath); Setchell and Gardner 1903, pl. 17, fig. 1 (habit), fig. 2 (vertical section of plant), fig. 3 (branching detail), fig. 4 (tangential section showing cell division planes), figs. 5–7 (details, terminal cell)

Pacific Coast Distribution:

Klokachef I., near Sitka, Alaska (G. Hansen et al. 1982, p. 116) to Pacific Grove, Monterey Peninsula, Calif. (Smith 1944, p. 31)

Taxonomy:

(see: Notes, p. 000)

Life History:

globose gelatinous thallus producing biflagellate gametes, zygote germinating immediately to produce a tubular thallus similar to Enteromorpha, which recycles the tubular thallus by means of quadriflagellate zoospores (Scagel 1960)

Biology/Ecology:

Dethier 1984, p. 106; Dethier 1982, p. 57