GOOSEBERRY FAMILY 389 



1. RIBES L. Sp. PI. 201. 1753. 



Unarmed or rarely bristly shrubs, with palmately veined and usually lobed leaves, 

 deciduous or rarely persistent. Racemes several- to many-flowered; pedicels jointed be- 

 neath the ovary, usually with a pair of bractlets just below the joint. Ovary smooth or 

 glandular, not spiny. Free portion of the hypanthium tubular or cup-shaped, often col- 

 ored, short or elongated, sometimes obsolete. Fruit disarticulating from the pedicel at 

 the joint. [Name from ribas, the Arabic name of Rheum Ribes.~\ 



A genus of about 60 species, natives of the subarctic and north temperate regions, extending to the Andes, 

 South America. Type species, Ribes rubrum L. 



Plants with spines or prickles. I- Lacustria. 



Plants without spines or prickles. 



Leaves evergreen, not palmately lobed. II. Vibuenifolia. 



Leaves deciduous, more or less palmately lobed. 



Ovary with sessile glands; free portion of hypanthium saucer-shaped. III. Hudsoniana. 



Ovary without glands or the glands stalked. 



Free portion of hypanthium obsolete; the sepals slightly united at the base. 



Ovary smooth. IV. Rubra. 



Ovary with gland-tipped hairs or rarely only with glandless hairs. V. Prostrata. 



Free portion of hypanthium evident. 



Anthers with a conspicuous cup-shaped gland at the apex. VI. Viscosissima. 



Anthers with at most a mere callus at the apex. 



Leaves involute in vernation; hypanthium tube smooth, yellow. VII. Aurea. 



Leaves plicate in vernation; hypanthium tube usually hairy, not yellow. 



VIII. Sanguinea. 



I. Lacustria. 



Leaves smooth or nearly so; racemes commonly 10-lS-flowered; berry black. 1. R. lacustre. 



Leaves pubescent and glandular on both surfaces; racemes commonly 3-7-flowered; berry red. 



2. R. tnontigenum. 



II. VlBURNIFOLIA. 



Leaves firm-coriaceous, repand-dentate or entire. 3. R. viburnifolium. 



III. Hudsoniana. 



Floral bracts large, broadest above the middle, those near the base of the raceme often foliaceous; sepals green; 

 berry with a whitish bloom. 4. R. bracteosxim. 



Floral bracts small, narrowed from the base to a sharp apex; sepals white; berry black, without bloom. 



5. R. petiolare. 



IV. Rubra. 



Sepals and petals yellowish green; anther cells distinctly separated by a broad connective. 



6. R. sativum. 



Sepals usually mottled with purple; petals red; anther cells contiguous. 7. R. triste. 



V. Prostrata. 



Bracts nearly equaling or exceeding the pedicels. 



Racemes erect or ascending; berries at maturity bright red and without bloom. 8. R. erythrocarpum. 



Racemes reflexed, and the pedicels again recurved upward; berry blue-black, with a bloom. 



9. R. acerifolium. 



Bracts not over half the length of the pedicels. 10. R. laxiflorum. 



VI. Viscosissima. 



Hypanthium over twice as long as broad; berry bright red at maturity. 



Styles usually pubescent above; bracts cuneate-obovate, the rounded or truncate apex cut into several deep 



teeth or lobes. H. R. cereum. 



Styles usually glabrous; bracts rhombic, often narrowly so, usually acute at the apex and entire or occa- 

 sionally with one lateral lobe, the margin usually minutely glandular-denticulate. 



12. 7?. inebrians. 



Hypanthium less than twice as long as broad; berry black or blue at maturity. 13. R. viscosissimum. 



VII. AUREA. 



Hypanthium as long as or little exceeding the sepals. 14. R. aureum. 



Hypanthium about twice as long as the sepals. 15. R. gracillimum. 



VIII. Sanguinea. 



Styles glabrous. 



Sepals erect, together with the short bowl-shaped hypanthium 4-6 mm. long. 16. R. nevadense. 

 Sepals spreading, together with the tubular hypanthium 8-12 mm. long. 



Leaves whitish tomentose beneath; ovary with short curled hairs among the gland-tipped ones; flowers 



red, in erect or ascending racemes. 17. R. sanguineum. 



Leaves usually without tomentum beneath; ovary with only gland-tipped hairs; flowers rose-pink, in 



drooping racemes. 18- R. glutmosum. 

 Styles pubescent, at least below; ovary densely clothed with gland-tipped hairs and straight divergent white 

 hairs. 

 Hypanthium longer than broad. 



Hypanthium pink, about twice as long as broad. 19. R. malvaceum. 



Hypanthium greenish white, little longer than broad. 20. R. indecorum. 



Hypanthium much broader than long. 21. R. canthariforme. 



