98 ERYTHEA. 



B. cyrtella (Acb., Nyl.) On Quercus and Juglans, S. M. 

 R. 



Buellia peircea (Flot., Koerb.) Tuckerm., var Montagncei, 

 Tuckerm. On quartz rock, S. B. R. 



B. stellulaia (Tayl.) Br. & Rostr. On rocks, S. M. R. 



Endocarpon hepaticum, Ach. On clay, S. M. R. 



The following are from Catalina Island. 

 Ramalina homalea, Acli. On rocks exposed to ocean spray. 

 R. Menziesii, Tuckerm. On shrubs. 

 R. intermedia, Del, On shrubs. Infertile. 

 R. calicaris (L. ) Fr,, var. farinacea, SohsBv. On twigs. 

 Infertile. 



SHORT ARTICLES. 



Tendril-Structures among the Alg^: — Many of the 

 algse, particularly the marine species, possess organs modi- 

 fied in such a way as to resemble very strikingly certain of 

 those possessed by the more familiar floweriug plants. The 

 Laminaria Sinclair-ii of our coast possesses a very distinct 

 creeping rhizome-like stem, sending up new leaves from time 

 to time. Many algae possess distinct organs very closely 

 resembling true leaves, arranged upon the stem in regular 

 order, and a certain number affix their branches and stems 

 by tendril-like organs both to themselves and to other plants 

 in a fashion closely resembling that adopted by various 

 climbing phanerogamic species. 



The writer's attention was called again and again to a habit 

 of this kind possessed by a species of Laurencia, apparently 

 L. virgata J. Ag., which he found growing in abundance 

 about San Pedro, Cal. L. virgata sends out fairly long, stout 

 branches abruptly curved at their tips, which coil about any 

 slender object within easy reach. As many as six and seven 

 turns were counted in some of these spiral attachments and 



