28 University of California Publications in Botany. [VOL. 3 



H. VISCOSA A. Nelson, Bot. Gaz. xxxvii. 263 (1904), of 

 Southern Nevada, is described as differing from our species 

 mainly in having its heads congested in capitate clusters. 



2. MALPERIA Wats. 



An erect desert annual with the aspect of Chaenactis. Leaves 

 alternate, sessile except the lowermost, narrow. Heads on short 

 peduncles, loosely cymose, several to many-flowered. Involucre 

 turbinate; the narrow bracts thin and very unequal, several- 

 nerved. Receptacle naked, flat. Corolla narrow-cylindric with 

 short erect lobes. Anther-tips ovate, obtuse. Style-branches 

 filiform, obtuse, thickened and exserted at maturity. Achenes 

 pentagonal, slender. Pappus of 3 hispidulous setae as long as 

 the corolla alternating with minute truncate erose paleae. 



1. M. tenuis Wats., Proc. Am. Acad. xxiv. 54 (1889). 



Slender, cymosely branching, 1.5 to 4 dm. high: herbage 

 minutely scabrous: leaves linear, acuminate, 2 to 5 cm. long, 

 entire (or with a few teeth, ace. to Watson) : involucre 8 to 10 

 mm. high; bracts linear, the inner acuminate, all scarious-mar- 

 gined, pubescent on the back: achenes slightly hispid on the 

 angles. 



Los Angeles Bay, Lower California Palmer, ace. to Watson; 

 San Jose de Gracia, Lower California, Apr., 1889, Brandegee; 

 Santa Gertrudis, Lower California, Mar., 1898, Orcutt; Signal 

 Mt., near U. S. and Mexican boundary line, 1901, Brandegee; 

 Split Mt., San Diego Co., California, Apr., 1905, Brandegee. 



3. BRICKELLIA Ell. 



Herbs or undershrubs (all the California species woody- 

 stemmed perennials) with opposite or alternate veiny leaves. 

 Heads small or medium-sized. Involucre cylindric to campan- 

 ulate, 5 to 50-flowered; bracts chartaceous or membranous, 

 striate, the outer ones successively shorter in most species. Re- 

 ceptacle naked. Corollas white or whitish, slender, 5-toothed at 

 summit, the teeth mostly glandular externally. Achenes 10- 

 costate. Pappus a single series of scabrous or plumose capillary 

 bristles. 



