126 SAXIFRAGACEAE. 



Calyx-tube saucer-shaped; racemes erect. R. petiolare. 



Calyx-tube cylindric or campanulate. 



Flowers yellow. R. aureum. 



Flowers white. 



Berries red or orange, glabrous or slightly 

 glandular; leaves resinous-dotted; raceme 

 drooping. R. cereum. 



Berries black, glandular; leaves viscid- 

 pubescent; inflorescence corymbose. R. viscosissimum. 



Ribes niveum Lindl. Erect shrubs, 1-3 m. high, armed with stout solitary 

 or triple dark spines but not prickly; leaves orbicular, truncate or cuneate at 

 base, the lobes bluntly 3-5-toothed, minutely ciliate, otherwise glabrous, 1-2 

 cm. long; petioles slender, longer than the leaves, the 3-5 flowers mostly 

 nodding; calyx-tube narrow, shorter than the linear white lobes; stamens much 

 exserted; filaments hairy; berries smooth, black, as large as a pea. Along 

 Snake River. 



Ribes purpusi Kochne. (Ribes inerme Rydb.) Low spreading shrubs, 

 about 1 m. high, unarmed or with feeble simple spines and a few prickles; 

 young shoots glabrous, the leaves somewhat pubcrulent or glabrous; leaves 

 orbicular, cordate, 5-lobecl, coarsely-toothed, 1-3 cm. long and broad; racemes 

 drooping, 2- or 3-flowered; calyx-tube bell-shaped, green, about 3 mm. long, 

 as long as the obtuse greenish or purplish reflexcd lobes; stamens exserted, 

 as long as the lobes; filaments nearly glabrous; berries small, black. Pullman, 

 along streams. 



Ribes cognatum Greene. Erect shrubs, 1-2 m. high, armed with pale 

 triple spines, sometimes very prickly as well; leaves and young shoots densely 

 puberulent, sometimes glandular; leaves orbicular, truncate or cordate at base, 

 3-5-lobed, incisely dentate, 2-3 cm. broad; petioles hairy, as long as or shorter 

 than the blades; racemes 2- or 3-flowered, drooping; bracts glandular; pedicels 

 very short; calyx-tube cylindrical, whitish, pubescent, 5-6 mm. long, larger 

 than the oblong spreading lobes. Along streams. 



Ribes irriguum Dougl. Very similar to R. cognatum, but the calyx-tube 

 broader, campanulate and glabrous, 3-4 mm. long; bark often white and the 

 spines few. Common in the Blue and Craig Mountains and about Spokane. 



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

 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 in the mountains. 



Ribes petiolare Dougl. Unarmed, glabrous or nearly so, about 1 m. high; 

 leaves round-cordate, 5-lobed, serrate, resinous-dotted beneath, the slender 

 petioles usually longer; racemes erect, 5-12 cm. long; pedicels longer than the 

 bracts; calyx whitish, the tube very short, the lobes erect, puberulent; ovary 

 resinous-dotted; berry black. On the high peaks of the Blue Mountains. 



Ribes aureum Pursh. Golden Currant. Unarmed, 1-2 m. high, usually 

 glabrous throughout; leaves thick, somewhat orbicular, cuneate or rounded 

 or truncate at base, deeply 3-lobed, the lobes coarsely 3-5-toothed or entire, 

 23 cm. broad; petioles slender, about as long as the blades; flowers bright 

 yellow, in dense ascending or spreading racemes; calyx-tube slender, cylindrical, 

 about 10 mm. long, the obtuse lobes spreading; petals short, oblong, frequently 

 dark-red; stamens short; berries black, red or golden. In the warmer valleys. 



Ribes cereum Dougl. About 1 m. high, with numerous short branches, 

 the young commonly resinous-dotted and glutinous; shoots and under sides 



