NO. 1 TAYLOR: PACIFIC MARINE ALGAE 121 



Setchell indicates that the "type" of S. pacificum Bory belongs to his 

 f. subdelicatulum (Grunow) Setchell (1937, p. 147), which appears to 

 the writer to create a nomenclatorial anomaly covered by Art. 29, rec. 18 

 of the 1935 International Rules of Botanical Nomenclature, so the form 

 name is not adopted here. The leaves in some of these, such as no. 34- 

 194B, are larger than described by him for S. pacificum. Farlow's record 

 ( 1902, p. 92) of S. cymosum Ag. from I. Wenman is based on a specimen 

 in the Stanford University herbarium annotated by Setchell as 5. pacifi- 

 cum f. subdelicatulum (Grun.) Setch. ; that from Tagus Cove, Isabela I. 

 he annotated in part as f. subdelicatulum and in part f. rigidiusculum 

 (Grun.) Setch. 



Ecuador: Archipielago de Colon, dredged at sta. 157 from 18-32 

 meters off Tagus Cove, I. Isabela, no. 34-194B, 13 Jan. 1934. Ibid., 

 dredged in 5.4-7.2 meters of water east of Wreck Bay, I. Cristobal, 

 Schmitt no. 41B-33, 30 Jan. 1933. 



f. congestum Setchell, prox. 



Setchell 1937b, p. 149, pi. 30, figs. 35-40, pi. 33, figs. 63, 64. 



These plants approached the type specimen, Howell no. 149, kindly 

 loaned by the California Academy of Sciences, but were looser in habit. 

 Examination of the several other sheets of material in the Howell collec- 

 tion determined by Setchell showed a wide variation in habit, as in density, 

 leaf size, and vesicle stalk characters. 



Ecuador: Archipielago de Colon, on rocks near low tide line, Pta. 

 Albemarle, I. Isabela, no. 34-103, 12 Jan. 1934. Ibid., south shore of 

 Banks Bay, no. 34-124, 13 Jan. 1934. 



f. rigidiusculum (Grunow) Setchell, ^ro^. 



Setchell 1937b, p. 148, pi. 30, fig. 34, pi. 33, fig. 62. 



The collections reported by Setchell are all of dense forms growing in 

 exposed situations. The writer finds the same characters of detail, that is, 

 firmer and smaller leaves more crowded, rarely with cilia, more dentate, 

 and vesicles with smooth pedicels, on plants to over 40 cm tall, with pan- 

 iculate habit. 



Ecuador : Archipielago de Colon, on rocks near tide level and float- 

 ing, Tagus Cove, I. Isabela, nos. 34-143, 34-149C, 13 Jan. 1934. Ibid., 

 I. San Salvador, Albatross Exped. no. 13?, Apr. 1888. 



