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Ectocarpus acutus Setchell et Gardner

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drawing of Ectocarpus acutus
habit of plurilocular plant and chloroplast detail
Note:
Ectocarpus acutus is considered conspecific with E. fasciculatus by H. Kim and Lee (1992a) Display references
Synonyms:
Ectocarpus acutus var. haplogloiae Doty
Illustrations:
Abbott and Hollenberg 1976, p. 125, fig. 83 (plurilocular plant); Doty 1947, pl. 8, fig. a (epiphytic habit); Saunders 1898, pl. 21, fig. 3, 4 (plurilocular plants); Setchell and Gardner 1922d, pl. 48, fig. 36 (habit), fig. 37 (plurilocular organ variation), fig. 38 (chloroplast morphology), fig. 39 (detail of branching), pl. 49, fig. 41 (plurilocular organs) Display references
Pacific Coast Distribution:
Bamfield, Vancouver I., British Columbia (Scagel 1973, p. 133) to Monterey Peninsula, Calif. (Smith 1944, p. 81); Lion Rock, near Diablo Cove, San Luis Obispo Co., Calif. (Sparling 1977, p. 33); San Pedro, Los Angeles Co., Calif. (Abbott and Hollenberg 1976, p. 124) Display references
Life History:
uninvestigated, but presumably alternation of isomorphic phases. Plants exclusively plurangial in the north may recycle directly. Unilocular organs seen for first time (in UC)
Phenology:
this annual species appears sooner in the south than the north
Biology/Ecology:
Devinny and Kirkwood 1974, p. 102 Display references
Ultrastructure:
Bailey and Bisalputra 1969 Display references

Pl=plurilocular; U=unilocular; S=sterile
J F M A M J J A S O N D
BRITISH
COLUMBIA
Pl        xx             Rare, epiphytic on Desmarestia and other large brown algae and Haplogloia in tidepools and low intertidal in fully sheltered habitats. Scagel 1957, p. 67. Scagel 1973, p. 133. Display references
U                        
S            xx        
COLUMBIA
RIVER
Pl          xx           Rare, epiphytic on kelps, Haplogloia, and Zostera, in tidepools and low intertidal. Doty 1947, pp. 31, 32. Sanborn and Doty 1947, p. 27. Display references
U                        
S          xx          
CAPE
ARAGO
Pl        xxx           Rare, on Desmarestia, Laminaria, and Haplogloia throughout the tidal range and subtidal. Dawson 1965a, p. 11. Display references
U                        
S            x          
CAPE
MENDOCINO
Pl      xxxx           Rare, on Desmarestia and Laminaria, in pools, the low intertidal and subtidal. Kjeldsen 1995, p. 19. Display references
U                        
S                        
POINT
ARENA
Pl          xx           Rare, on Desmarestia, Egregia, and Laminaria in pools, the low intertidal and the subtidal. Kjeldsen 1995, p. 19. Display references
U                        
S    x  x  x          
SAN
FRANCISCO
Pl          xx           Rare, epiphytic on the leaf tips of Desmarestia, especially D. ligulata [as D. herbacea], in feathery tufts to 7 cm. long, and on Haplogloia in the low intertidal; subtidal in Macrocystis beds. Smith 1944, p. 80. Devinny and Kirkwood 1974, p. 102. Silva 1979, p. 332. Display references
U          x            
S                        

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Page dated: Mon Feb 13 21:24:26 2006
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