ISOOOMA. 171 



I. LBUCANTHEMIFOLIA. Branches stout, tortuous, leafy with 

 large foliage up to the ample compound cyme of larije he.uls, 

 scaberulous and viscid: leaves 2 inches long, broadly obhiuoco- 

 late, obtuse, coarsely and closely serrate-toothed, sciiberulous 

 above, somewhat villous-arachnoid and viscid beneath : heads 

 glomerate in twos and threes at the ends of the branches and 

 branchletsof the cyme, large, with broadly subturbinate involu- 

 cres maay-bracted, the bracts with broad obtuse green and glandi- 

 ferous tips: achenes not seen. 



At Warren, in the Mountains of San Diego Co., Calif., 21 

 Oct., 1889, 0. R. Orcutt. 



I. EKBMOPHiLA. Branches IJ feet high, stout, glabrous, 

 parted in the middle to form a loosely fastigiate panicle of 

 cymose corymbs : lower leaves spatulate-oblanceolate, 2 inches 

 long, obtuse, remotely subserrate-toothed, glabrous, punctate, 

 those of the panicle all reduced, linear, entire : involucres not 

 small, turbinate, their bracts glabrous, not viscid, subquadrate- 

 oblong, obtuse, only inconspicuously and shortly green-tipped, 

 the tips of the inner with a large low gland on the back. 



Southwestern part of the Colorado Desert, Calif., 1 Nov., 

 1890, C. R. Orcutt, n. 2,223 as in U. S. Herb. 



I. oxTPHTLLA. Plant evidently large, the long branches 

 striate, loosely villous-hairy, leafy up to the ample compound 

 cyme of rather large heads: leaves 1 to li inches long, linear- 

 lanceolate, entire, very acute, of thin texture, glabrous, light 

 green : involucres broadly turbinate, glabrous, not viscid, the 

 green herbaceous tips of the bracts large, elliptical : limb of 

 corolla remarkably short. 



Jamul Valley, back of San Diego, Calif., Bdw. Palmer, 1875, 

 the species very strongly marked, and not otherwise known. 



I. MICEODONTA. Branches stout, scabrous, densely leafy up 

 to the ample cymose panicle of rather large heads : leaves small; 

 about i inch long, spatulate-oblong, entire below the middle, 

 subserrate-denticulate near the apex, the whole margin more or 

 less scabrous-ciliate, both faces glabrous ; branches of the pan- 

 icle long and leafy, the leaves little reduced : involucres turbi- 



