218 University of California Puhlications in Botany [Vol. 10 



Jrpson li)()(); near AVeaverville, Yates 286; Willits, Jepson 2499; Fort 

 Bragg, Davy 6564; near Fort Bragg, Ottlcy 1505; near I'kiah, Mendo- 

 cino County, Bolander 3920 ; near Comptehe, Vt^dker 256 ; Los 

 Giiilicos, Michener and BioleUi, May 22, 1892; near St. Helena, Napa 

 River basin, Jepson in 1893 ; Howell Mountain, Napa River basin, 

 Jepson, April24, 1893; Bodega, Chandler 651a ; Olema, Marin County, 

 Jepson, March 28, 1897; Fairfax, Marin County, Ottley 339; Mt. 

 Tamalpais, Jepson, June 11, 1891; Mill Valley, Ottley 154; Sausalito, 

 Ottley 406; near "Little Grizzly," Berkeley, Y/Y/r/; 770; Fish Ranch, 

 Contra Costa County, Jepson, June 9, 1891 ; Pilarcitos, Davy 1045, 

 1156 ; foothills near AVellesley Park, San Mateo County, Ahrams 2414 ; 

 summit of tlie first ridge west of Los Gatos, Heller 7374 ; on Salinas 

 road near Del Monte, Heller 6774; Pacific Grove, Heller 6671; near 

 Monterey, Brewer 620 ; Santa Lucia Mountains, H(dl 10005 ; Paso 

 Robles, Santa Lucia Mountains, Barher 1024 ; Santa Susana Moun- 

 tains, Brewer 205; Evey Caiion, San Antonio Mountains, Johnston 

 1277 ; Kaweah River basin, Hopping 172 ; northeast of Pinehurst, 

 Ottley 1393; Jerseydale, Mariposa County, Hedl 8846; Blochman 

 Ranch, Mariposa County, Eeistwood 4209 ; Yosemite Valley, Ahrams 

 4482; foot of Yosemite Falls, Hall 9120; near French Flat. Tuolumne 

 County, Ferris 1548; Gwin JVtine, Calaveras County, Jepson 1772, 

 1809; ^lokelumne Hill, Calaveras County, Blaisdell; vicinity of lone, 

 Amador County, Braunton 1195; Agricultural Station, Amador 

 County, Hansen 13 ; El Dorado County, Rattan 1866 ; Marysville 

 Buttes, Sutter County, Heller 11271 ; grade betAveen Clear Creek and 

 Paradise, Butte County, Heller and Brown 5531 ; Dibble Creek, 

 Tehama County, Jepson, April 29, 1899. Form with sinuate, larger 

 legumes: Rattlesnake Mountain. Davy and Blasdale 5335; vicinity 

 of Eureka, Tracy 1750; near Red 13]ufi:', Tehama County, Heller 

 12335; Little Chico Creek, Austin 702; near Mt. Diablo, Brewer 

 1173; Julian, San Diego County, T. S. Breindegee, June 14, 1894; 

 Santa Cruz Island, T. S. Breindegee in 1888. 



References. — Lotus MicRANTHrs Benth., Trans. Linn. Soc, vol. 17, 

 1837, p. 367. Hosackia parvifiora Benth. in Lindl. Bot. Reg., vol. 15, 

 1829, under t. 1257, type from northwest coast of North America, 

 Douglas. Anisolotus parviflorus Heller, ]\Iuhl., vol. 3, 1907, p. 100. 

 According to Greene, Hosackia ndcroph^illa Nutt. in T. and G., Fl. 

 N. A., vol. 1, 1838. p. 326. 



15. L. americanus Bisch. (pi. 74. figs. 1-7). Erect or ascending 

 annuals, 1.5 to 4.5 dm. tall (or taller), w(41 branched; herbage villous, 

 pilose or nearly glabrous ; large leaves on the main branches 2.5 cm. 

 long, other leaves 1 cm. long or less; leaflets typically 3 (some of the 

 largest leaves on vigorous plants often Avith 4 or 5 leaflets, tips of 

 branches occasionally bearing leaves of but one leaflet), terminal leaflet 

 oblong or elli]-)tical, acute, petiolulate, the two lateral leaflets asym- 

 metrically ovate, nearly sessile and attached near or at the base of 

 the leaf; peduncles exceeding the leaves, often very mucli reduced on 

 plants flowering late in the season ; bract of one leaflet ; flowers solitary 

 (rarely in tAvos), 6 to 9 mm. long; calyx tube short, turbinate-cam- 

 panulate, the teeth narrowly triangular-subulate, nearly equaling the 

 corolla in length ; corolla cream-color or Avhite with l)anner deeply 



