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Acrosiphonia spinescens (Kützing) Kjellman (GAMETOPHYTE)

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Synonyms:
Cladophora spinescens Kützing, Spongomorpha spinescens Kützing
Illustrations:
Doty 1947, pl. 5, fig. 1 (branching pattern), fig. 5 (rhizoid), fig. 6 (habit); Kylin 1949, p. 61, fig. 60 (branching pattern and cellular detail); Scagel 1966, pl. 41, fig. E (branching pattern), fig. F (rhizoid), pl. 42, figs. A (habit), figs. B, E–H (branching details), fig. C (rhizoidal filament), fig. D (apex of branch), fig. I (chloroplast detail) Display references
Pacific Coast Distribution:
Attu I., Aleutian Is., Alaska (Miller 4029 in UC) to Cape Arago, Coos Co., Oregon (Doty 1947, p. 25); Humboldt Co., Calif. (HSC 08274, HSC 088955) Display references
Taxonomy:
Scagel 1966, p. 100; Setchell and Gardner 1920b, p. 229 Display references
Life History and Morphology:
not known with certainty for Pacific coast populations, but probably an alternation of free-living bisexual filamentous gametophytes with a unicellular sporophytes (Chlorochytrium inclusum Kjellman) endophytic in Schizymenia pacifica and other foliose red algae, with biflagellate gametes and quadriflagellate zoospores (Chihara 1969b); in Europe, a similar alternation but with sporophyte identified as Codiolum petrocelidis Kuckuck, endophytic in petrocelis-stage (Petrocelis cruenta J. Agardh) of Mastocarpus stellatus (Stackhouse) Guiry (Jónsson 1970; Jónsson 1962; Jónsson 1959; Jónsson 1958; Jónsson 1957) Display references
Biology/Ecology:
R. Lee 1965b, p. 111; Widdowson 1965b, p. 1427 Display references
Ultrastructure:
Hudson and Waaland 1974 Display references
 
J F M A M J J A S O N D
BRITISH
COLUMBIA
Repr  xxxxxxxxx     Common, epiphyte on other algae in moderately sheltered to fully exposed habitats throughout the intertidal. Scagel 1957, p. 58. Scagel 1966, p. 100. Scagel 1973, p. 131. Hawkes et al. 1979, p. 90. Display references
Ster    xxx              
                       
COLUMBIA
RIVER
Repr        xxx           Uncommon, on rocks in the mid intertidal. Doty 1947, p. 25. Sanborn and Doty 1947, p. 25. Markham and Celestino 1977, p. 257. Display references
Ster    x    xxx        
                       
CAPE
ARAGO
Repr                         Uncommon, on rocks (HSC 08274, HSC 08955).
Ster      xx  x          
                       
CAPE
MENDOCINO
Repr                        
Ster                        
                       
POINT
ARENA
Repr                        
Ster                        
                       
SAN
FRANCISCO
Repr                        
Ster                        
                       

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Page dated: Mon Feb 13 21:24:48 2006
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