FABACEAE 635 
in ae with ovate or oval blades: racemes terminal as well as 
axillary. 
Corolla cream-colored or ochroleucous: stipules ovate: racemes 
mostly simple. 
Corolla purple: stipules subulate : racemes mostly paniculate. 
** Stems erect or ascending. 
Petioles wanting or very short. 8. M. sessilifolia. 
Petioles manifest. 
Leaflets with narrowly linear blades. 
Joints of the pod with a straight or depressed back, triangular in 
outline. 9. M. stricta. 
Joints of the pod with a rounded back, not'triangular in outline. 10. M. tenuifolia. 
Leaflets with lanceolate to ovate or rhomboidal blades, never linear. 
Joints of the loments manifestly longer than broad. 
Bractssubtending the flowers small and inconspicuous: blades 
of the leaflets reticulated. 
Pods not more pubeseent on the edges than the sides. 11. M. canescens. 
Pods copiously ciliate. 
Blades of the lateral leaflets not subcordate at the base: 
. M. ochroleuca. 
. M. glabella. 
Io 
s deeply constricted along the back. 12. M. Lindheimeri. 
Blades of the lateral leaflets subcordate at the base: 
pods not much constricted along the back. 18. M. Tweedyi. 
Bracts subtending the flowers conspicuous, mostly over 1 em. 
long: blades of the leaflets not reticulated. 
Leaves pubescent: bracts ciliate and pubescent. 14. M. longifolia. 
. , Leaves glabrous: bracts not ciliate and otherwise glabrous. 15. M. bracteosa. 
Joints of the loments barely longer than broad. 
Foliage glabrous or slightly pubescent. 
Leaflets green beneath. 16. M. paniculata. 
Leaflets conspicuously glaucous beneath. 17. M. laevigata. 
Foliage variously pubescent. 
Loments rud stalked (or sometimes sessile in M. Illi- 
A 0€nst& ). 
Leaflets with leathery blades. 
Corolla about 10 mm. long : standard 5-7 mm. broad. 
Blades of the leaflets prominently reticulated. 18. M. rhombifolia. 
Blades of the leaflets not reticulated. 19. M. viridifiora. 
Corolla 5-7 mm. long: standard about 4 mm. broad. 
Leaflets with membranous blades. 20. M. Dillenii. 
Loments sessile or relatively short-stalked. 
Joints of the loments 4-7, 5 mm. long: corolla about 1 
em. long. 
Leaflets with leathery blades. 21. M. Illinoensis. 
Leaflets with relatively thin blades. 22. M. Canadensis. 
es of the Joments1-3, 3-5 mm. long : corolla 7-5 mm. 
ong. 
Leaflets scabrous or pubescent and ciliate. 
Terminal leaflet usually twice as long as broad. 23. M.rigida. 
Terminal leaflet little longer than broad. 24. M.obtusa. — 
Leaflets glabrous. 25. M. Marylandica. 
b. Constrictions equally deep on both sides of the loment. 26. M. purpurea. 
6 
B. ROM YE constrieted into separate joints, straight above, undulate below. à 
Herb: bl Mic OLBIA, broadest below the middle. 27. M. supina. 
ets broadest above the middle. 28. M. triflora. 
1. Meibomia nudiflóra (L.) Kuntze. Foliage somewhat pubescent. Leaves in a 
cluster at the summit of the 2-3 dm. high ascending or decumbent sterile stem : scapes 
Five naked, 3-8 dm. long: stipules setaceous, caducous : petioles 3-10 cm. long : leaflets 
, the blades oval or ovate, 2-8 cm. long, slightly acuminate to the blunt apex, glabrous 
xd HR Ingly ubescent, usually ciliate, pale beneath, the terminal leaflet somewhat 
reins lc, the lateral inequilateral: panicle narrow, few-flowered : calyx-lobes unequal, 
use, the lower one the longest : corolla purplish ; standard with two dark spots at the 
ees : loment 2-3-jointed, rarely 4-jointed, the joints 10-13 mm. long, straight or slightly 
oncave on the dorsal suture, glabrous, the stipe nearly as long as the pedicel. 
In dry woods, Ontario to Missouri, Kansas, Florida and Louisiana, Summer. 
Ting Meibomia grandiflora (Walt.) Kuntze. Foliage pubescent with soft scattered 
Mami yae ly glabrous. Stems erect, over 3 dm. high, angled: leaves in a cluster at the 
i i. o the stem, from which rises the long naked peduncle: petioles 7-15 cm. long ; 
u'es setaceous, mostly persistent ; leaflets 3, the blades ovate, 5-13 em. long, acuminate, 
Lv m with scattered hairs on both surfaces, the terminal leaflet orbicular-ovate ; pan- 
o b igh spreading: bracts caducous: calyx-lobes minute, acutish: corolla conspic- 
obliqu ie t rose-purple : Joment 2-3-jointed, the joints about 1 cm. long, concave above, 
Ern, P rounded or semi-rhomboid on the ventral suture, uncinate-pubescent, but the 
re glabrous or nearly so, the stipe as long as the pedicel. 
In dry or rocky woods, Quebec to Minnesota, Nebraska, Florida and Texas. Summer and fall. 
a i. Meibomia pauciflóra ( Nutt.) Kuntze. Foliage sparingly pubescent. Stems de- 
ules cad or ascending, 3-5 dm. long, pubescent with scattered hairs: leaves distant ; stip- 
caducous ; leaflets 3, the blades ovate or rhombic-ovate, 2.5-8 cm. long, acuminate or 
