144 KEY AND FLORA 



2-3 in. iorig ; upper sessile ; lower with short petioles. Flowers white 

 on a wand-like spike in dense interrupted close clusters. Calyx with 

 spine-tipped teeth nearly equaling the tube of the corolla. California 

 in the Sierra Nevada Mountains and hills of southern California. 



c. S. Chamisso'nis Benth. Stems erect, 2-6 ft. high, with stiff 

 hairs pointing downwards, on the angles. Leaves oblong-ovate, 

 3-5 in. long, crenate, wrinkled with the veins, whitish, \vith woolly 

 hairs on the lower surface, stiifer ones on the upper. Spike 6-12 in. 

 long. Calyx with spine-tipped teeth, densely hairy. Corolla pur- 

 plish, | in. long, hairy ; lower lip half as long. A very showy 

 species along the Californian coast from San Francisco northward. 



d. S. cilia'ta Dougl. Similar to the above, but with the leaves 

 greener and thinner ; 'corolla smaller, with the tube smooth. Along 

 the coast of Oregon and Washington. 



XI. TRICHOSTE'MA, Blue-curls, Camphor Weed 



Shrubs or herbs with flowers in dense, usually one-sided 

 axillary cymes, stamens and corolla blue or purple (rarely 

 white). Calyx bell-shaped, almost equally 5-cleft. Corolla 

 with a slender tube, 5-parted, the divisions forming in bud 

 a roundish ball which encloses the coiled stamens. Stamens 

 spirally coiled in the bud, conspicuously protruding from the open 

 corolla. In bloom in summer and fall. 



a. T. lanceola'tum Benth. CAMPHOR WEED. Annual herbs with 

 several branches, erect from the base. Leaves crowded, sessile, lance- 

 shaped. Cymes almost sessile, conspicuously one-sided, densely 

 flowered. Corolla and calyx somewhat hairy or woolly. This 

 plant is called camphor weed, because it has a strong odor some- 

 what like camphor, but very disagreeable, sometimes causing head- 

 ache. Widely distributed in the interior valleys. 



b. T. lax'um Gray. Annual, diffusely branched, soft, pubescent. 

 Leaves few, lanceolate-oblong, narrowed to an obtuse apex, 23 in. long, 

 on slender petioles. Cymes loosely flowered, on peduncles. Common 

 from middle to northern California, growing in dry places. 



c. T. lana'tum Benth. ROMERO. Shrubby, 3 or 4 ft. high. 

 Leaves numerous, narrowly linear, with margins turned under, 

 smooth and shiny above, white-woolly on the under surface. 

 Flowers in numerous cymes in a close terminal cluster, destitute of 

 bracts. The whole inflorescence, even to the calyx and corolla, is covered 

 with dense violet wool. The filaments extend an inch or more beyond 

 the corolla. Southern California, in rocky places. It is very con- 

 spicuous and beautiful. 



