488 



AMERICAN JOURNAL OF BOTANY 



[Vol. io, 



Base of the pistil or of its stipe usually surrounded 

 by a more or less developed saucer-shaped 

 disk within the staminal sheath; racemes 

 terminal, or terminal and in the upper 

 axils, or opposite the leaves, or if axillary, 

 the leaflets with parallel oblique lateral 

 veins. 

 Leaflets with parallel or indistinct lateral 

 veins; pods obliquely striate; leaves with- 

 out stipels; herbs or low shrubs. 

 Leaflets netted- veined; pods not obliquely 

 striate; leaves mostly with stipels; trees or 

 (ours) woody vines. 

 Base of the pistil or its stipe not surrounded by a 

 disk; racemes always axillary; leaflets not 

 with parallel oblique lateral veins. 

 Pods flat, or if terete with prominent sutures, 

 neither inflated nor with even a vestige 

 of a longitudinal partition. 

 Flowers in fascicles, on short branches 

 arising in the axils of fallen leaves; 

 leaves abruptly pinnate; banner usually 

 enveloping the other petals. 

 Flowers in axillary racemes; leaves odd- 

 pinnate, except in some species of 

 Coursetia and occasionally in Olneya; 

 banner mostly spreading. 

 Pods more or less inflated or completely or 

 partially 2-celled, by the intrusion of 

 one or both sutures. 

 Style bearded along the upper margin; 



pods always I -celled and inflated. 

 Style glabrous, or bearded only around 

 the stigma. 

 Anther-cells not confluent; pods not 

 prickly; plant not glandular-dotted. 

 Anther-cells confluent at the apex; 

 pods in ours prickly; plant glandu- 

 lar-dotted. 



Subtribe I. Craccanae. 



Subtribe 2. Millettianae. 



Subtribe 7. Corynellanae. 



Subtribe 8. Robinianae. 



Subtribe 9. Coluteanae. 



Subtribe 10. Astragalanae. 



Subtribe 11. Glycyrrhizanae. 



Subtribe i. Craccanae 



Herbs or shrubs, with alternate odd-pinnate leaves, persistent stipules, 

 but no stipels, the leaflets usually with parallel oblique lateral veins. The 

 flowers are racemose. The calyx is campanulate 5-lobed, but the upper 

 lobes are often more or less united. The corolla is truly papilionaceous, 

 the petals are more or less clawed, the banner is broad and spreading. The 

 stamens are monadelphous or diadelphous, inserted on a more or less de- 

 veloped campanulate disk. The style is glabrous throughout or more or 

 less hairy around the stigma. The legume is elongate, flat, 2-valved, 

 usually obliquely striate. The seeds are reniform or transversely oblong, 

 i.e., their longer axis parallel to the axis of the pod. 



