PEA FAMILY 339 



Var. hansenii Jepson var. n. Calyx-lobes with stipitate glands. — (Calycis lobae glandulis 

 stipitatis.) — Sierra Nevada foothills: Amador Co. (West Point bridge, 2300 feet., Hansen 1500, 

 type). Also, apparently, in Tulare Co. and Plumas Co. 



Eefs. — PsoRALEA DOUGLASil Greene, Erythea 3:99 (1895); Jepson, PI. "W. Mid. Cal. 295 

 (1901), ed. 2, 233 (1911), Man. 560 (1925). P. macrostachya Lindl. Bot. Eeg. t. 1769 (1835), 

 type from Cal., Douglas; not P. macrostachya DC. (1825). Eoita douglasii Eydb. N. Am. Fl. 

 24:11 (1919). Var. hansenii Jepson. 



6. P. hallii Jepson comb. n. Stems 2 to 3 feet high, these and the petioles 

 minutely and sparingly puberulent; leaflets rhombic-lanceolate, mucronate, gla- 

 brous (but conspicuously glandular), l^/o to 3 inches long; peduncles I/2 to 3^/2 

 inches long, shorter than the leaves; racemes very dense, 1 to 1% inches long; 

 bracts abruptly acuminate or lanceolate-tipped, thickish, persistent, keeled, some- 

 what fluted and undulate-margined, conspicuously dotted with large oil-glands, 

 sparsely puberulent, about % as long as the flowers; calyx nearly glabrous, con- 

 spicuously dotted with large oil-glands, 6^ to 7I/2 lines long, its tube prominently 

 10-ribbed, the lower tooth exceeding the others and the corolla; corolla yellowish, 

 the keel purple-tipped; tenth stamen adnate for about Y2 length of column; ovary 

 brownish-pubescent. 



Butte Co. (Humboldt Road, 3500 feet). July. 



Var. media Jepson var. n. Leaflets rhombic-ovate, bluntish, minutely puberulent above; 

 bracts round-ovate, abruptly short-acuminate, neither undulate nor keeled, caducous, nearly as 

 long as the flowers ; calyx a little more hairy than in the species, its lower tooth thickly sprinkled 

 with saucer-shaped glands, the upper teeth with rather few glands or none ; tenth stamen adnate 

 % to 1 line. — (Foliola rhombi-ovata, obtusiuscula, supra minute puberula; bracteae rotundo- 

 ovatae, abrupte acuminatae, caducae, flores fere aequantae; calyx paulo pubescentior.) — Priest 

 Hill, Tuolumne Co., A. L. Grant 824 (type). 



Eefs. — Psoralea hallii Jepson. Hoita Jiallii Eydb. N. Am. Fl. 24:10 (1919), type loc. 

 "Humboldt road, Butte Co.," Hall 9825. Var. media Jepson. 



7. P. macrostachya DC. Leather Root. Stems in clusters, erect, 4 to 12 

 feet high; herbage variable, nearly glabrous, villous-pubescent or tomentose; leaf- 

 lets rhombic-ovate, sometimes ovate-lanceolate, 1 to 3 inches long; peduncles com- 

 monly much exceeding the leaves; spikes broadly cylindrical, silky -villous with 

 white hairs, mostly 9 to 10 lines broad; calyx 3 to 5 lines long, the lower tooth a 

 little the longest, exceeding or equaling the petals, the 4 upper teeth short, broadly 

 lanceolate; corolla purple, the lower portion of banner dull greenish; pods hairy, 

 ovate-oblong, acute, flattened, 3 to 4 lines long. 



Along the rivers and larger streams in the valleys, following the canon bottoms 

 in the mountains, and common in marshes and moist meadows, always in the richest 

 soils, 5 to 3000 feet : Shasta Co. ; Coast Ranges from Mendocino Co. to Santa Clara 

 Co. ; delta region of the Great Valley ; coastal Southern California. South to Lower 

 California. July-Oct. 



Field note. — Of our native Psoraleas, P. macrostachya is the most common and most widely 

 distributed. It appears, however, to be absent from or at least rarely collected or observed in 

 the Sierra Nevada foothills, and there are few records for the South Coast Eanges and for the 

 northern part of the North Coast Eanges. The roots furnished to the Pomos and other native 

 tribes a tough fibre, which was regarded by the white settlers as the equivalent of hempen rope 

 for toughness. The plants grow in spots of rich soU, doubtless enriched more or less by the 

 plant itself, and are difficult to clear from land, even with a mattock, wherefore "California 

 Hemp" of the ranchmen. It is the "Mootka" of the Pomo tribe. See V. K. Chesnut, Contrib. U. S. 

 Nat. Herb. 7:358, for uses by the Concow and Yokia tribes. 



Locs. — Coast Eanges: Ukiah Valley, Jepson 7641; Bachelor Valley, Lake Co., Jepson; 

 Alexander Valley, Sonoma Co., Jepson 9483; Putah Creek, Winters, Jepson 13,594; Vaca Mts., 

 Jepson 10,575 (Weldon Canon), 13,592 (Gates Caiion) ; Howell Mt., Jepson 1734; Mt. Tamalpais, 

 Chesnut; Joaquin Sprs., Mt. Hamilton (Erythea 1:80). Great Valley delta region: Suisun 

 Marshes, Jepson 13,593; lower Sacramento Eiver islands (Erythea 1:243); Bouldin Isl., lower 

 Mokelumne Eiver, K. Brandegee. S. Cal.: Ojai Valley, Olive Thacher; Sespe Creek, Ventura 

 Co., Mum 9396; Santa Monica, Barber 15; Los Angeles, Braunton 668; Pasadena (McClatchie, 

 Fl. Pasadena, 639) ; San Bernardino Valley, Parish; Eiverside, Jepson; Cold Water Canon, 



