164 PITTONIA. 
often with here and there a bristly hair, more constricted, the 
Joints with similarly indefinite unevenness of surface. 
Tested by the sole character originally assigned it, this 
species could not be maintained; for its carpels are not 
always glabrous, while those of P. Californicus are some- 
times nearly so. But, by the two new characters here first 
indicated, the long, narrow outer filaments and the obviously 
torulose, or almost moniliform carpels, I think it may claim 
the rank of a species. The habitat also would lead us to look 
for morphological distinctions. The principal headlands of 
the Pacific Coast of North America, as already noted, com- 
monly mark the limits of seaboard species in various genera. 
Distinctively southern types in Eschscholtzia, in Platystemon 
and other genera outside of this family, appear to begin at 
Cape San Quentin, on Mexican territory, and find their 
absolute limits northward at or below Point Conception, 
above Santa Barbara. Between the cape last named and 
Point Pinos (Monterey) we have another set of seaboard 
species. Eschscholtzia Californica and Platystemon Californicus, 
the former originally from Monterey, the latter from San 
Francisco, are both apparently restricted to that hundred 
miles or more of coast-line between Point Pinos and the 
northern extremity of the San Francisco Peninsula; and 
many are the species in other genera which are unknown 
beyond just these limits, Other types appear first at Point 
Reyes above San Francisco, and are unknown beyond Cape 
Mendocino. Within these latter limits ranges, for example, 
Eschscholtzia cucullata, the homologue of E. Californica, which 
is limited, as I have said, to the coast between San Francisco 
and Monterey. These considerations must, I say, give weight 
to the rather few characters by which P. leiocarpus is recog- 
nizable. The plant is unknown on the territory of P. Cali- 
fornicus, as that is unknown much to the northward of 
Monterey. : 
