1923] Ottley: A Revision of the Californian Species of Lotus 225 



Torr. Club. vol. 33, 1906, p. 144. Lotus trispermus Greene, Erythea, 

 vol. 1, 1893, p. 258, type loc, Lancaster, Davidson. Anisolotus tri- 

 spermus, Woot. and Stand., Contrib. U.S. Nat. Herb,, vol. 16, 1913, 

 p. 135. 



19. L. nuttallianus Greene fpl. 75, figs. 1-8). Prostrate annuals 

 with long slender branches; leaves, calyces, and young stems thinly 

 hirsutulous, older stems glabrate ; largest leaves 2 cm. long, with 5, 6, 

 or 7 leaflets, cuneate-oblanceolate, acute or obtuse ; umbels several- 

 flowered ; peduncles exceeding the leaves ; bract when present mostly 

 of one leaflet ; flowers 5 to 7 mm. long ; calyx less than one-half as 

 long, with teeth triangular and about one-third the length of the tube 

 or shorter ; ovary in fruit slender, arcuate, constricted between the 

 two seeds, much exceeding the calyx and terminated by a long involute 

 glabrous style. 



Occurring in the southern part of the state near the sea and south 

 into Lower California. Range limited. Distribution Map 7. April- 

 June. 



Localities. — Santa Barbara, NuttaJl (label reads *DrepanoJol)us 

 prostratus), doubtless an incorrect locality; Del Mar, San Diego 

 County, Jepson 1602a, "an excellent match of Nuttall's type of 

 Hosackia prostrata." Jepson '06, Kew Herb.; Del Mar, Eastwood 

 2967; Del Mar, T. S. Brandegee, May 16, 1894; North Island, 

 Coronado, Chandler 5170; Coronado Beach, Berg, September 3, 1904; 

 Coronado Beach, K. Brandegee, June 2, 1889 ; San Diego, Eastwood 

 9272 ; near the sea, San Diego, Stokes in 1895 ; Chula Vista, near San 

 Diego, Collins and Kempt on 52 ; Tia Juana AVash, San Diego County, 

 Hall 3958; Tia Juana, Ahrams 3486j. 



References. — Lotus nuttallianus Greene, Pitt., vol. 2, 1890, p. 

 150. Hosackia prostrata Nutt. in T. and G. Fl., vol. 1, 1838, p. 325, 

 type loc, "Santa Barbara" (?), Nuttall. Syrmatium prostratum 

 Greene, Bull. Calif. Acad., vol. 2, 1886, p. 147. ?Hosackia decumhens 

 var. glabriuscula Hook and Arn., Bot. Beech., 1832, p. 137, according 

 to Watson's Index to N. A. Bot., 1878, p. 226. 



20. L. hamatus Greene (pi. 75, figs. 9-17), Very similar to L. 

 nuttaUianus Greene in general aspect, but differing in the following 

 technical characters: flowers 3 to 4.5 mm. long, in sessile or nearly 

 sessile umbels ; calyx one-half the length of the flower ; wings not 

 longer than the keel ; style appressed-hairy. 



Occasional in sandy soils of Los Angeles, San Diego, San Bernar- 

 dino and Riverside counties, on Santa Catalina Island, and in Lower 

 California. Distribution Map 7. March-June. 



The plants are more herbaceous, with pubescence less appressed 

 and somewhat more abundant than in L. nuttallianus Greene. 



Localities. — Coronado, San Diego County, Geo. B. Grant 6831 ; 

 vicinity of San Diego, Spencer 91 ; San Diego, K. Brandegee, April, 

 1906; Vicinity of San Diego, Wright 37, 132; San Diego, T. S. 

 Brandegee 1619 ; ]Mission Hills, San Diego, Abrams 3403 ; mesa near 

 San Diego, Stokes in 1895 ; Jamacha, Chandler 5271 ; Descanso, T. S. 

 Brandegee, May 24, 1906; Swetzer Caiion, Alderson 2217; Menifee, 

 Riverside County, M. A. King in 1893; Palm Springs, Peirson 714; 



