SAXIFRAGACE^. QSAXIFRAGE FAMILY.) 97 



* * Calyx-tube saucer-shaped, expanding immediateli/ above the ovary ; peduncle^ 

 racemoseli/ 5 to 15-Jhwered : anthers very short, pointless: berry small and 

 currant-like, beset with some scattered gland-tipped bristles. 



6. R. lacustre, Poir. Youug stems clothed with bristly prickles, and 

 with weak thorns : leaves heart-shaped, 3 to 5-parted, with the lobes deeply 

 cut. — From California and the Rocky Mountains to the X. Atlantic Slates 

 aud Labrador. 



Var. parvulum, Gray. Smaller and nearly glabrous. — The commoner 

 western form. 

 § 2. Thornless and prickless : leaves plaited in the bud : berry unarmed {except 



in No. 7). — Currant. 

 * Calyx dilated immediately above the ovary, rotate or saucer-shaped, 5-parted. 



7. R. prostratum, L'Her. Stems reclined : leaves deeply heart-shaped, 

 5 to 7-lobed, smooth ; the lobes ovate, acute, doubly serrate : racemes erect, 

 slender, flowers greenish : pedicels and the pale red fruit glandular bristly. — 

 From Colorado northward throughout British America, and in the Atlantic 

 States. 



8. R. Hudsonianum, Richards. Resembles the last, but t\\Q flowers are 

 while and crowded in the erect raceme, and the berry is darker and smooth. — Tiie 

 R. bracteosiim of King's aud Haydeu's Reports, not of Douglas. Montana, 

 "Wyoming, and thence through British America to Hudson Bay. 



9. R. cereum, Dougl. Minutely pubescent, usually resinous dotted and 

 more or less glutinous, sometimes glabrous : leaves rounded or reniform, ob- 

 scurely or more decidedly 3-lobed, crenately toothed or incised : racemes 

 drooping: pedicels hardly any or shorter than the bract: calyx waxy-ichite, 

 sometimes greenish or pinkish : berry reddish, sweetish. — From New Mexico 

 to ^Yashingtou and the Dakotas. 



Var. pedicellare, Gray. Pedicels slender and longer than the bract. — 

 Montana. 

 * * Calyx prolonged above the ovary into a campanulate or cylindrical tube : 



fruit and foliage more or less glandular: bracts conspicuous. 



-t- Flowers dull white or greenish, or sometimes purplish-tinged : racemes somewhat 



corymb-like and few-flowered : berry blacky smooth. 



10. R. viscosissimum, Pursh. Pubescent and viscid-glandular : leaves 

 cordate-rounded : racemes ascending ; bracts rather shorter than the jtedicels. — 

 Idaho and Montana ; also in California. 



11. R. floridum, L. Leaves sprinkled ivith resinous r/r»/s, slightly heart- 

 shaped, sharply 3 to 5-lobed : racemes drooping, downy : bracts longer than the 

 pedicels. — On the Platte in Colorado, and common in the Atlantic States. 



-»- -t- Flowers rose-red, or iHiri/ing to white : 7'acemes drooping, many-fowcred : 

 berry blackish, somewhat hispid-e/landular, tough and not juicy. 



12. R. sanguineum, Pursh. Two to twelve feet high, varying from 

 nearly glabrous to tomento.se-canescent, either almost glandlet^s or glandular: 

 leaves rounded-cordate. 



Var. variegatum, Watson. Low, nearly glal)rous : rai-omo short ami 

 dense, ascending, barely glandular : calyx rose-color: petals white. — /i. W'olji, 

 Rothrock. Mountains of Colorado; also in California. 



7 



