Jones: Flora of Illinois, 84. Leguminosae 161 



1. Desmanthqs Willd. 

 D. illinoensis (Michx.) MacM. Illinois Mimosa. River banks or along 

 railroads, local. \_Acua7i illinoensis (Michx.) Ktze.} Known from Cook, Kan- 

 kakee, Grundy, La Salle, and Peoria counties; also in s. 111. July- Aug. 



2. Schrankia Willd. 



(Leplogloitis DC; Morongia Britf.) 

 S. unc'mata Willd. Sensitive-brier. Dry sandy soil, rare. Peoria, Aug. 1901, 

 and June 1903, McDonald. [L. nuttallii DC; M. nncinata Britt.; S. nuttallii 

 (DC.) Standi.} 



3. Cercis L. — Redbud 



C. canadensis L. Woods, common throughout 111., except the n.w. counties. 

 Apr.-May. 



4. Gymnocladus Lam. — Kentucky CoflFee-tree 

 G. dioica (L.) K. Koch. Woods, common throughout III. May-June. 



5. Gleditsia L. 



1. Pods 10-50 cm. long, many-seeded, indehiscent; spines stout, often com- 

 pound, rarely absent; woods, common throughout 111. May-June. Honey 



Locust. The spineless form is /. inermis (Pursh) Fassett 



G. triacanthos L. 



1. Pods obliquely oval, 2-4 cm. long, 1 -seeded, at length dehiscent; spines 

 slender, mostly simple; borders of swamps, s. 111., rare; known from Alex- 

 ander, Johnson, Pulaski, Massac, Calhoun, Gallatin, and Lawrence coun- 

 ties. Water Locust G. aquatica Marsh. 



6. Cassia L. 



{Chamae crista Moench ; Dilremexa Raf.) 

 1. Corolla regular, the petals nearly equal; leaves not sensitive to the touch; 

 stipules deciduous; leaflets 2-6 cm. long; calyx-lobes obtuse; stamens 10, 

 the upper 3 imperfect. 



2. Leaflets 8-20; petiole with a gland near the base; pods 6-13 cm. long, 5- 

 10 mm. wide. 

 3. Leaflets lanceolate, acuminate; stipules lanceolate; petiolar gland glo- 

 bose; petals 1.5-2 cm. long; plants annual; waste ground, occasional; 



native of the tropics. Chicago, Moffatt in 1897. Coff-ee-weed 



-C. occidentalis L. 



3. Leaflets elliptical, mucronate; stipules setaceous; petals 10-12 mm. long; 

 plants perennial, native. 

 4. Ovary villous; petiolar gland clavate; pods loosely villous, the seg- 

 ments about as long as broad; seeds flat, suborbicular; alluvial soil, 

 roadsides, or in open woods. July-Aug. [C. mardandica of auth., 



not L.} C. hebecarpa Fern. 



4. Ovary strigose; petiolar gland ovoid; pods glabrous or sparsely hir- 

 tellous, the segments much shorter than broad; seeds plump, ellip- 

 soid or obovoid; roadsides and alluvial soil. July-Aug. [C. meds- 

 geri Shafer] C. mardandica L. 



