96 SAXIFPvAGACE^. (SAXIFRAGE FAMILY.) 



1. !P. rupicola, Eng. & Gray. Pubescent or glabrate, branches terete, 

 striate ; leaves deciduous, subsessile, oblong, very entire, 3-uerved at base • 

 flowers 1 to 3, terminal on the short branchlets, peduncled, white. — PI. Wright 

 i. 77. S. W. Colorado and southward. 



12. RIBES, L. Currant. Gooseberry. 



Calyx 5-lobed, often colored. Petals 5, small. Styles 2, distinct or united. 

 Berry crowned with the shrivelled remains of the calyx. — Low, sometimes 

 prickly, with palmately-lobed leaves, often clustered in the axils ; the small 

 flowers from the same clusters, or from separate lateral buds. 



§ 1. Mostlij tliorny under the fascicles, and sometimes scatter ed-pricHy or 

 bristly along the branches: leaves plaited in the bud : calyx mostly recurved or 

 rejiexed at flowering-time. — Gooseberry. 



* Calyx-tube campamdate to cylindraceous : peduncle 1 to 4-flowered. 

 4- Flowers yellow or yellowish : leaves seldom | inch in diameter : anthers oval- 

 oblong. 



1. R. leptanthum, Gray. INIuch branched and rigid, 1 to 4 feet high, with 

 comparatively large single or triple thorns : leaves roundish, 3 to 5-cleft, and 

 the lobes crenately -incised or toothed : peduncles very short, 1 to 2-flowered : 

 berry glabrous. — PI. Pendl. 53. New Mexico, Colorado, and in the Sierras. 



-1- -t- Flowers greenish, white, or dull purplish : leaves mostly an inch or two in 



diameter : anthers shorter, mostly didymous. 



++ Ovary and berry unarmed and glabrous : berry pleasant. 



2. R. divaricatum, Dougl., var. irriguum, Gray. Nearly glabrous or 

 soft-pubescent : stons 5 to 12 feet high, with widely spreading branches ; the 

 thorns single or triple : leaves nervose-veiny at base, 3 to 5-lobed, the lobes in- 

 cisely toothed : the 2 to 4-flowered peduncle and pedicels slender, drooping: calyx 

 livid purplish or greenish white : petals fan-shaped, white: berry dark purple. — 

 R. irriguum, Dougl. From Colorado and Idaho to Nevada and Oregon. 



3. R. oxyacanthoides, L. Mostly glabrous, 2 to 4 feet high ; thorns 

 single or triple, small : leaves usually deeply 5-lobed, the lobes incised and 

 coarsely toothed : the 2 to 3-floivered peduncles very short: calyx greenish-white 

 or flesh-colored : stamens and 2-cleft style scarcely longer than the bell-shaped 

 calyx: berry small, purple. — R. hirtellum, Michx. From Colorado north- 

 ward throughout Britisli America ; also in California and tlie N. Atlantic 

 States. 



4. R. rotundifolium, Michx. Leaves smooth or downy : peduncles slen- 

 der, 1 to Sfloivered : stamens and 2-parted style slender, longer than the narrow 

 cylindrical calyx : fruit smooth. — The Upper Missouri, and extending east- 

 ward to the Atlantic States. 



•M- ++ Berry armed ivith long prickles like a burr, or rarely smooth. 



5. R. Cynosbati, L. Spines small or obsolete : leaves pubescent : sta 

 mens and undivided style not longer than the broad calyx : berry large. — 

 Near the sources of the Platte, and thence through the N. Atlantic States to 

 Canada. 



