PLANTS FROM BAJA CALIFORNIA. 171 



shorter and remote: inflorescence in simple racemes or the 

 few ? heads sometimes in short, branching clusters: in- 

 volucres of the slender-pedicellate, 30-40-flowered 6 heads 

 broadly companulate, 5-10-cleft, not surpassing the flowers; 

 palea3 of the receptacle reduced to mere threads: fruiting 

 involucre ovoid, 5 mm, long, 2-(lowered armed with subu- 

 late, hooked, rather weak spines Avhich are closely aggre- 

 gated about the very similar but shorter, incurved beaks. — 

 Magdalena Island. 



Franseria acuminata. Suftrutescent nearly glabrous, 

 2 feet high, branching above: leaves mostly alternate, 

 bright green, very sparingly strigose-pubescent, 2-3 inches 

 long, 1-2 inches wide, ovate-lanceolate in outline, divided 

 nearly to the mid-rib into 3-8 pairs of unequal lanceolate- 

 acuminate lobes, the terminal portion long-acuminate: in- 

 florescence racemose-paniculate: involucre of 6 heads o-8 

 dentate, half the length of the few (10-20) flowers; paleje 

 of the receptacle minute, somewhat clavate: fruiting in- 

 volucres 5 mm. long, 2-flowered, clavate-ovoid, with few 

 very short incurved spines in two rows, and a single beak. 

 — Purisima. 



This species is another of the intermediate forms which 

 too closely connect the genus with Ambrosia. 



Franseria Bryanti Curran. Yery abundant in some lo- 

 calities. — Santa Margarita Island to Calm alii. 



Franseria dumosa Gray. — El Llano de San tana. 



Franseria divaricata. Sufi*rutescent, a foot or more 

 high, much branched, younger growth white -pubescent 

 and woolly in the axils :^ leaves minutely strigose-pu- 

 bescent, 1-lJ inches long and broad, on petioles of half 

 their length, deeply 3~5-lobed, the lobes doubly and 

 often deeply serrate or dentate, somewhat reniform at base 

 but often decurrent upon the petiole in several short lobes: 

 inflorescence loosely paniculate; terminal (S) racemes flex- 

 uous, heads distant; involucres 20- 30-flow^ered rotate, 5-10- 



