Jones: Flora of Illinois, 84. Leguminosae 165 



21. Wisteria Nutt. 



(Kraunhia Raf.) 

 1. Pods glabrous; pedicels 6-10 mm. long, glandular-pubescent; swampy woods, 

 s. III., rare. Known from Pulaski, Alexander, Pope, and St. Clair coun- 

 ties. June-July W. macrostachya Nutt. 



1. Pods velutinous; pedicels 1-3 cm. long, short- villous; cult.; native of China. 

 May-June. [PF. chinensis DC.} W. sinensis (Sims) Sweet 



22. Astragalus L. — Milk-vetch 



1. Corolla purplish blue, 8-10 mm. long; leaflets oval, 4-10 mm. long; calyx 

 minutely pubescent; pods glabrous, about 1.5 cm. long; dry soil, local. 

 Cook, Cass, and St. Clair counties. [^Holcophacos dis tortus (T. dC G.) 

 Rydb.] A. distortus T. & G. 



1. Corolla whitish or cream or greenish yellow, 1-2.5 cm. long; calyx pubescent, 

 the teeth subulate or deltoid. 

 2. Calyx-teeth subulate. 



3. Leaflets 1.5-4 cm. long; pods ellipsoid, glabrous; river banks and hill- 

 sides throughout III., but not common. June-Aug 



A. canadensis L. 



3. Leaflets 5-15 mm. long; pods ovoid, pubescent; prairies, Will and Ogle 

 counties. May-June A. plattensis Nutt. 



2. Calyx-teeth deltoid; leaflets 5-15 mm. long; pods glabrous, subglobose; 

 prairies, rare. Macoupin Co. (?), Andrews. [Geoprumnon trichocalyx 

 (Nutt.) Rydb.} A. trichocalyx Nutt. 



23. CoRONiLLA L. — Crown-vetch 



C. varia L. Roadsides and waste places, occasional; adv. from Eur. June- 

 Aug. 



24. Desmodium Desv. — Tick-clover 

 (Meibomia Heist.) 

 1. Pods conspicuously long-stipitate, the stipe 2-3 times the length of the 

 calyx; stipules small, inconspicuous, setaceous, deciduous. 

 2. Panicle on a leafy stem; fruiting pedicels 5-8 mm. long. 



3. Leaves scattered along the stem; corolla white, 5-6 mm. long; woods, s. 

 111. July-Sept D. pauciflorum (Nutt.) DC. 



3. Leaves clustered at the base of the peduncle; corolla rose-purple, 6-7 

 mm. long; rich woods, common. June-Aug. [D. acuminatum DC; 

 D. grandiflorum sensu Robins. 8C Fern., non DC; M. grandiflora 

 sensu auth., non Ktze.} D. glutinosum (Muhl.) Wood 



2. Panicle on a long leafless peduncle; fruiting pedicels 1-2 cm. long; corolla 

 rose-purple, 6-11 mm. long; leaflets oval or ovate, acute, glabrous or 



sparingly pubescent; woods, common. July-Aug 



D. nudiflorum (L.) DC. 



1. Pods short-stipitate or sessile. 



4. Stipules conspicuous, persistent, lanceolate to ovate, acuminate. 



