PAPILIOXACEAE 



129 



1. Cassia. 529. 



Leaflets 20-30. stipules persistent. 

 Leaflets 12-18, stipules caducous. 



1. C. chamaecrista. 

 2. C. marylandica. 



1. Cassia chamaecrista L. Partridge Pea. 

 Common in eastern Nebraska. Ewing; Guide Rock; Lincoln; Red 

 Cloud; Richardson County; Wahoo. 



2. Cassia marylandica L. Wild Senna. 

 Rare in the southeastern part of the state. Guide Rock; Red Cloud. 



2. Gleditsia. 530. 



1. Gleditsia triacanthos L. Honey Locust. 



In rich soil in the eastern part of the state. Lancaster County. 



3. Gymnocladus. 531. 



1. Gymnocladus dioica (L.) Koch Kentucky Coffee-Tree. 



On alluvial soil in the southeastern part of the state and along the 

 Missouri as far north as Cedar County. Louisville ; Richardson 

 County. 



4. Cercis. 529. 



1. Cercis candensis L. Red-Bud, Judas-Tree. 



Common in woods along streams in the southeastern part of the 

 state. Bellevue; Richardson County. 



2b. Subfamily MIMOSACEAE. 



Stems armed with recurved prickles, legumes prickly, corolla gamo- 



petalous. 2. Morongia. 



Stems and legumes smooth, petals free. 1. Acuan. 



1. Acuan. 527. 



1. Acuan illinoensis (Michx.) Kuntze. 



Desmanthus illinoensis (Michx.) MacM. 

 Common in the eastern part of the state, 

 coin; Niobrara; Newark; Red Cloud. 



Callaway; Kearney; Lin- 



2. Morongia. 528. 



1. Morongia uncinata (Willd.) Britton. Sensitive-Briar. 



Schrankia uncinata Willd. 

 Prairies and hillsides in the eastern part of the state. Adams County; 

 Fairbury; Gosper County; Grand Island; Niobrara; Red Cloud; Ver- 

 digris. 



2c. Subfamily PAPILIONACEAE. 



Stamens not united by their filaments. 



Leaves pinnate, leaflets 7-25. 1. Sophora. 



Leaves simple or 3-foliate. 



Pods 7-10 cm. long, flat, curved; foliage not blackening in drying. 



2. Thermopsis, 



