1 14 PAPILIONACEAE 



2. T. medium L. Like the last but leaflets not spotted, and flower 

 heads peduncled. — Independence and Courtney. Uncommon. May-Sep- 

 tember. 



3. T. hybridum L. Alsikb Clover. 1°-2° high, ascending : leaflets 

 obovate, serrate : flowers W-^" long, peduncled : pedicels l''''-2" long. — 

 Frequently adventized in waste places. May-September. 



4. T. repens L. White Clovee. Widely creeping : leaflets ob- 

 ovate to obcordate, serrate : flowers as in the last. — Very abundant in 

 fields, copses, etc. May-September. 



6. LOTUS L. 



Herbs with reddish-yellow flowers. Pods linear, 1-several-seeded. 



1. L. Americanus (Nutt.) Bisch. Peaikib Trefoil. 6'-2° high, 

 erect, pubescent : leaflets oblong : flowers numerous : peduncles l-flow- 

 ered, leafy-bracted : pod V long. Adventized along railroads at Shef- 

 field : also abundant along roads west of Lee's Summit. June-August. 



7. FSORALEA L. 



Leaves 3-5-foliolate. Flowers small, bluish, in racemes. Pods ovoid, 

 short, indehiscent, 1-seeded. 



Leaflets three. 



Plants canescent. 1. P. UmuAjbyra. 



Plants densely silvery-pubescent. 2. P. argophylla. 



Leaflets five. 3. P. esculenia. 



1. P. tenuiilora Pursh. Bushy, 2°-4° high : leaflets oval to oblong : 

 racemes slender, few-many-flowered : pods ovate to ovoid, abruptly 

 beaked. — Common in rocky barrens and prairies, especially in the south- 

 western part. May-July. 



2. P. argophylla Pursh. l°-2° high : leaflets oval-oblong : flowers 

 4" long, in interrupted spikes. — Adventized along the railroad three 

 miles south of Independence. May-July. 



3. P. esculenta Pursh. Peaieie Tornip. 12'-18' high, whitish 

 villous-pubesoent : leaves digitately 5-foliolate ; leaflets obovate : spikes 

 dense, often 3' long. — Adventized along railroad east of Sheffield. June. 



8. AMORPHA L. 



Shrubs with pellucid-dotted pinnate leaves and flowers in close spikes. 

 Corolla reduced to one petal, the standard, which is wrapped around the 

 style and stamens. Stamens monadelphous below. Pod short, 1-2- 

 seeded. 



Leaflets 12'''-24" long. 1. A. fruHcosa. 



Leaflets 3"-7'' long. 2. A. canescens. 



1. A. fruticosa L. False Indigo. 5°-15° high, pubescent or gla- 

 brate : leaflets 11-25, oblong-elliptical, short-stalked : spikes 3'-6' long : 

 flowers violet-purple. — Frequent along streams throughout. May-June. 



