UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



BOTANY 



Vol. 7, No. 12, pp. 427-436, plate 50 June 16, 1922 



LWmAWf 



NOTES ON PACIFIC COAST ALGAE 

 II. ON THE CALIFORNIAN "DELESSERIA QUERCIFOLIA" 



BY 



GAEL SKOTTSBERG 



During my visit to California in 1913 Professor W. A. Setchell 

 introduced me to a red alga called Delesseria (or Schizmieura) querci- 

 folia by American algologists and identified by them with a plant 

 described by Bory in Voyage sur "La Coquille, " Cryptogamie, p. 136, 

 table 18, fig. 1, from the shores of subantarctic America. However, 

 it appeared to me that it was different from this latter, which I had 

 collected at various occasions on the coasts of Tierra del Fuego and 

 the Falkland Islands, where it is one of the commoner species. When 

 preparing the paper on my collection of 1902 I compared my material 

 of Bory's species with a specimen from California in Herb. Stockholm, 

 and stated that the latter belongs to a different yet undescribed species 

 (see Kylin and Skottsberg, "Zur Kenntnis der subantarktischen und 

 antarktischen Meeresalgen II," p. 94, Wiss. Ergebn. der schwed. Siid- 

 polar-Exp., IV:15, 1919). 



In order to make a more careful comparison between the two species, 

 I asked Professor Setchell for some material from California, and he 

 most willingly sent me a good set of specimens with all kinds of repro- 

 ductive bodies, for which I give him my best thanks. As all the 

 material is dry, it has not been possible to enter into histological details 

 regarding the formation of spermatia, cystocarps, or tetraspores, but 

 this does not, I dare say, prevent us from arriving at a safe conclusion 

 as to the systematic position. 



Both species agree in most characters and are nearly related 

 to each other, but well separated from other species. In both the 

 frond consists of an oblong, short, stipitate lamina of ordinary size, 

 with more or less sinuate margins, monostromatic except for the costa 

 and nerves; as usual, the parts where tetraspores, etc., are formed 



