120 
VICTORIA MEMORIAL MUSEUM. BULLETIN NO. I 
P. tenuistriata Hooker & Harvey, 1844, p. 479, PL 
CLXXXIII, fig. 3; Setchell & Gardner, 1903, p. 327; P. B.-A., 
No. 1142, both as P. californica; Esqnimait, Harvey, as P. 
atrorubeseens. Victoria, Macoun. This form, considered by 
Harvey as identical with P. atrorubeseens of the Atlantic, was 
referred by Falkenberg to P. californica Harvey, but an exami- 
nation of the type in Herb. Harvey shows that the latter 
cannot be distinguished from Pterosiphonia bipinnata, while 
authentic material of P. tenuistriata agrees well with the plant 
in question, which has a range from Vancouver to Southern 
California. 
P. nigrescens (Huds.) Greville var. affinis (Moore) Harvey. 
P. B.-A., No, 596. Departure bay, Macoun. 
P. subulata (Duel.) J« G. Agardh. P. B.-A., No. 638, as 
P. senUculosa. Victoria, Qualieum, Macoun. This species 
seems to range from Vancouver to southern California; it is 
somewhat variable, the Vancouver form being stouter, and with 
uniformly shorter segments than the plant from Southern Cali- 
fornia distributed as P. B.-A., No. 638. Both forms are found 
in Europe. 1 
Laurencia pinnatifida (Gmel.) Lamouroux. Setchell & 
Gardner, 1903, p. 326; Harvey, 1853, p, 70; P. B.-A., No. 
543; Tilden, Centuries, No. 320. Victoria, Harvey; Port 
Renfrew, Butler & Polley; Ucluelet, Amphitrite point, Depart- 
ure bay, Macoun. 
Janceewskia verruciformis Solms. Setchell & Gardner, 
1903, p. 326; P. B.-A., No. 8S7. On Laurencia pinnatifida , 
Victoria, Macoim. Only one species of this genus has yet been 
reported on the Pacific coast. There is reason to believe that 
there are at least two others, but until the distinctions are 
clearly made out, the present name may be provisionally used. 2 
Pterosiphonia plumula (J. Ag.) Collins in P. B.-A., No. 
1789. Victoria, Macoun. A delicate plant with short, feathery 
fronds, the branches issuing from each segment of the rachis; 
in herbaria it has sometimes been labelled Polysipkonia dictyu- 
rus , but the latter is a true Polysipkonia. The Vancouver plants 
J The genua Polgsiphonia , ae now limited, seems to be rather poorly represented 
on the west coast of America, while such genera as Ptftosiphonia, Lophmiphonia 
ete., segregated from the old Polysipkonia , are better represented. 
s Chondria atropwrpwna is reported by Harvey from “Puca Strait”. The speci- 
men in Herb. Harvey is net in good condition, but is probably Cryptosiphonia tsoodii. 
