1 86 SAXIFRAGACEAE. 



racemose, mostly terminating short and 1-2-leaved axillary- 

 shoots; calyx- tube adherent to the globose ovary and more or 

 less extended beyond it, 5-, rarely 4-cleft, commonly colored or 

 petal-like; petals 4 or 5, small, perigynous; stamens as many as 

 the petals and alternate with them; styles 2, more or less united; 

 ovary 1-celled; ovules few or numerous; berry globose, fleshy, 

 usually many-seeded. 



Stems usually armed with spines and frequently with prick- 

 les. 

 Peduncles with numerous flowers in a raceme; calyx tube 



saucer-shaped. R. lacustre. 



Peduncles 1-4-flowered; calyx tube campanulate or 

 cylindric. 

 Flowers about 2 cm. long, dark purple. R. lobbii. 



Flowers much smaller, greenish or purplish. R. divaricatum. 



Stems not thorny nor prickly. 



Calyx tube cylindric or campanulate. 



Flowers red; raceme many-flowered. R. sanguineum. 



Flowers white or greenish; inflorescence few-flowered. 

 Berries red or orange, glabrous or slightly gland- 

 ular; leaves resinous-dotted; inflorescence a 

 raceme. R. cereum. 



Berries black, glandular; leaves viscid-pubescent ; 

 inflorescence corymbose. R. viscosissimum. 



Calyx tube rotate. 



Berries red, smooth. R. ciliosum. 



Berries black, glandular. 



Racemes pendent. R. howellii. 



Racemes erect or ascending. 



Glands sessile. R. bracteosum. 



Glands stalked. R. laxiflorum. 



Ribes lacustre (Pers.) Poir. Stout, 1-2 m. high, armed with short 3-5- 

 branched spines and very numerous bristly prickles; leaves orbicular, cordate, 

 deeply 5-lobed, incisely dentate, minutely glandular, 2—4 cm. long; racemes 

 loose, drooping; flowers greenish or purplish, slender-petioled; calyx short, 

 saucer-shaped, the obtuse lobes spreading; stamens very short; berries nearly 

 black, bristly glandular. 



Moist woods, common. 



Ribes lobbii Gray. Stems 1-2 m. high, the branchlets not bristly; sub- 

 axillary spines 3, stout; leaves orbicular, cordate or subcordate at base, about 

 2 cm. broad, 3— 5-cleft, the lobes serrate, somewhat glandular-pubescent; 

 flowers solitary or in threes, drooping, 2 cm. long; calyx purple, campanu- 

 late, pubescent, shorter than the narrow spreading or reflexed segments; 

 petals wedge-shaped, obtuse, white; berries globose, 10-12 mm. in diameter, 

 warty-glandular. 



Vancouver Island to northern California, but occurring only locally. 



Ribes divaricatum Dougl. Shrub, 2-4 m. high; branchlets often with 

 scattered bristles; subaxillary spines 1-3, stout, mostly dark colored, often 

 deflexed; leaves orbicular, 3-5-lobed, incisely toothed, slightly pubescent 

 beneath, 2-3 cm. broad; flowers 1-4, in small corymbs; calyx pale green or its 

 lobes dark purplish, the tube campanulate, shorter than the spreading oblong 

 lobes; petals wedge-shaped, white, erect, half as long as the calyx lobes; style 

 villous; berries globose, black, 3-5 mm. in diameter. 



