RIBES 



RIBES 



2957 



D. Calyx-tube about twice as long as 

 sepals; sepals revolute or 



spreading 1. odoratum 



DD. Calyx-tube !-!}& times as long 



as sepals 2. aureum 



cc. Color of fls. red or white: U>s. 



plaited in bud. 

 D. The fls. red or red and yellow, 



rarely white. 



E. Lrs. glabrous or nearly so 

 beneath: fls. pale yellow 



and red 3. Gordonianum 



EE. Lrs. white-tomentose beneath: 



fls. red, rarely white 4. sanguineum 



DD. The fls. white, pink, or greenish: 

 Irs. glabrous or pubescent and 

 green beneath. 

 E. Plants glandular -viscid: 



raceme short. 



r. Fr. black: calyx-tube cylin- 

 dric-campanulate: I vs. 



2-3 in. broad 5. viscosissi- 



FF. Fr. red: calyx-tube tubular: [mum 



Its. %-l% in. broad. 

 a. Bracts of raceme cune- 

 ate-obovate, toothed: 



fls. white or whitish 6. cereum 



GO. Bracts rhombic, usually 



acute: fls. pink 7. inebrians 



EE. Plant not glandular - viscid: 

 Irs. resinous-dotted beneath: 

 racemes pendulous; fls. 



whitish: fr. black 8 americanum 



BB. Fls. saucer-shaped or open-cam- 



panulate, greenish or whitish, 

 c. Lrs. resinous-dotted beneath. 

 D. Racemes nodding, short; fls. 

 broadly campanulate: Irs. 



3-o-lobed 9. nigrum 



DD. Racemes upright, to 8 in. long; 



fls. rotate: Irs. o-7-lobed 10. bracteosum 



cc. Lrs. not resinous-dotted. 

 D. Habit decumbent. 



E. Otary and fr. glandular: 



racemes erect 11. glandulosum 



EE. Orary and fr. glabrous: ra- 

 cemes nodding 12. triste 



DD. Habit upright. 



E. Racemes drooping, many-fld.; 

 fls. perfect: petiole 1 %-3 in. 

 long. 



F. Calyx-tube broadly cam- 

 panulate; fls. purple, 



pink, or reddish 13. petrseum 



FF. Calyx-tube saucer-shaped. 

 G. Stamens as long as 



sepals; sepals re flexed. 14. multiflorum 

 GG. Stamens shorter than 

 sepals; sepals spread- 

 ing. 



H. Disk of fl. with a big 

 narrow ring; anther- 

 cells separated by a 

 broad connectire: 

 Irs. cordate or sub- 

 cordate 15. vulgare 



HH. Disk of fl.. flat; anther- 

 cells contiguous: Irs. 

 usually truncate. ... 16. nibrum 

 EE. Racemes upright; fls. dioe- 

 cious, small, greenish: 

 petiole about 1 in. long or 

 less. 



r. Branches always unarmed: 

 Irs. truncate to subcordate. 

 G. Pistillate fls. in 2-4-fld. 

 fascicles: Irts. sub- 



chartaceous 17. fasciculatum 



GO. Pistillate fls. in dense 



racemes: Irs. thin 18. alpinum 



FF. Branches with slender 

 paired prickles, some- 

 times unarmed: hs. usu- 

 ally cuneate at the base... . 19. diacantha 

 AA. Branches with prickles, rarely nearly 

 unarmed: fls. 1-4 and pedicels jointed 

 (except in A r o. 20). 



B. Fls. in racemes; sepals broader than 



long: sts. very bristly 20. lacustre 



BB. Fls. 1-4; sepals longer than broad. 

 C. Color of fls. white or greenish suf- 

 fused with purple. 

 D. Sepals white (or greenish white 



in .Vo. 23). 

 E. Stamens as long as sepals or 



longer. 



F. Filaments villous: branch- 

 lets brown. 



G. Ovary glabrous; calyx- 

 tube about as broad as 



long 21. niveum 



oo. Ovary glandular or pu- 

 bescent; calyx-tube 

 twice as broad as long. . 22. curvatum 

 FF. Filaments glabrous; sta- 

 mens nearly twice as long 

 as the greenish white 

 sepals: branches yellow- 

 ish 23 missouriense 



EE. Stamens shorter than sepals: 

 young branchlets usually 

 very bristly. 



F. Peduncles scarcely exceed- 

 ing the bud-scales: calyx- 

 tube campanulate 24. oxyacan- 



FF. Peduncles elongated: calyx- [thoides 



tube cylindric-campanu- 



late 25. setosum 



DD. Sepals greenish, often tinged 



purplish. 

 E. Lrs. cuneate or rounded at the 



base. 



F. Sepals about as long as 



tube; stamens as long, 



rarely longer than sepals. .26. birtellum 



FF. Sepals about twice as long 



as tube; stamens slightly 



exceeding the sepals 27. rotundifolium 



EE. Lrs. subcordate or occasion- 

 ally rounded at the base. 

 F. Petals spatulate or flabel- 

 late, less than half as long 

 as sepals; style and 

 calyx-tube inside pubes- 

 cent. 



G. Fr. smooth or glandular- 

 bristly. 

 H. Ovary glabrous. 



I. Sepals longer than 

 tube ; stamens 

 slightly longer 



than sepals 28. divaricatum 



n. Sepals shorter than 

 tube; stamens 

 slightly shorter 



than sepals 29. inenne 



HH. Ovary pubescent or 

 glandular; stamens 

 about half as long as 



sepals 30. Grossularia 



GG. Fr. prickly, not glandular, 

 rarely smooth: stamens 

 less than half as long as 



sepals 31. Cynosbati 



FF. Petals elliptic, more than 

 half as long as sepals; 

 style and calyx-tube in- 



stde glabrous 32. alpestre 



CC. Color of fls. orange, purple, or 



bright red. 

 D. Fls. o-merous. 



E. Stamens shorter than sepals: 



fr. prickly. 



F. Sepals glabrous outside, 

 orange; anthers oval, yel- 

 low 33. pinetorum 



FF. Sepals pubescent outside, 

 purple; anthers sagittate, 



purple 34. Roezlii 



EE. Stamens longer than the pur- 

 plish red sepals 35. Lobbii 



DD. Fls. 4- merous ' bright red; sta- 

 mens 2-4 times as long as 

 sepals 36. speciosum 



