272 PHANEROGAMOUS PLANTS. 



7. Trifolium spinulosum, Dough in Hook. 



Hab. Puget Sound and Gray's Harbor, Washington Territory; also 

 near San Francisco, California. 



8. Trifolium pauciflorum, Nutt. 



Hab. Walla- Walla River, Oregon. — A smooth, slender species, 

 which we have seen elsewhere only in the collections of Douglas and 

 Nuttall. The heads are smaller than in T. microcephalum. Petals 

 combined with the stamineal column. 



9. Trifolium ctathiferum, Lindl. 



Hab. Damp ground on the Kooskooskee River, Rev. Mr. Spald- 

 ing. — This rare species, so beautifully illustrated in Hooker's Flora, 

 is seldom met with in collections. 



8. MELILOTUS, Tourn, 



1. Melilotus parviflora, Desf. 



Hab. California, in various parts: Although distinguished by Nut- 

 tall, under the name of M. occidentalism this is only the European M. 

 parviflora naturalized. 



9. HOSACKIA, Benth. 



1. Hosackia bicolor, Dougl. 



Hab. Puget Sound, and upper tributaries of the Columbia: abun- 

 dant in moist grounds. — Stems assurgent. Corolla yellow and white, 

 ornamental wings larger than the somewhat rostrate keel. 



