Benthic Algae — Dawson 
375 
Percursaria per curs a ( C. Agardh ) Rcsenvinge 
Scagel, 1957 
Amaknak I., Alaska, to San Francisco Bay, 
Calif. 
order SCHIZOGONIALES 
fam. PRASIOLACEAE 
Scbizogonium murale f. uniseriatum Jao 
Scagel, 1957 
Dinner Point, Wash. 
Prasiola borealis Reed 
Setchell & Gardner, 1920 
Unalaska, Kodiak, and Baranof islands, Alaska 
Prasiola calophylla (Carmichael) Meneghini 
Scagel, 1957 
Whidbey I, Wash. 
Prasiola delicatula Setchell & Gardner 
Setchell & Gardner, 1920 
Sitka, Alaska 
Prasiola linearis Jao 
Scagel, 1957 
Argyle Lagoon, Wash. 
Prasiola meridionalis Setchell & Gardner 
Scagel, 1957; Silva, 1957 
Friday Harbor, Wash., to Carmel, Calif.; Santa 
Cruz I., Calif. 
Rosenvingiella constrict a (Setchell & Gardner) 
Silva 
Silva, 1957; Scagel, 1957 
Friday Harbor, Wash.; Tomales Point; Mon- 
terey; Santa Cruz I., Calif. 
Rosenvingiella polyrhiza (Rosenvinge) Silva 
Silva, 1957 
Amaknak I., Alaska 
order CHLOROCOCCALES 
fam. CHLOROCOCCACEAE 
Chlorochytrium inclusum Kjellman 
Scagel, 1957 
Sitka, Alaska, to Camel, Calif. 
Chlorochytrium porphyrae Setchell & Gardner 
Scagel, 1957 
Cape Flattery, Wash.; San Francisco; Monte- 
rey Peninsula, Calif. 
Chlorochytrium schmitzii Rosenvinge 
Setchell & Gardner, 1920 
Kodiak I., Alaska 
Codiolum penicilliforme (Roth) Silva 
Scagel, 1957 (as Codiolum gregarium) ; Silva, 
1957<2 (as the sporophyte generation of 
Urospora penicilliformis ) 
Southern British Columbia to northern Wash. 
Codiolum petrocelidis Kuckuck 
Scagel, 1957; Fan, 1959 (Fan, and also Hol- 
lenberg, 1958, indicate this as the sporo- 
phyte generation of Spongomorpha coalita) 
Northern Wash, to Monterey, Calif. 
Codiolum pusillum f. sub sessile Jao 
Scagel, 1957 
Brown I., Wash. 
fam. GOMONTIACEAE 
Gomontia polyrhiza ( Lagerheim ) Bornet & Fla- 
hault 
Scagel, 1957 
Neah Bay, Wash., to Monterey, Calif. 
order CLADOPHORALES 
fam. CLADOPHORACEAE 
Rhizoclonium eras sip ellitum var. robustum G. 
S. West 
Taylor, 1945 
Galapagos Arch. 
Rhizoclonium implexum (Dillwyn) Kiitzing 
Taylor, 1945 (as R. riparium var. implexum) \ 
Scagel, 1957 
St. Michael I., Alaska, to Carmel, Calif.; Gala- 
pagos Arch. 
Rhizoclonium kerneri Stockmayer 
Dawson, 1959; Scagel, 1957 
Victoria, British Columbia 
