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 bent in the middle, but 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 purple. Calyx with bractlets longer 

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

 Widely distributed. Summer. 



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



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

 pinnately dissected ivith 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. POTENTII/LA, Cinquefoil, Five-finger 



Herbs (one species shrubby) with compound leaves, toothed 

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

 shaped or bell-shaped, 5-cleft and with 5 smaller bractlets. 

 Petals 5, yellow (rarely white). Akenes on the receptacle, 

 which is dry and smooth or hairy. 



a. P. Anseri'na L. SILVERY CINQUEFOIL. Stems prostrate, with 

 runners like a 'strawberry. Leaves pinnately compound with from 

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

 very white on the lower surface. Flowers yellow, nearly an inch 

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

 is common in wet places everywhere. 



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

 glandular hairs. Leaves pinnately compound with from 5 to 7 

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

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

 usually grows in rather shady places. Widely distributed. 



