DICOTYLEDONOUS PLANTS 85 



c. G. rivale L. Somewhat similar to the preceding in habit of 

 growth. Calyx brownish purple. Petals purplish, broad, with a 

 short claw. Style hent in the middle, hut the upper part feathery. In 

 the mountains. Summer. 



d. G. triflo'rum Pursh (G. cilia'tum). About a foot high. Leaves all 

 radical, except for a few bract-like leaves on the scapes, pinnate, 

 with leaflets crowded and irregular in size. Flowers usually 3, on 

 long peduncles, large, reddish pm-ple. Calyx with bractlets longer 

 than its lobes, equaling the petals. Styles straight, long, and feathery. 

 Widelv distributed. Summer. 



Vm. CHAM^BA'TIA, Mountain Misery, Tarweed 



Low, evergreen, glandular-aromatic shrub. Leaves tri- 

 pinnately dissected with the ultimate segments minute; stipules 

 small, linear, entire. Flowers about as large as a dime, in 

 terminal cymes. Calyx with top-shaped tube and 5-lobed 

 border. Petals white, 5, obovate. Stamens many. Pistil 

 one becoming a large akene. 



C. foliolo'sa Benth. This is the only species. It covers the 

 ground under the pines in the Sierra Nevada mountains. Its fern- 

 like foliage, strong odor, and abundant viscidity cause it to be well 

 known. 



IX. POTENTIL'LA, Cinquefoil, Five-finger 



Herbs (one species shrubby) with compound leaves, toothed 

 leaflets, and stipules attached to the petiole. Calyx saucer- 

 shajjecl or hell-shapjed, 5-cleft and with 5 smaller bractlets. 

 Petals 5, yellow (rarely white). Akenes on the recei^tacle, 

 tvhich is dry and smooth or hairy. 



a. P. Anseri'na L. Silvery Cinquefoil. Stems j)rostrate, with 

 runners like a straicherry . Leaves pinnately compound with from 

 7 to 21 leaflets (smaller ones interposed), sharply serrate and sil- 

 very white on the lower sm-face. Flowers yellow, nearly an inch 

 in diameter, petals falling easily. Receptacle very woolly. This 

 is common in wet places every^vhere. 



h. P. glandulo'sa Lindl. Erect, a foot or two high, covered with 

 glandular hairs. Leaves pinnately compound witli from 5 to 7 

 leaflets. Flowers in cymes that become open and spreading in fruit. 

 Petals yellow or yellowish white. Stamens 25 in one row. This 

 usually grows in rather shady places. Widely distributed. 



