PEA FAMILY 555 



apex ; leaflets 5-6, broadly obovate, rounded at apex, cuneate at base, 12-25 mm. long ; peduncles 

 2-4 cm. long; racemes 1.5-3 cm. long; calyx densely white-villous ; corolla 12 mm. long, 

 scarcely surpassing the lanceolate-subulate calyx-lobes, the standard whitish, the other petals 

 purple ; pod oblong-ovoid, the body 6 mm. long, the beak a little longer. 



Gravelly soil, Upper Sonoran and Arid Transition Zones; northern Inner Coast Ranges and the southern 

 Sierra Nevada, California, to northern Lower California. Type locality: "at McGinnis* Ranch, near head of 

 Salinas River," California. 



8. Psoralea castorea S. Wats. Beaver Psoralea. Fig. 2757. 



Psoralea castorea S. Wats. Proc. Amer. Acad. 14: 291. 1879. 

 Lotodes castoreum Kuntze, Rev. Gen. PI. 194. 1891. 

 Pediomelum castoreum Rydb. N. Amer. Fl. 24: 22. 1919. 



Perennial from a deep-rooted fusiform taproot, producing usually a single stem each season ; 

 underground portion of stem slender, glabrous, bearing 2 or 3 scarious stipular bracts, that above 

 ground erect, 2-3 cm. high, densely clothed with leaves and racemes, and sometimes producing 

 one or two short branches, densely silvery-silky-pubescent. Leaves 4-5-foliolate ; petioles stout, 

 5-12 cm. long; leaflets broadly cuneate-obovate, rounded to subcordate at apex, 15-30 mm. long; 

 peduncle 2-4 cm. long; racemes dense, 2-3 cm. long; calyx 15 mm. long, the lower lobe oblanceo- 

 late, the others subulate ; corolla scarcely exceeding the calyx. 



Dry sandy deserts, Lower Sonoran Zone; near Barstow, Mojave Desert, California, to southern Utah and 

 northern Arizona. Type locality: "Between Beaver Dam, Arizona, and St. Thomas, Nevada," according to the 

 collector (Palmer, Amer. Nat. 12: 601). April-May. 



12. AMORPHA L. Sp. PI. 713. 1753. 



Shrubs, with gland-dotted and more or less heavy-scented foliage. Leaves odd-pin- 

 nate, with entire petiolulate leaflets and setaceous stipules. Inflorescence a spike-like 

 raceme; bracts narrow, deciduous. Calyx turbinate, 5-lobed, slightly oblique. Standard 

 petal only one present, the others wanting, purple, blue or white. Stamens 10, the fila- 

 ments united at the base only. Style slender, bearded; ovary 2-ovuled. Pod 1-2-seeded, 

 indehiscent, oblique, rounded and broader at the apex. Seeds oblong or slightly curved. 

 [Greek, meaning deformed, in reference to the corolla.] 



Branchlets and leaf-rachis with prickle-like glands; calyx-teeth triangular-lanceolate, over half the length of the 



tube. 1. A. calif ornica. 



Branchlets and leaf-rachis without prickle-like glands; calyx-teeth short-triangular. 2. A. occidentalis. 



1. Amorpha calif ornica Nutt. California False Indigo. Fig. 2758. 



Atnorpha calif ornica Nutt. in Torr. & Gray, Fl. N. Amer. 1 : 306. 1838. 



Shrub 1-3 m. high, the branches pubescent and beset with scattered prickle-like glands. 

 Leaves 1-2 dm. long, ascending ; petioles about 1 cm. long, these and the leaf-rachis pilose and 

 with scattered prickle-like glands; leaflets 11-25, broadly oval to elliptic, rounded at both ends 

 or refuse and mucronate at apex, 1-3 cm. long, pilose on both surfaces ; racemes 5-20 cm. long, 

 the rachis pilose ; calyx 5-6 mm. long, densely pilose, 10-grooved ; lobes lanceolate, nearly equal- 

 ing the tube ; standard reddish purple, obovate-cuneate, 5 mm. long ; pod curved on the back, 

 8 mm. long, 3 mm. wide, puberulent and conspicuously glandular-dotted. 



Wooded slopes, Upper Sonoran and Transition Zones; California Coast Ranges from the Santa Lucia 

 Mountains to the Santa Ana and San Bernardino Mountains, southern California. Type locality: Santa Barbara, 

 California. May-July. 



Amorpha californica var. hispidula (Greene) Palmer, Journ. Arn. Arb. 12: 163. 1931. {Amorpha his- 

 pidula Greene, Fl. Fran. 14. 1891.) This variety has the conspicuous prickle-like glands but is less pubescent 

 or even glabrous and the calyx-lobes are about half the length of the tube. Shasta and Placer Counties, to Napa, 

 Marin, and Monterey Counties, California. Amorpha californica var. napensis Jepson (Man. Fl. PI. Calif. 556. 

 1925) is the glabrate form of this variety. 



2. Amorpha occidentalis Abrams. Western False Indigo. Fig. 2759. 



Amorpha occidentalis Abrams, Bull. N.Y. Bot. Gard. 6: 394. 1910. 



Shrub 2-3 m. high, the flowering branchlets minutely strigose. Leaves ascending, 1-2 dm. 

 long, the rachis sparsely pubescent ; leaflets oval to oblong, 2-4 cm. long, firm, sparsely strigose, 

 usually rounded and mucronate at apex, acute at base ; racemes solitary or 2-4 together, 1-2 dm. 

 long, the rachis sparsely pubescent ; calyx 3 mm. long ; tube strigose to glabrate ; lobes triangu- 

 lar, densely short-villous, acute or the upper obtuse; standard about 5 mm. long, violet-purple; 

 pod 6 mm. long, 2.5 mm. wide, somewhat curved on the back, glabrous, with a few conspicuous 

 glandular dots toward the apex. 



Stream banks and canyons, Upper Sonoran Zone; San Bernardino County to San Diego County, California, 

 and adjacent Lower California, east to New Mexico, Chihuahua, and Sonora. Type locality: San Diego River, 

 near the San Diego Mission, California. May-July. This species has been confused with A. fruticosa L. of 

 eastern North America. 



13. DALEA Juss. Gen. 355. 1789. 



Herbs, shrubs, or small trees. Leaves odd-pinnate or rarely entire, usually glandular- 

 punctate; stipules present, minute. Flowers small, purple, white or yellow, in spikes or 

 spike-like racemes. Calyx -teeth nearly equal or the upper somewhat broader. Standard 

 usually cordate or auriculate, clawed, generally exceeded by the wings and keel. Stamens 



