488 FLORA. 



io. Ribes prostratum L'Her. Fetid Currant. (I. F. f. 1872.) Branches 

 decumbent or spreading. Petioles slender, 3-7 cm. long, the dilated base some- 

 times ciliate; leaves nearly orbicular, sharply and deeply 5-7-lobed, 3-7 cm. wide, 

 usually somewhat pubescent along the veins beneath, the lobes acute or acutish, 

 dentate-serrate ; flowers racemose, about 5 mm. broad ; pedicels 4-5 mm. long, 

 glandular, bracted at the base; stamens short, not exserted. In cold wet places, 

 Lab. to the N. W. Terr, and Br. Col., south to N. Car., Mich, and Colo. Plant 

 with a disagreeable odor. May-June. 



11. Ribes Hudsonianum Richards. Northern Black Currant. (I. F. 

 f- l &73-) Branches erect. Petioles slender, 3-10 cm. long; leaves broader than 

 long, 3-10 cm. wide, more or less pubescent and resinous-dotted beneath, 3-5- 

 lobed, the lobes obtuse or acutish, coarsely dentate; pedicels 4 mm. long or less; 

 flowers white, 4-6 mm. broad; calyx-lobes oval, obtuse; stamens short, not exserted; 

 bracts setaceous, deciduous; fruit black, glabrous, 4-6 mm. in diameter. Hudson 

 Bay and western Ont. to N. W. Terr. May-June. 



Ribes nigrum L., the Black Currant of the gardens, with similar leaves, but loosely 

 flowered drooping racemes, is beginning to escape from cultivation. 



s~ 12. Ribes rubrum L. Red Currant. (I. F. f. 1875.) Petioles slender, 

 glabrous or sparingly pubescent, 3-8 cm. long; leaves pubescent beneath, at least 

 when young, orbicular or broader, cordate at the base, 3-5-lobed, the lobes acutish, 

 sharply dentate ; pedicels longer than the ovate bractlets ; flowers greenish or 

 purplish, about 4 mm. broad; calyx flat-campanulate; stamens short; fruit 4-8 

 mm. in diameter. In cold woods, Lab. to Alaska, northern N. Eng , N. J., Ind. 

 and Minn., and escaped from cultivation in the Middle and Eastern States. Also 

 in Europe and Asia. May-June. 



— 13. Ribes floridum L'Her. Wild Black Currant. (I. F. f. 1874.) Branches 

 erect. Petioles slender; leaves nearly orbicular, glabrous above, somewhat pubes- 

 cent and resinous- dotted beneath, 3-8 cm. wide, sharply 3-5-lobed, the lobes 

 dentate-serrate, acutish; bractlets linear, much exceeding the pedicels, or shorter; 

 flowers greenish- white, 8-10 mm. long; calyx-lobes short, broad, obtuse; stamens 

 not exserted; fruit globose-ovoid, about 6 mm. in diameter. In woods, N. S. to 

 Va., Manitoba, and Neb. April-May. 



/* 14. Ribes cereum Dougl. White-flowered Currant. Squaw Currant. 

 (I. F. f. 1876. ) Petioles more or less glandular-pubescent, 6-20 mm. long; leaves reni- 

 form-orbicular, cordate at the base, 1-4 cm. wide, sparingly glandular-pubescent, or 

 glabrate on both sides, 3-5-lobed, the lobes obtuse, crenate or crenulate; racemes 

 short, pubescent, pendulous; bractlets persistent; flowers sessile or short-pedicelled, 

 pink or greenish-white; petals minute, nearly orbicular; stamens short; fruit insipid, 

 about 6 mm. in diameter. Dry hills, from S. Dak. and Neb., to Br. Col., Ariz, 

 and Cal. May-June. 



15. Ribes aureum Pursh. Golden, Buffalo or Missouri Currant. (I. 

 F. f. 1877.) Petioles slender, pubescent, at least when young; leaves pubescent 

 and ciliate, or at length glabrous and shining, often broader than long, thick, 3- 

 lobed or sometimes 5-lobed, broadly cuneate or truncate at the base, the lobes 

 obtuse; racemes leafy-bracted, few-flowered; flowers spicy-scented, 12-25 mm. 

 1 wig; calyx-tube cylindric, glabrous, 3-4 times as long as the oval spreading lobes; 

 stamens slightly exserted; fruit black, glabrous, 6-10 mm. in diameter. Along 

 streams, Minn, to Mo., Tex., Cal., Ore. and the N. W. Terr. April-May. 



Ribes aureum chrysoc6ccum Rydb. Fruit yellow when mature, more acid. West- 

 ern Neb. to Mont. 



Family 9. HAMAMELIDACEAE Lindl. 



Witch Hazel Family. 



Trees or shrubs, with alternate petioled simple leaves, and perfect or 

 polygamous flowers, variously clustered. Perianth often imperfect, or 

 sometimes none. Calyx-tube, when present, more or less adnate to the 

 ovary, its limb truncate or 5-lobed. Petals, when present, 4-00 , perigy- 



