376 APPENDIX 



Parosela (formerly Dalea) schottii. A large, rather thorny bush, 

 up to 6 feet high. Leaves very narrow, dark bright green: flow- 

 ers resembling pea-blossoms, dark brilliant blue. Blooms in 

 mid-spring. 



Parosela (formerly Dalea) spinosa. Smoke-tree, Indigo-bush. A 

 small tree, up to 15 feet high, common in washes. Practically 

 leafless, the tree is a mass of whitish spiny twigs. Flowers small 

 but very abundant, resembling pea-blossoms, dark brilliant 

 blue. Blooms in early summer. 



Pectis papposa. Chinch weed. A low, small, rounded plant, viv- 

 idly green, with bright yellow flowers. It has a strong, rather 

 unpleasant smell. Blooms throughout summer. 



Perityle emoryi. A small plant found growing among rocks. 

 Flowers white, daisy-like. Blooms in mid-spring. 



Petalonyx thurberi. Sandpaper plant. A low, rounded, whitish 

 bush with a peculiar roughness to the touch. Leaves small, 

 light-green, scaly: flowers profuse, light-yellowish green. 

 Blooms in late spring. 



Phacelia campanularia. Canterbury bell. A small, usually single- 

 stemmed plant, with roundish, rather hairy leaves, and large, 

 deep-purple, bell-shaped flowers. Found (on the desert) only in 

 canons or near water. Blooms in mid-spring. 



Phacelia sp. Wild heliotrope: Span., Vervenia. A straggling, soft- 

 stemmed, rather hairy plant, up to 4 feet high, with small, 

 compound leaves and profuse, heliotrope-blue flowers in curl- 

 ing clusters. Blooms early to late spring. 



Philibertia linearis. Twining milkweed. A strong creeper found on 

 willows or other strong supporting plants, growing up to 6 or 8 

 feet high. Leaves few and grayish: flowers pale lavender, in a 

 close rosette. Blooms in mid-spring. 



Phoradendron calif ornicum. Mistletoe. A parasite very common 

 on the mesquit and other leguminous desert trees. It is leafless, 

 but has numerous small pink or white berries. 



Phragmites communis. Span., Carrizo. A reed-like grass or cane, 

 up to 10 feet high, with long, narrow leaves, found in damp 

 places on the open desert. 



Pluchea sericea. Arrowweed: Span., Cachanilla. A straight-grow- 

 ing, cane-like plant, up to 10 feet high, abundant in damp 

 places both in cafions and on open desert. Leaves gray, narrow, 

 willow-shaped: flowers small, clustered, dull pinkish purple. 

 Blooms in midsummer. 



Prosopis glandulosa. Mesquit: Span., Mezquite. A wide-branch- 



