144 rouo-scierocarpi. 



A2B. Pods conspicuously stipitate, with stipe longer than calyx and 

 recurved, and the body very falcate upwards, acuminate at both 

 ends but most at base, opening first at base and through the 

 stipe, much laterally flatened at tip and base, conspicuously ob- 

 compressed in the middle when mature and corrugated finely, 

 not hairy, rounded on the sides but appearing almost as if 

 winged at the thick and raised sutures when dry, and cartila- 

 ginous, elongated-lunate, 2-5 cm. long including the stipe. Leaf- 

 lets several pairs, narrow, all jointed to rachis by slender petio- 

 lules, obtuse. Flowers 1-1.5 cm. long, the petals not elongated 

 nor stubby, ascending. Calyx campanulate to short-cylindric, 

 about 5 mm. long, hyaline and black-hairy, the teeth shorter 

 than the tube. Pedicels short and stout, recurved in fruit. 

 Bracts ovate to triangular, 1-2 mm. long, about as long as pedi- 

 cels. Banner arched 45 to 80 denrees remote from calyx tip, 

 the blade 9 mm. long and with sides reflexed. Wings nar- 

 rowly oblong, arched 15 to 20 degrees, 2 mm. shorter than ban- 

 ner. Keel wide, the tip rounded and very obtuse, straight, in- 

 curved at tip to 80 to 100 degrees. Stioules snill, green, 

 Stems tufted from a woody root, about 2 ft. high, ratho-- flexuous, 

 with internodes less than half as long ns the leaves, somewhat 

 ashy throughout. Plants of the upper edge of the Lower Tem- 

 perate life zone, in dry places, blooming in early summer. 

 Sclerocarpi. 



Pods narrow, acuminate at hr.tli t-ntls. 104 srlr-rocarpus. 



A. Pods either wholly or partly 2-celled by the intrusion of the 

 dorsal and ventral sutures but partition never complete by the 

 union of the sutures, with the tip 1-celled, mostly slightly in- 

 flated, 1.5-4 cm. long, 5-7 mm. high, 7-10 mm. wide, inclined to 

 be a little obcompressed except in A. pachypus. smooth, very 

 fleshy and nearly round when fresh, with firmer inner wall, 

 the pulp about 1 mm. thick, the cavity filled with pulpy fluid when 

 green, coarsely wrinkled or cross-ringed and woody when dry, 

 never reflexed, oblique, oblong, a little arched by the ventral 

 suture being concave and raised, abruptly contracted into a stout 

 conical-subulate beak 2-5 mm. long, with sutures prominent ex- 

 ternally, opening along the ventral suture and first at tin. 

 Flowers and pods ascending, the former rather narrow, loosely 

 racemose, widely spreading, rather few on the upper third of 

 peduncle, about 2 cm. long. Banner oblong-ovate, gently arched 

 to 60 to 80 degrees at c:ilyx tips, with sides reflexed to midrib 

 most below, with tip n'tohed. 'Vings oblong, oblique, 1 cm. long, 

 obtuse, concave to keel, with tips touching beyond it, longer than 

 keel and much shorter than banner. Keel Ll^de about 3 n: n. 

 Petals thin and with exserted claws. Calyx tube narrowed be- 

 low to the lower corner where it is attached by a slight angle 

 to the pedicel, somewhat fleshy below, cleft deeper above, later- 

 ally flattened; teeth triangular-subulate. Bracts about 2-3 mm. 

 long, triangular-subulate to ovate. Pedicels in fruit stout and 

 woody, about 3 mm. long. Peduncles stout and strict, 1.5 3 dm. 

 long including the flcr | rrxhis twice rs I j ?s t'^e leaves. Mid- 

 dle leaves the longest. Leaflets all jointed to petiole, thick and 

 I'^.ithery and fle.sh-, .it least some of the^i'. linear. Proper peti- 

 oles short l.ut r- cH T of leaf and tanering and 1-1.5 dm. lonq. 

 Stems straggling ^ ward, not very stout, sulcate, branched below. 

 1-2 feet high, flexuous. Internodes much shorter than the leaves. 

 Stipules rigid, green, reflexed, small. Pubescence minute, ashy. 

 Alkali-loving plants of the Lower Temperate life zone. Pachypodes. 

 2AB. Pods splitting to the middle from the tip along both sutures, 

 sessile when fresh (the drying of the flesh makes it seem a 

 little stipitate.) lowers rurple-tipped, in rather long and very 



