468 University of California PuhUcations in Botany [Vol. 6 



0.8/A diam., with cylindrical cells longer than the diameter and with 

 conspicuous cross W'alls. 



P. hormoides has some resemblance to the j^oung filaments of a very 

 delicate species of Anahaena on account of the pronounced moniliform 

 filaments, but there is no indication of heterocysts or spores. 



Lyngbya Willei Setchell et Gardner nom. nov. 



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 ; trichomes pale blue-green or grayish 

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

 long ; apices not attenuate, capitate nor calyptrate ; terminal cell wall 

 convex, not thickened ; protoplasm homogeneous. 



Growing on RJiizoclonium riparium var. polyrJiizum Rosenv. Near 

 the month of Tomales Bav, Marin County, California. August, 1916. 

 No. 3440, Gardner. 



Lynghya epipliytica Wille, Algol. Notizen, XXII-XXIY, i)i Nyt 

 Magazin for Natur., vol. 51, part 1, 1913, pp. 22-25, pi. 1, figs. 14-17 

 (not Hieronymus, 1898, p. 67). 



The type, Lynghya epipliytica 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 by me 

 under no. 2238a of the Phycotheca Boreali-Americana of Collins, 

 Holden and Setchell. The epiphyte is rather sparsely represented on 

 our material of Rhizoclonium. The identification was made after the 

 distribution of the Rhizoclonium and hence is not known to be repre- 

 sented in all of the specimens of the distribution. 



The specific name, epiphytica. having already been occupied by 

 Hieronymus (1898, p. 67) to designate a very small unique species 

 coiling around the filaments of larger Myxophyceae, it becomes neces- 

 sary to rename the species of the Leihleinia type found later by Wille, 

 and the species is consequently dedicated to him. It may also be men- 

 tioned that very abundant, and apparently typical L. epiphytica 

 Hieron, has also been discovered on the central California coast, and 

 lias been distributed in Collins, Holden and Setchell, Phycotheca 

 Boreali-Americana (Exsicc.) no. 2206. 



