This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
1803. Not L. 1753. Desmodium Dillenii Darl. Fl. Cest. 414. 1837. Meibomia Dillenii Kuntze, Rev. Gen. Pl. 195. 1891.
Erect, 2°-3° high, pubescent with scattered hairs, or nearly glabrous. Stipules subulate, mainly deciduous; petioles l'-2' long; leaflets usually thin, oval or oblong-ovate, obtuse, 1 1/2'-4' long, 1/2'-1 1/2' -wide, sparingly pubescent or glabrous above, softly pubescent or villous beneath; racemes terminal, compound, loose; bracts small, deciduous; upper calyx-lobe entire or minutely 2-toothed, the lower ones slender; flowers 3"-4" long; loment 2-4-jointed, the joints nearly triangular, about 3" long, somewhat convex on the back, uncinate-pubescent; stipe shorter than the calyx-lobes.
8: 289. 1870. M. illinoensis Kuntze, Rev. Gen. Pl 198. 1891.
Erect, stout, 2°-4° high, uncinate-pubescent. Stipules ovate, acute, cordate, ciliate, pubescent, persistent; petioles 1'-2' long; leaflets lanceolate or ovate-lanceolate, obtusish, coriaceous, scabrous above, strongly reticulate-veined and cinereous beneath, 2'-3 1/2' long, the terminal one broader and longer than the lateral; racemes terminal, simple or compound; bracts deciduous, ovate-lanceolate; calyx-lobes acute, the upper one minutely 2-toothed; flowers 3"-4" long; loments 1/2'-1' long, often in pairs, 3-6-jointed, the joints oval or orbicular, densely uncinate-pubescent; stipe not longer than the short upper lobe of the calyx.
Prairies and plains, Ontario (according to Ma-coun); Ohio to Michigan, Iowa, Nebraska, Kansas and Oklahoma. June-Sept.
Hedysarum canadense L. Sp. Pl. 748. 1753. Desmodium canadense DC. Prodr. 2: 328. 1825. M. canadensis Kuntze, Rev. Gen. Pl. 195. 1891.
Erect, stout, pubescent, 2°-8° high. Stipules linear-lanceolate, persistent, or at length deciduous; lower petioles 1/2' - l' long, the upper leaves nearly sessile; leaflets oblong or lanceolate-oblong, obtuse, glabrous or roughish above, appressed-pubescent beneath; racemes terminal, densely panicled; flowers large, 5"-8" long, conspicuous, purple or bluish-purple; bracts ovate-lanceolate, large, acute, ciliate, at length deciduous; calyx-lobes attenuate, the upper 2-toothed, the lower ones elongated; loment nearly sessile in the calyx, about 1' long, 3-5-jointed; joints triangular, straight or convex on back, uncinate-pubescent.