Jones: Flora of Illinois, 84. Leguminosae 169 



4. Racemes 2-8-flowered; leaflets 4-8. 



5. Stem distinctly winged; leaflets linear to elliptical; flowers 1.5-2.5 

 cm. long; moist ground and open woods. May- July. [L. palustris 

 var. linearifolius Ser.} L. palustris L. 



5. Stem merely angled; leaflets elliptical to oval; flowers 10-15 nmi. 



long; moist ground and thickets. June-July 



L. myrtif alius Muhl. 



4. Racemes 10-24-flowered; leaflets 8-14, oval; stem 4-angled, puberu- 

 lent or glabrous; open woods and moist thickets, n. and e. III. 



May-June. [L. venosus var. intonsus Butters & St. John] 



L. venosus Muhl. 



3. Stipules broad, foliaceous, nearly as large as the adjacent leaflets; stem 

 glabrous; leaflets 6-10, thick, oval; racemes 6-10-flowered; flowers 

 about 2 cm. long; sandy soil near Lake Michigan, rare. June-Aug. 



Beach Pea. [L. japonicus Willd. var glaber (Ser.) Fern.} 



L. maritimus (L.) Bigel. 



2. Leaflets 2; stem and petioles winged; frequently cult, and sometimes spont. 



in waste places and along roads; introd. from Eur. Everlasting Pea 



L. lat if alius L. 



1. Flowers yellowish white or yellow; stipules large. 



6. Leaflets 4-6, ovate or broadly oval; corolla yellowish white; peduncles 2-5 

 cm. long; stem terete; woods, n. 111. May-July ...L. achroleucus Hook. 



6. Leaflets 2, lanceolate; corolla yellow; peduncles 5-10 cm. long; stem an- 

 gled; fields and waste places, occasional; adv. from Eur. July-Aug 



L. pratensis L. 



29. Apios Ludw. — Groundnut 



A. americana Medic. Woods and thickets. July-Aug. [^Glycine apias L.; 

 A. tuberosa Moench; A. apias (L.) MacM.] 



30. Phaseolus L. — Kidney Bean 



P. polystachyus (L.) BSP. Woods and thickets, s. III. July-Sept. 



31. Glycine L. — Soy Bean 



G. sa]a (L.) Sieb. 8i Zucc. Extensively cult., and sometimes spont.; native 

 of Asia. [Saja max Piper; G. max Merrill} 



32. ViGNA Savi 



V. sinensis (L.) Endl. Cow Pea. Cult., and occasionally spont.; native of 

 Asia. July-Sept. 



33. Strophostyles Ell. — Wild Bean 



1. Leaflets rhombic-ovate to 3-lobed; flowers 7-10 mm. long; calyx-tube 2-2.5 

 mm. long; pods 5-9 cm. long, strigose to nearly glabrous; seeds 5-8 mm. 

 long; sandy soil along roads or in open woods. July-Sept. \_S. angulasa 

 Ell.; S. missouriensis (Wats.) Small} S. helvola (L.) Britt. 



