Myrionema strangulans Greville

unilocular organs from Setchell and Gardner 1925

Illustrations:

Abbott and Hollenberg 1976, p. 159, fig. 125 (unilocular plant); Setchell and Gardner 1925, pl. 35, fig. 12 (surface view habit), pl. 40, fig. 51 (unilocular plant)

Pacific Coast Distribution:

Alaska (Uyak Bay, Kodiak I., Gulf of Alaska: Setchell and Gardner 1903, p. 249); Sitka: Setchell and Gardner 1903, p. 249); Victoria, Vancouver I., British Columbia (Scagel 1957, p. 76); Washington (Whidbey I.; East Sound: Scagel 1957, p. 76); Monterey Peninsula, Calif. (Smith 1944, p. 107)

Taxonomy:

Loiseaux 1968

Life History:

In France, Myrionema plants with plurilocular organs released zooids which: 1) fused to either form a branched filamentous plant resembling the parent plant and bore both plurilocular and unilocular organs, or 2) formed a small disc which bore both plurilocular and unilocular organs. Zooids from the unilocular organs either fused and recycled the disc stage, or did not fuse formed a branched uniseriate plant which bore plurilocular organs. Isolates from Germany, started from plurilocular plants recycled directly via plurilocular organs. (Kornmann and Sahling 1983, p. 47; Loiseaux 1968; Loiseaux 1967a; Loiseaux 1967b)