NATURAL SCIENCES OF PHILADELPHIA. 349 



p. (79) 23,) one of Dr. Newberry's collction from Sitgreaves' Pass, also 

 Thurber's, 243 and 307, from New Mexico, and perhaps Wright's, 1357 ; but 

 the last is doubtful. 



12. H. puberula, Benth. 1. c; Gray, PL Wright, 1, p. 50; ^orr. in Pacif. 

 R. R. Surv. 7, t. 4 (bot.) Minutely appressed-puberulent. Leaflets 3 6, 

 on a more developed petiole or rhachis, linear, lanceolate, or the lowest 

 oblong. Teeth of the calyx attenuate, as long as the tube. Mexico, Arizona 

 to S.W. Texas. 



ff Peduncles seldom as long as the leaf, often shorter than the solitary 

 flower, some of them reduced to nothing ; the short pedicel, with the pair of 

 black glands at the articulation, arising directly from the axil. 



13. H. Wrightii, Gray, PI. Wright, 2, p. 42. Cinereous- puberulent, 

 bushy-branched, very leafy, Aspalathus-like ; the 3 5 leaflets (the lowest 

 oblong, the rest filiform-linear) crowded upon the apex of a barely perceptible 

 petiole, appearing therefore as if palmate and sessile. Teeth of the calyx 

 setaceous-subulate, about the length of the tube. Flower pretty large. 

 New Mexico. 



** Vera;. Leaves obviously pinnate ; the (5 21) leaflets distributed 

 along a more or less elongated rhachis. Peduncles bearing a few many- 

 flowered umbel, which is usually subtended by a 1 5-foliolate bract : this, 

 however, is occasionally wanting or represented by a leaf low down on the 

 peduncle. Vexillum on a slender claw, more or less distant from those of 

 the other petals. Root perennial, except in one species. 



f Peduncles (elongated) 2 1-flowered, occasionally 1-flowered : pedicels 

 very short. Stipules scarious, but small or minute. Claws of the (yellow) 

 petals a little exserted out of the tube of the calyx : keel broadly dilated up- 

 wards, very obtuse. 



14. H. lathyroides, Durand & Hilgard, in Pacif. R. R. Snrv. 5, part 3, p. 

 6, t. 3. Low, cinereous-puberulent. Leaflets 5 7, not crowded, linear- 

 lanceolate, acute at both ends. Bract unifoliolate or sometimes wanting. 

 Teeth of the calyx broadly subulate, shorter than the tube. California : 

 San Joaquin River, Heermann ; Los Angeles, Wallace. 



15. H. angustifolia, G. Don. ex Benth. H. Mexicana, Benth., in Linn. 

 Trans. H. longipes, Nutt. ined. Slender. Leaflets 5 9, obovate or linear, 

 short, often canescent beneath. Bract trifoliolate at the apex of the 1 2- 

 flowered peduncle. Teeth of the calyx slender, nearly as long as the tube. 

 Mexico. 



ft Peduncles umbellately many-flowered, mostly shorter than the leaf, 

 bearing the bract below its apex, or a leaf lower down which represents the 

 bract. Stipules scarious or in one species foliaceous. Flowers rather small, 

 dull-colored, greenish-white or yellowish with purple, the keel slightly in- 

 curved, very obtuse, moderately shorter than the wings. Calyx-teeth not 

 half the length of the tube. Leaflets 9 21, oval or oblong. 



16. H. iscana, Torr. in Bot. Whippl. Exped. Pacif. R. R. Surv., 4, p. 79, 

 (23,) t. 4. Low, canesceutly very villous throughout; the bract near the 

 apex of the peduncle, mostly 5-foliolate. Yuba, California, Dr. Bigelow. 



17. H. stipularis, Benth. H. macrophylla, Kellogg, in Proc. Calif. Acad., 

 2, p. 123 and 126, fig. 40. Rather tall and stout, the upper part of the stem, 

 petioles, peduncles, &c. villous, the leaflets glabrate. Stipules large and 

 foliaceous, or the upper sometimes smaller and almost scarious. Peduncle 

 bearing a 3 9-foliolate leaf in place of a bract, much below the umbel. Cali- 

 fornia. 



1863.] 



