PLANTS FROM BAJA CALIFORNIA. 169 



both by the margins and midrib: heads axillary or in small 

 clusters terminating the branches, nearly cylindrical, 5-7 

 mm. long, with 3-5 ray and as many disk flowers, the 

 u}3per leaves passing into the outer ciliate-margined and 

 green-tipped bracts: akenes hispid, those of the ray appar- 

 ently infertile, oblong and twice the length of those of the 

 disk: pappus of numerous sordid, scabrous bristles. — ElRo- 

 sario. 



SoLiDAGO, sp. — Santa Maria. 



SoLiDAGO, sp. Only immature specimens of these species 

 of Solidago could be found so early in the season. — El 

 Kancho Yiejo. 



BiGELOViA DIFFUSA Benth. — Magdalena Island. 



BiGELOViA YENETA Gray. var. — Magdalena Island, Santa 

 Maria. 



BiGELOViA BRACHYLEPis Gray. — El Eosario. 



PsiLACTis CRISPA. A foot high branching from the 

 base, very glandular and leafy: leaves sessile, one lutlf to 

 one and a half inches long, linear oblong, irregularly and 

 incisely dentate, the dentations abruptly mucronate, heads 

 terminating the branches, half an inch high and an inch in 

 breadth; rays about 30, purple: inner involucral scales with 

 green somewhat spreading tips: corollas filiform, slightly 

 ampliate above: pappus of ray flowers none, of disk flow- 

 ers numerous bristles shorter than the corolla and of un- 

 equal length : akene silky pubescent. — This plant seems 

 to be perennial, and much resembles the Macliarantliera 

 section of Aster. — Alkaline soil San Joaquin, San Ignacio. 



Aster Palmeri Gray (?). Foliage only. — San Gregorio. 



Aster exilis Ell. — Comondu. 



Aster spinosus Benth. Very stout and rigid, flowers an 

 inch in diameter. The stout spinose branches are often 

 themselves branched, giving them the appearance of three- 

 pronged spines. — Common about San Gregorio. 



