L86 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



connate with the others; ovary sessile or Btipitate; Btyle indexed; stigma small, ter- 

 minal, often capitate; pod exserted, n ssile, or Btipitate, compreesed, Buperior suture 

 straight or like 1 1 1 « - inferior more or leas Binuate, with I to many membranous or cori- 

 aceous articulations, flat or rarely Bub turgid, glabrous or more or less hispid, usually 

 indehiscent at maturity and separating from one another, Bometimes dehiscing bj the 

 inferior BUture; Beeds 2 to many, ovoid or globose-reniform, compressed. Berbs or 

 shrubs, sometimes arboreous or Bcandent; leaves bipinnate; leaflets usually 3, some- 

 times only I the terminal . rarely 5, often rather large, with stipels; Btipules often 

 Bcarious, striate, or connate; flowers small, rose-colored, purple, bluish, or white, in 

 compound rarely Bimple racemes, terminal, or axillary; occasionally solitary ora few 

 fascicled in the axils; bracts often membranous, Bubulate, Btriate, persistent, or 

 caducous; bracteoles distinct and persistent or very small ami caducous] often entirely 

 wanting. 



KKY TO THE >l'l< II 3. 



Flowers in terminal, short, crowded racemes, or 2 to I together 

 in the axils of, or opposite to the leaves. 

 Flowers in Bhort, crowded racemes, in pairs in the axils 



of the wide caducous bracts. Section Nn olsonia. 

 Flowers 2 to i together on long Aliform pedicels in the axils 

 of t h<- leaves or opposite to them, inure rarely in few - 

 flowered terminal racemes, when they are solitary in the 

 axils of the bracts. (Section Sagot) \. i 

 Flowers in lax, usually elongated, racemes or panicles. 



Upper suture of the pod straight, the lower deeply indented; 

 pod indehiscent. : Section Heteroloma. 

 Bracts rather large and wide, before florescence im- 

 bricate. 

 Bracts small, inconspicuous. 



Stipules more or less connate at the base. 



Articulation.- of the pod 2; Btipe longer than 



the calyx. 

 Articulations of the pod numerous; Btipe 

 shorter than the calyx. 

 Stipules usually free, only the younger ones 

 slightly connate. 

 Stipules cordate. 



Stipules oblong-lanceolate or lanceolate. 

 Both sutures of the pod deeply indented, indehiscent. 



lion CHALARI1 M. 



Pod Btrongly constricted, more or less tortuous. 



Pod with 2 articulations, superior one enlarged, 



fertile. 



Pod with many equal articulations. 



Perennial, erect: stipules oblique-subulate; 

 pod tortuous, at length flattened; articu- 

 lation- obicular, flat. 

 Annual flaccid, at length subscandent, rooting 

 ;it the base; pod very tortuous and lasting 

 so: articulations rhomboid-orbicular. 

 Pod slightly constricted at the dissepiments, not tor- 

 tuous; articulations oval-linear. 



1 . 1>. barbatum. 

 '2. I>. triflorum. 



:;. />. (isn ndt us. 



•1. I>. a i Hhin . 



•">. l>. supxnum. 



I>. albiflorum. 

 h. wydlerianum, 



8. I>. molle. 



!». l>. tortuosum. 



in 



/>. spirale. 



h. scorpiw us. 



