lOo 



T t Mature f rint scssifr. 

 ;|; Leaves pa/iiiatc/v i//vii/ci/ (muYwuWd in .S. iiiarih'/ra ). 



5. S. laciniata Hook. iS: Aim. Hot. Bccchcy, 'U7. Stems 

 more or less branching, (> to 18 inches liigh, from a tliickened 

 rootslock: leaves mostly palmately 8 to a-parted, the divisions 1 to 

 2-pinnatifid, segments laciniately toothed, the teeth spinoselv 

 pointed: umbel 8 to a-rayed, with involucre of leaf-like bracts, and 

 involucels of lanceolate spinoscly pointed bractlets; flowers yel- 

 low, the sterile ones on long petlicels: fruit somewhat naked 

 below, more prickly above, 1 1/< lines long: seed-face ileeply sul- 

 cate, somewhat involute. (Fig. 108. )— ■5". niaHcaitlis Hook. & 

 Arn. 1. c. 



Hills aud woods, California, from San Diego to HiiniboR county; also 

 in \. Oregon (.Vr.s. R. TV. SummerH). Fl. April and May. 



We find in herbaria considerable confusion between this species and 

 S. bipinnotifidii, & good ilea\ of .S. Utciniuhi having been distributed as 

 S. bipinmtfifidct, as, for instance, Prhujh ol ]SS2, and Johcw :514'J. The 

 palmately parted leaves, spinoselv pointed teeth and bractlets, yellow 

 Hewers, less prickly fruit, and involute sulcate seed-face of S. laciiiiafa, 

 are well set off against the pinnately-paited leaves, merely acute or but 

 slightly pointed teeth and bractlets, purple flowers, densely prickly fruit, 

 and broadly concave i-ejitrally ridged seed- face of .S'. hipinnatifida. Nevin 

 & Lyon, in their exploration of San Clemente Island (off S. California), 

 collected this species with pedicelled fruit. The same form was also col- 

 lected on Catalina Island by Baker and Dall of the I'. S. Coast Survey, and 

 on Guadalupe Island by Palmer. In every other respect these plants are 

 identical with ,S'. hn-iiiidln. 



(). S. Nevadensis Watson, Proc. Am. Acad. xi. 18U. Stem 

 slender, sometimes \cr\- short, si.nple or branching near the base, 

 a foot or less high: leaves ternate, the divisions oblong-ovate, 8 to 

 a-lobcd; the segments lobed or toothed: umbel with about 5 rays, 

 which are sometimes branched and become i< to i ]4 inches long 

 in fruit, involucre of pinn.Uitul leaf-like bracts, and Involucels of 

 small oblong acute bractlets: flowers yellow, the sterile ones pedicel- 

 led: fruit prickly all over, 1 1^ lines long: seed-face plane. 

 (Fig. 109.) 



In dry sandy soil Ml- damp places, California (/•Vem (>/(/'.•< E.rprd.), So- 

 noma county (Coiujdun), Placer county ( C. F. Sonne), Plumas county {Mrx. 

 Anus, Mrs. Austin. Ltnnnon), Siskiyou county (Oreen 741); Oregon, 

 Siskivou Mis. ilhiid, rsiHi). near Hood lUver and the Dalles ( /fojr^?/^. 



