250 SKA JifOSSBS. 



each other quite regubrly, on both si 'f the 



plant. 



This species is a much more robust i)hni than 

 cither of the other California Ptilota, thicker and 

 denser, every way in appearance. That fact will com 

 monly sen'e to distinguish it from them. But then- 

 are other ixjinis which help the discrim ». viz. : 

 the ultimate umf*le j>innulc of this s; is &.i' 

 shaped, arched or incurved, and toothed on the outer 

 edge only; while theirs is rcLtively smaller, sii 

 slenderer, more club-shajjctl, and in Pt. /n/ 

 not toothed, while in Pt. aspUnoiii »s commonly 

 toothed on Iwih sides. 



ll gro\»-s in deep water. Mr. ClcvcLind gets it 

 from January to April, not very common .nt San 

 Diego. Dr. Anderso ris it not very common, 



on the iKrach, at SanU Crux, all the year round. Mr. 

 Bmglum says it is rare at Santa Harl^ara ; she : 

 it, in February, washed ashore from deep water. 



PnUOTA IIYPNOIDFS, HaRV. 



I have plants of this species quite i».> feci 1' ' - 

 It greatly resembles Pt. dcnsa in its general hau.i 

 of growth. It has a prominent leading stem, flattened, 

 branching irregubily along either edge, with long, 

 widely spreading branches. These also are beset by 



