LEGUMINOSA 281 



11. LUPINUS SERICEUS, Pursh. 



Hab. Eastern slope of the Cascade Mountains. — Our specimens 

 belong to a low subalpine form, and wholly resemble a Lupinus col- 

 lected in Western Utah, in Beckwith's Expedition. 



12. Lupinus littoralis, Dougl. 



Hab. Near Gray's Harbor, Washington Territory. — The solitary 

 specimen is in fruit. The pods are 10-13-seeded. 



13. Lupinus arboreus, Sims. 



L. macrocarpus, Hook. & Am. Bot. Beech, p. 329. 



Hab. Around the Bay of San Francisco; common in sandy soils. — 

 We have united the two shrubby yellow-flowered species of Cali- 

 fornia, as there is little to distinguish them except the degree of the 

 pubescence. Dr. Pickering, in his notes, states that the plant has a 

 spreading top, and often branches from the base. The stems are 3-6 

 feet long, and the woody trunk is sometimes 6 inches in diameter. 



14. Lupinus albifrons, Benih. 



Hab. Klamath River, Northern California, and southward to San 

 Francisco. 



