638 FABACEAE 
equally sinuate above and below, the joints 8-10 mm. long, reticulated, appearing almost 
lozenge-shaped, the stipe abeut the length of the calyx-lobes. 
On plains and prairies, Nlinois to Alabama and Louisiana. Spring and fall. 
15. Meibomia bractiósa (Michx.) Kuntze. Stems erect, glabrous or nearly so, 1 m. 
high or higher, branched, angled: leaves large; stipules 8-15 mm. long, lanceolate, cus- 
pidate, somewhat cordate at the base, caducous ; petioles 3-8 cm. long, flat and channeled ; 
stipels conspicuous, setaceous, 5-15 mm. long, mostly persistent ; leaflets 3, the blades 
ovate or ovate-lanceolate, 0.5-1.5 dm. long, cuspidate or long-acuminate, glabrous or nearly 
so, paler and often glaucous beneath : panicles spreading, the upper part minutely pubes- | 
cent: bracts striate, cuspidate, glabrous, caducous: flowers numerous: pedicels slender, 
spreading: upper calyx-lip 2-toothed : corolla lilac-purple, showy, about 1 em. long: 
loment 2.5-5 em. long, rather broad at the joints, 3-7-jointed, the joints about 1 cm. 
long, straight or slightly rounded on the dorsal and half-rhombic on the ventral suture, 
reticulated, the stipe about the length of the lower calyx-lip. 
In thickets, Ontario to Michigan, Florida, Missouri and Texas. Summer and fall. 
16. Meibomia paniculata (L.) Kuntze. Stems slender, erect, 5-10 dm. high, panic- 
ulately branched, nearly glabrous: stipules small, setaceous, caducous: petioles 1-3.5 
em. long; leaflets 3, the blades 3-5 cm. long, oblong-lanceolate, oval or linear-lanceolate, 
obtuse, rarely acutish, glabrous or rarely minutely pubescent, paler beneath: racemes 
panicled, the branches spreading: bracts caducous: calyx-lobes attenuate, the upper lip 
deeply 2-toothed, the middle lower lobe much elongated : corolla purplish, turning green, 
5-6 mm. long: loment 2.5 cm. long or longer, mostly angled on the dorsal suture, the joints 
5-8 mm. long, obliquely triangular or half-rhombic, minutely pubescent, the stipe as long 
as the calyx-lobes. 
In copses, Ontario to Nebraska, Florida, Louisiana and Texas. Summer and fall.—A slender form 
with narrow more acute leaflets 5-8 mm. wide, is M. paniculata Chapmánii Britton, while the form with 
copiously puberulent stems and firm oblong-lanceolate leaflets pubescent beneath, and loments more 
strongly angled on the dorsal suture, is M. paniculata pübens (T. & G.) Vail. 
17. Meibomia laevigata (Nutt.) Kuntze. Stems terete, erect, 8-12 dm. high, 
glabrous or minutely uncinate-pubescent above, often glaucous: stipules subulate, cadu- 
cous : petioles 2.5-8 em. long: leaflets 3, the blades 4-11 cm. long, ovate or ovate-oblong, 
acutish or obtuse, sometimes mucronulate, paler beneath, the terminal leaflet sometimes 
rhomboid; racemes panicled, the branches spreading: bracts very small, caducous : upper 
calyx-lip entire or minutely 2-toothed : corolla blue-purple, 7-9 mm. long: loment 3-6- 
or rarely 8-jointed, 2-3 em. long or longer, straight or somewhat angled on the dorsal suture ; 
the joints 6-7 mm. long, half-rhombic, the stipe mostly as long as the lower joint. 
In pine lands, New Jersey to Missouri, Florida, Louisiana and Texas. Summer and fall. 
18. Meibomia rhombifdlia (Ell.) Vail. Stems rigid, erect or ascending, 6-10 dm. 
high, simple or branched, pubescent : basal leaves (in the case of small plants, or rarely all 
the leaves) 1-foliolate : stipules 5-10 mm. long, subulate, taper-pointed, persistent or cadu- 
cous; petioles 1-4 cm. long; leaflets 3, the blades 5-9 cm. long, ovate or ovate-lanceolate, 
sometimes truncate at the base, obtuse or acutish, often mucronulate, leathery, scabrous 
above, pubescent or densely villous and strongly reticulated beneath: racemes simple or 
panicled, mostly elongated, leafless: bracts minute, setaceous, caducous : calyx-lobes "d 
the upper lip 2-toothed : corolla purple, 6-8 mm. long: loment 1-3 em. long, 2-5-joint a 
somewhat twisted, the joints about 7 mm. long, obliquely half-rhomboid, slightly round 
or obscurely angled on the dorsal suture, the stipe often half as long as the joint. 
In pine lands, Virginia to Florida, Alabama and Louisiana. Spring to fall. 
19. Meibomia viridiflóra (L. ) Kuntze. Stems erect, 6-10 dm. high, terete, mostly 
downy : stipules lanceolate, attenuated, when persistent, spreading or reflexed : petioles : 
em. long: leaflets 3, the blades 4-9 cm. long, scabrous above, villous or tomentose benea , 
the terminal leaflet ovate or ovate-oblong, often rhomboid, not truncate, the others A: : 
racemes panicled, the branches spreading: bracts 2-3 mm. long, broadly ovate, cordate, ca mf 
cous: calyx hirsute, the upper lip triangular, minutely 2-toothed, the lower lip the eee 
corolla pale purple, turning green, 6-9 mm. long: loment 1-2 cm. long, 2-4-jointe tint 
joints about 5 mm. long, half-rhombic, straightish or obtusely angled on the dorsal suture, 
uncinate-pubescent, the stipe not quite the length of the lower joint. 
In woods, southern New York to Michigan, Missouri, Florida and Texas. Summer and fall. 
20. Meibomia Dillénii (Darl.) Kuntze. Stems erect, 6 dm. high, sulcate, gai’ 
or sparingly pubescent : stipules subulate, mostly caducous: petioles 2.5-5 cm. long : ae 
lets 3, the blades 4-10 em. long, oblong or"ovate-oblong, mostly obtuse, sometimes araen t 
late, often very thin, scabrous or with a few scattered soft hairs above, appressed-pu Ef 
or softly hirsute beneath, the terminal leaflet larger than the lateral ones: maet 
icled, the branches spreading: bracts small, caducous: upper calyx-lip entire or min 
