396 GROSSULARIACEAE 



II. Setosae. 



Hypanthium narrowly tubular, 2-4 times as long as broad; longer than the white or pinkish sepals. 



5. G. cognata. 



Hypanthium campanulate, scarcely longer than broad, shorter than the green or greenish white sepals. 



6. G. irrigua. 



III. MlCROPHYLLAE. 

 Ovary glabrous or with a few hairs. 



Hypanthium about 4 mm. long, longer than the sepals. 7. G. lasiantha. 



Hypanthium about 2.5 mm. long, equaling or shorter than the sepals. 8. G. quercetorum. 



Ovary densely pubescent and often glandular-hairy. 9. G. velutina. 



IV. Watsonianae. 



Leaves without gland-tipped hairs; stamens exceeding the petals by the length of the anthers. 



10. G. binomincta. 

 Leaves with gland-tipped hairs; stamens about equaling the petals. 



Plants erect; young twigs merely puberulent. 11- G. Watsomana. 



Plants trailing; young twigs with gland-tipped bristles. 12. G. tularensis. 



V. LOBBII. 



Young shoots densely beset with coarse bristly hairs in addition to the nodal spines. 13. G. sericea. 

 Young shoots very rarely with a few bristles in addition to the nodal spines. 



Leaves densely glandular and viscid beneath. 14. G. Lobbii. 



Leaves glabrous or nearly so beneath. 15. G. Marshalhi. 



VI. Menziesii. 



Hypanthium about as long as broad and about a third or fourth as long as the sepals; young branches usually 

 with bristles in addition to the nodal spines. 

 Sepals greenish white; ovary with gland-tipped hairs but without intermingling glandless bristles. 



16. G. Victons. 



Sepals purple to green; ovary, at least when the sepals are green, with glandless bristles intermingling with 

 the gland-tipped hairs. 

 Ovary densely clothed with long straight white glandless hairs, with a few gland-tipped ones inter- 

 mingling. 17 - G. senilis. 

 Ovary with or without sparse inconspicuous curled hairs interspersed among the gland-tipped ones. 

 Leaves conspicuously glandular-pubescent; bristles of the ovary chiefly gland-tipped; young shoots 

 densely bristly. 

 Leaves thick, usually rugose, densely velvety pubescent beneath with gland-tipped hairs inter- 

 spersed. 18. G. Menstesn. 

 Leaves thin, not rugose, sparingly or not at all pubescent beneath when mature, the glands 

 except those on the veins sessile or nearly so. 

 Young shoots densely bristly; petals 4-5 mm. long, barely or not at all exceeded by the 



filaments. 19. G. Hystnx. 



Young shoots usually only sparingly bristly; petals 2.5-4 mm. long, the filaments nearly 

 twice as long. 20. G. leptosma. 



Leaves almost or quite devoid of glands beneath; ovary with chiefly or wholly glandless bristles; 

 young shoots without bristles. 

 Leaves glabrous or nearly so on both surfaces; sepals usually with a tuft of hairs at the apex, 



otherwise glabrous. 21. G. calif ornica. 



Leaves sparingly puberulent on both surfaces; sepals sparingly villous over the outer surface. 



22. G. hesperia. 

 Hypanthium much longer than broad; stems with nodal spines, but without bristles. 

 Fruit with strong eglandular spines; leaves very rarely with a few glands. 



Sepals, hypanthium, and leaves glabrous. 23. G. crucnta. 



Sepals and hypanthium pubescent, the leaves usually so. 24. G. Roezlii. 



Fruit with short gland-tipped bristles; leaves glandular. 25. G. amara. 



VII. Speciosae. 



Represented by only one species. 26. G. speaosa. 



1. Grossularia divaricata (Dougl.) Cov. & Britt. Straggly Gooseberry. Fig. 2332. 



Ribes divaricatum Dougl. Trans. Hort. Soc. Lond. 7: 515. 1830. 

 Ribes villosum Nutt. in Torr. & Gray, Fl. N. Amer. 1: 547. 1840. 

 Ribes tomentosum K. Koch, Wochenschr. Gart. & Pfl. 2: 138. 1859. 

 Ribes Suksdorfii Heller, Muhlenbergia 3: 11. 1907. 

 Grossularia divaricata Cov. & Britt. N. Amer. Fl. 22: 224. 1908. 



Shrub, 2-3 . 5 m. high, widely branching, the branches commonly without bristles, nodal spines 

 stout, often deflexed, sometimes wanting. Leaves thin, 2-6 cm. wide, usually 5-lobed, coarsely 

 crenate-dentate, usually sparsely villous on the upper surface, pubescent on the veins beneath or 

 glabrous; peduncles about as long as the petioles, drooping, 2-4-flowered ; pedicels filiform, ex- 

 ceeding the bracts; ovary glabrous; hypanthium 2-3 mm. long, greenish purple, glabrous or 

 sparingly villous ; sepals green or tinged with purple, oblong, 2-3 times as long as the hypan- 

 thium ; stamens longer than the sepals ; style villous ; berry smooth, black or dark purple. 



Shaded stream banks and bottom land, Humid Transition Zone; western British Columbia to central 

 California. Type locality : northwest coast of America. March-May. 



2. Grossularia inermis (Rydb.) Cov. & Britt. White-stemmed Gooseberry. 



Fig. 2333. 



Ribes inerme Rydb. Mem. N.Y. Bot. Gard. 1:202. 1900. 



Ribes Purpusii Koehne ex Blankinship, Mont. Agr. Coll. Sci. Stud. 1 : 64. 1905. 



