Ectocarpus commensalis Setchell et Gardner

intercalary and pedicellate plurangia, rhizoidal holdfast

Synonyms:

Ectocarpus siliculosus var. parvus Saunders, E. confervoides f. parvus (Saunders) Setchell et Gardner, E. eramosus Setchell et Gardner, E. mesogloiae Setchell et Gardner, E. dimorphus Silva, E. parvus (Saunders) Hollenberg, E. confervoides f. variabilis Saunders, E. variabilis (Saunders) Smith

Illustrations:

Abbott and Hollenberg 1976, p. 128, fig. 89 (plurilocular plant and plurilocular detail); Apt et al. 1988, p. 58, fig. 15 (photomicrograph: habit, plant with plurilocular sporangia); Hollenberg and Abbott 1968, p. 1236, fig. 2 (plurilocular plant, as E. confervoides var. pygmaeus); Saunders 1898, pl. 15, figs. 5–9 (plurilocular and unilocular plants, as E. confervoides var. pygmaeus)

Pacific Coast Distribution:

Shumagin Is., Alaska (Scagel 1957, p. 71, as E. pygmaeus) to Punta Descanso, Baja Calif. (Dawson 1945f, p. 64, as E. confervoides f. pygmaeus); Channel Is., Calif. (Santa Cruz I.: Apt et al. 1988, p. 41); Laguna Juluapan, Colima, México (Mateo Cid and Mendoza González 1991, p. 23); Paredón, Chiapas (Mendoza González and Mateo Cid 1996: 69)

Taxonomy:

H. Kim and Lee 1992a; Hollenberg 1971b, p. 283

Life History:

uninvestigated, but presumably alternation of isomorphic phases

Biology/Ecology:

Devinny 1978, p. 358; Emerson and Zedler 1978, p. 317