210 : RI BESACE. : RIBES. 
* * Calyx-tube campanulate to cylindrical: peduncles 1-4-flowered. 
+ Anthers oval or didymous, very obtuse and pointless: 
++ Tube of the calyx above the ovary very short. 
R. velutinum Greene Bull. Cal. Acad.i, 85. Stout and rigid, 2-6 feet 
high, with strongly recurved branches, these not prickly ; subaxillary spines 
solitary: leaves orbicular, palmately 3-5-cleft, the lobes crenately 3-toothed, 
6-8 lines in diameter, densely velyety-tomentose to nearly glabrous: racemes 
short, 2-3-flowered, the orbicular bracts not half as long as the pedicels; 
calyx cylindrical, its lanceolate lobes twice longer than the tube; petals 
oblong, shorter than the calyx-lobes: stamens shorter than the petals; 
styles glahrous, equalling the stamens; ovary and fruit velvety-pubescent. 
On dry hillsides at the southern base of the Siskiyou Mountains, 
R. montanum. Stems slender, creeping, 3-4 feet long: subaxillary 
spines 3, unequal: leaves round to oblong, less than an inch in diameter, 
slightly cordate or truncate, deeply 3-lobed, the lobes doubly toothed, pu- 
bescent but not glandular: peduncles usually one-flowered, bracts con- . 
spicuous, longer than the pedicels: calyx pubescent, its linear-oblong 
lobes 2 lines long, longer than the cylindraceous tube; petals narrowly 
oblong, a line long: stamens longer than the petals, anthers broadly ob- 
jong; style glabrous, entire or nearly so; ovary and fruit spinose. In the 
forests of the Siskiyou Mountains near the summit. 
R. ambiguum Watson Proc. Am. Acad. xviii, 198. Stems erect or 
ascending, 4-6 feet high: leaves roundish, 1-2 inches in diameter, villous 
and glandular, 5-lobed, the lobes crenately toothed, peduncle 1-3-flowered, 
calyx 6 lines long, more or less villous, the ligulate lobes several times 
longer than the tube, ciliate equalling the linear petals; anthers small 
elliptical, ovary and fruit,densely spinose. Mt. Adams, Washington, to 
Northern California at high altitudes. 
++ 4+ Calyx-tube longer than the limb. 
R. cognatum Greene Pitt. iii, 115. Slender shrub 3-10 feet high: 
younger branches stiffly and densely setose-hispid, the 1-3 subaxillary 
spines short, not very stout: leaves and the long and slender petioles vil- 
lous pubescent: flowers 3-5, at the ends of long and slender pendulous 
peduncles: calyx salver-form, the long cylindric tube villous-pubescent, 
twice the length of the oblong segments, the whole white or pale flesh- 
color: peta!s spatulate-ebovate, truncate or retuse, not equalling the calyx- 
lobes: ovaries glabrous, fruit not seen. Along the Umatilla river, near 
Pendleton, Oregon. 
*+ a+ 4+ Flowers small, dull-colored, fruit smooth. 
R. gracile Michx. Fl. i, 111. Branches slender: subaxillary spines 1-3, 
leaves roundish, obtusely 3-lobed, crenately incised, entire at base, glab- 
rous: peduncles elongated, 1-3-flowcered; lobes of the calyx ligulate, 
twice or thrice longer than the short tube; stamens long exserted hairy, 
longer than the hairy style: fruit black smooth. Brit Columbia to Ore- 
gon and the S. E. States. 
R. oxyacanthoides L. Sp. 201. Stems sometimes clothed with 
bristly prickles; subaxillary spines 1-3, often united at the base: leaves 
roundish, subcordate 5-lobed, pubescent or nearly glabrous, the lobes 
deeply toothed or crenate: peduncles very short 2-3-flowered; calyx tube 
cylindraceous, pubescent at the base within, the segments spreading, 
rather longer than the stamens, about twice the length of the obovate — 
petals; style cleft to the middle. hairy at base a little exceeding the sta- 
mens. Along streams, eastern Oregon to California and N. E, States. 
R. divaricatum Dougl. Trans. Hort. Soc, vii, 515. Stems 8-12 feet 
