396 TJnivfrsitii of Calif oniia Puh! leaf ions in Botany [Vol. 10 



Plocamiocolax pulvinata, sp. nov. 



Frondibiis piilvinatis, usque ad 4 mm. latis, albidis aut albido- 

 luteis; ramis usquo ad 2.5 mm. loiifris. 0.25 mm. latis, sparse ramosis, 

 rectis et sinuosis: tetrasporaiijiriis in soris verrucosis, lateralibus, 

 botryoideo-ag:g:regatis ; cystocarpiis terminalibus aut lateralibus, 

 proeminentibus, carpostomiura ostendentibus. 



Parastic on Plocamium coccineum, Carrael Bay, California, May, 

 1915, N. L. Gardner, No. 2869. 



