74 University of California Puhlications in Botany [Vol.8 



2. LjTigbya epiphytica Hieron. 



Filaments adhering firmly to the surface of other filamentous 

 algae, often regularly, spirally twisted around them, commonly having 

 the ends free ; triehomes aeruginous ; cells 1-1. 5/u, diam., 2/x long with 

 non-granular protoplasts; sheath \Qvy thin, hj-aline; terminal cell 

 not attenuate and neither capitate nor calj^ptrate. 



Growing on Lynghya confervo-ides Ag. in tide pools along high-tide 

 level. Cannel Bay, Monterey Count}', California. 



Hieronymus, in Kirchner, in Engler and Prantl, Natiirl. Pflanzen- 

 fam., 1898, p. 67 (nomen nudum) ; Lemmermann, Plankton, schwed. 

 Gewasser., 1903, p. 103, pi. 1, fig. 10; Collins, Holden and Setchell, 

 Phyc. Bor.-Amer. (Exsicc), no. 2206. 



This is one of the most curious members of the genus, growing 

 tightly coiled about other filamentous algae, first found by Hieronj^- 

 mus at Berlin growing on Oedogonium and Tolypothrix, and later by 

 Lemmermann who had it from a garden pond in Stromsberg in 

 Sweden. It is also given as occurring in a lagoon on Chatham Island. 

 It is curious to find it so far away from its type locality, but our 

 plant seems to fit the description and figure most exactly. 



3. Lyngbya Willei S. and G. 



Filaments epiphytic on larger algae, either attached at one end 

 with the other end free or attached in the middle with both ends free, 

 solitary or aggregated into small caespitose masses; sheath very deli- 

 cate, hyaline, adhering closely; triehomes pale blue-green or grayish 

 green, torulose, 1.5-2yu, diam. ; cells quadrate or one-half the diameter 

 long ; apices not attenuate and neither capitate nor calyptrate ; ter- 

 minal cell wall convex, not thickened ; protoplasm homogeneous. 



Growing on Rhizoclonium riparitim var. polyrhizum Rosenv. Near 

 the mouth of Tomales Bay, Marin County, California. August, 1916. 



Setchell and Gardner, in Gardner, New Pae. Coast Alg. Ill, 1918a, 

 p. 468. Lynghya epiphytica Wille, Algol Notizen XXII-XXIV, 1913, 

 pp. 22-25, pi. 1, figs. 14-17 (not Hieronjonus). 



The type, Lynghya epiphytica Wille, was discovered on the coast 

 of Norway at Trondhjem, growing on Rhizoclonium hieroglyphicum 

 (Ag.) Kuetz. "What seems to be exactly the same plant has been 

 detected on the coast of California growing on Rhizoclonium riparium 

 var. polyrhizum Rosenv. The latter species was distributed under 



