VOL. IV.] Contributions to We sterol Botany. 3 



along with A. pachypns. Apparently loosely caespitose from a 

 much branched woody base, two to five inches high or more, 

 stems rather slender though not for the size of the plant, nodes 

 one-fourth to one-half inch apart, or even closer; stipules 

 rather large for the plant, scarious, ovate, almost connate, free; 

 stems three to five inches long, ascending or some of them 

 horizontal, almost glabrous; leaves two to three inches long with 

 petiole which is nearly one-half the length; leaflets eight to 

 twelve pairs, one-fourth inch or less apart, truncate or emar- 

 ginate, oblanceolate to oval, one to four lines long, very decidedly 

 petiolulate, very sparsely pilose, or almost glabrous, the leaves 

 are so small that though the hairs are short they are still long 

 for the size of the leaf; peduncles slender, shorter than the 

 petiole and far overtopped by the uppermost leaves which are not 

 at all reduced but are the largest of all; flowers subcapitate, five to 

 twelve, on slender pedicels which are one to one and one-half lines 

 long and twice the length of the ovate, hyaline, rather pilose bract; 

 flowers horizontal, four lines long, ochroleucous in the dried 

 specimen; calyx tube campanulate, one and one-half lines long, 

 a little longer than the subulate lobes, whitish, rather densely 

 short-hairy and canescent; banner very wide at base and narrower 

 upwards, emarginate, bent at a right angle and erect, a line 

 longer than the keel; keel nearly straight but tip incurved at a 

 right angle and acuminate, the erect part nearly as long as the 

 rest of the blade; wings apparently lanceolate, ascending and 

 little exceeding the bend in the keel; pod apparently horizontal 

 or reflexed, fleshy, coriaceous, one-celled, neither suture 

 impressed but both very thick and prominent and rounded 

 externally, pod minutely and sparsely pubescent when mature, or 

 glabrous, faintly corrugated, abruptly acute with a stout beak 

 and almost acute at the sessile base, six lines'long or less, half 

 oval to almost elliptical, ventral suture nearly straight, dorsal 

 arched, apparently a little compressed when young but nearly 

 round thereafter in cross-section, faintly bisulcate on the ventral 

 side but the obcompressed appearance is doubtless due to the 

 pressing, as other pods are as markedly compressed from the same 

 cause. The flowers and pods lie among the leaves but are not 

 concealed by them, usually only two to four pods mature on the 



