230 University of California Publicaiions in Botany [Vol. 10 



LocaJifics. — Fort Ross, Sonoma County, Heller 6597 (calyx teeth 

 short-triangular) ; south slope, Montara Mountains, San Mateo 

 County. Dudley, March 17, 1900; Lighthouse Point near Pacific Grove, 

 Ahrams 5621, April 8, 1916 (type specimen for Syrmaiium ahramsi 

 Noddin MS.) ; Pescadero Ranch, Monterey County, Brewer 671, "fine 

 match for type of Hosackia cytisoides Benth. " Jepson '06, Herb. 

 Benth. ; Point Pietras, Greene, June 10, 1887 ; Pacific Grove in pine 

 Avoods, Ilcller 6816, distributed by Heller as //. sylvestris, "undoubted 

 Hosackia cytisoides" Jepson '06, Herb. Benth.; Pacific Grove along 

 the beach. Heller 6643 ; Seventeen-Mile Drive, Monterey, I. McGuire 

 in 1917 ; Monterey, Jepson, August 8, 1896 ; Monterey, Davy 7223 ; 

 Cypress Point, Monterey, Eastwood 74; sand dunes, Carmel, Clemens 

 in 1919; near Carmel Bav, Dudley, April 4, 1894; back of dunes at 

 Carmel, Hall 10065; Carmel, Ottleij 1247, 1251, 1289; Carmel Hill, 

 Davy 7525 ; Big Sur, Davy 7445 ; Little Sur, Davy 7873 ; Lucia, Hall 

 9984; near Gorda, K. Brandegee, June 11, 1909; San Simeon, K. 

 Brandcgee, June, 1888; Mill Creek, Santa Lucia Mountains, Jepson 

 2611; Santa Lucia Mountains, Jepson 1667, "good match for type" 

 (Hosackia cytisoides Benth.), Jepson '06, Herb. Benth.; Big Creek, 

 Santa Lucia Mountains, K. Brandegee. 



References. — Lotus benthami Greene, Pitt., vol. 2, 1890, p. 148. 

 Hosackia cytisoides Benth., Trans. Linn. Soc, vol. 17, 1837, p. 366, 

 type from California, Douglas. Syrmatium cytisoides Greene, Bull. 

 Calif. Acad., vol. 2, 1886, p. 147. Hosackia cytisoides var. ruhescens 

 Nutt. in T. and G. Fl., vol. 1, 1838, p. 324, type loc. near Santa 

 Barbara. 



24. L. haydonii Greene (pi. 78, figs. 1-6). Low thickly-branched 

 perennials with leaves and flowers reduced in size and number until 

 the plant seems to be little more than a mass of slender stiff green 

 branches; few appressed hairs on the stem, somewhat more on the 

 growing tips and calyces; leaves ternate, the tiny leaflets borne on a 

 short petiole; leaflets elliptical, obtuse, 2.5 mm. long or less; flowers 

 solitary or occasionally in pairs, slightly over 5 mm. long ("2 mm." 

 according to Orcutt), borne on short peduncles; calyx one-half as 

 long as the flower, with broadly linear teeth shorter than the tube; 

 legume curved, 1-seeded, 5 mm. long ; seed slightly curved. 



Range exceedingly limited. Reported only from Mountain Springs 

 and caiions in or near Colorado Desert, San Diego County. Dis- 

 tribution Map 8. April. Careful field observations of this species 

 should be made to determine whether or not it intergrades with L. 

 scoparius. The description given above is taken from Orcutt 's type 

 of Hosackia haydoni, but does not agree with Orcutt 's diagnosis as 

 to size of flower. Macbrides' diagnosis of L. spencerae does not differ 

 essentially from the description above and his type is clearly con- 

 specific with the specimens cited below. 



Localities. — Colorado Desert canons, Orcutt, April, 1889 (type of 

 Hosackia haydoni Orcutt) ; stony desert slopes, Movintain Springs, 

 Colorado Desert, Spencer 561 (type of Lotus spencerae Macbr.) ; 

 Mountain Springs, San Diego County, Yalcntien; grade east of INIoun- 

 tain Springs, L. M. Newlon 369; Ilansen's Ranch, Baja California, 

 Orcutt (pod curved but not arcuate, resembling a short fruit of 

 L. scoparius). 



