FABACEAE 639 
2-toothed, the lower lobes attenuate, the middle lobe twice the length of the later ones: 
corolla purple, 6-8 mm. long: loment 1-3 cm. long or longer, 3-6-jointed, the joints 5-12 
mm. long, half-rhombic, straightish, somewhat convex, or sharply angled on the dorsal 
suture, the stipe half the length of the lower joint or less, sometimes nearly as long. 
In woodlands, Ontario to Minnesota, Florida and Texas. Summer and fall. 
21. Meibomia ‘Illinoénsis (A. Gray) Kuntze. Stems erect, 6-9 dm. high, stout, 
sulcate, pubescent: stipules 1-1.5 cm. long, ovate, acute, cordate, ciliate, persistent : 
petioles 2.5-5 em. long: leaflets 3, the blades 5-9 cm. long, light yellowish green, oblong 
or ovate-lanceolate or lanceolate, obtuse, leathery, ciliate, scabrous on both surfaces, strongly 
reticulated and cinereous beneath, the lateral leaflets somewhat shorter and narrower than 
the terminal one: racemes simple or rarely panicled, naked: bracts caducous, 5-8 mm. 
long, ovate-lanceolate, ciliate: upper calyx-lip minutely 2-toothed, the lower one deeply 
3-toothed, with the middle lobe attenuated : corolla purple, turning brown in drying, 8-10 
mm. long: loment 3-7-jointed, 2-4 cm. long, mostly in pairs, merely sinuate on both 
sutures, the joints about 5 mm. long, oval or nearly orbicular, densely uncinate-pubescent, 
the stipe longer than the calyx-lobes. 
In dry grounds and on prairies, Illinois to Nebraska and Texas. Summer and fall. 
22. Meibomia Canadénsis (L.) Kuntze. Stems erect, 6-9 dm. high, striate, some- 
what hirsute with short spreading hairs or nearly glabrous: stipules lanceolate-linear, 5— 
10 mm. long, ciliate, mostly persistent : lower petioles 1-2 em. long: upper leaves sessile 
or nearly so ; leaflets 3, the blades 4-10 cm. long, oblong or oblong-lanceolate, obtuse, 
glabrous or somewhat scabrous and dark-green above, appressed-pubescent, paler and some- 
times reticulated beneath: racemes mostly panicled: bracts ovate-lanceolate, 6-9 mm. 
long, attenuated, striate, ciliate, pubescent, caducous : calyx-lobes attenuate, the upper 
lip 2-toothed ; lower lobes elongated : corolla bluish purple, or rarely whitish, 8-12 mm. 
long, showy : loment about 2.5 cm. long, 3-5-jointed, somewhat curved, sessile in the 
calyx or very short-stalked, the joints 5 mm. long, nearly oval or obtusely half-rhomboid, 
the stipe rarely as long as the calyx. 
In dry rich woods, New Brunswick to Saskatchewan, North Carolina and the Indian Territory. 
Summer and fall. . 
. 23. Meibomia rígida (Ell) Kuntze. Stems erect, 6-9 dm. high, rigid, striate, 
minutely pubescent : stipules small, caducous: upper leaves sessile or nearly so, the lower 
short-petioled ; leaflets 3, the blades ovate-oblong or elliptic, 2.5-8 cm. long, obtuse, often 
mucronulate, yellowish green and mostly scabrous above, pubescent and reticulated be- 
neath, the lateral leaflets smaller: racemes panicled, or sometimes simple, 4-5 mm. long: 
bracts caducous, very small : upper calyx-lip entire or minutely 2-toothed : loment 2-3- 
ointed or rarely 4-jointed, 8-15 mm. long, the joints 3-5 mm. long, obliquely oval or 
alf-obovate, rarely angled on the dorsal suture, very short-stipitate. 
In dry soil, Massachusetts to Michigan, Nebraska, Florida and Texas. Summer and fall. 
24. Meibomia obtüsa (Muhl.) Vail. Stems erect, 6-12 dm. high, hirsute or mi- 
nutely pubescent: leaves mostly crowded ; stipules subulate ; petioles ciliate, shorter than 
the leaflets ; leaflets 3, the blades mostly less than 2-5 cm. long, round-ovate or oval, 
rather leathery, somewhat scabrous above, paler, glaucous and sparingly pubescent beneath : 
= panicled: bracts caducous : upper calyx-lip entire or minutely 2-toothed, the 
ower lobes acute: corolla purple, 2-4 mm. long: loment 2-3-jointed, 10-15 mm. long, 
the Joints half-orbicular or half-obovate, the stipe not longer than the calyx. [Desmo- 
dium ciliare (Muhl.) DC.] 
june pt pos and in sandy fields, Ontario to Michigan, Missouri, Florida, Texas and Mexico. 
25. Meibomia Marylándica (L.) Kuntze. Stems erect, 6-9 dm. high, slender, stri- 
ate, glabrous or rarely with a few scattered hairs: leaves crowded ; stipules subulate, cadu- 
cous ; petioles as long as the leaflets ; leaflets 3, the blades ovate or sometimes suborbicular, 
rarely elliptical, 1-2.5 cm. long, obtuse, glabrous or rarely with a few hairs and glaucous 
neath : racemes simple or panicled : upper calyx-lip emarginate, obliquely and mi- 
nutely 2-toothed ; the lower lobes acute: loment 10-15 mm. long, 1-3-jointed, the joints 
obliquely oval or half-orbicular, the stipe mostly longer than the calyx. 
In copses, Massachusetts to Michigan, Missouri, Florida and Louisiana. Summer and fall. 
wee Meibomia purpürea ( Mill.) Vail. Shrubby. Stems stout, 6 dm. high or taller, 
Mud terete, pubescent: leaves 4-20 cm. long; stipules 10-15 mm. long, ovate, obliquely 
n T attenuate, ciliate, striate, often turning purplish, spreading or reflexed, persistent ; 
tj D €s 2-8 cm. long or more; stipels 4-8 mm. jum linear-lanceolate ; leaflets 3, the 
Do ovate, ovate-oblong or elliptical, 2-11 cm. long, obtuse, mucronate or mucronulate, 
E'abrate or scabrous above, pubescent and often reticulated beneath, the lateral leaflets 
