146 CALIFORNIA ACADEMY OF SCIENCES. 



with the plant of Bentham, but may not be the same. 

 The broad foliaceous bracts of the involucre are 5 in a 

 single series, many times surpassing the bracts of the re- 

 ceptacle. The fructiferous bracts are setose at the sum- 

 mit, and more or less on the dorsal tuberculations. The 

 outer rows in age have a sharply tuberculate dorsal angle 

 and scattered tuberculations over the upper third. The 

 apex of the curved pyriform akene projects slightly at the 

 summit, and is very slightly (in the outer rows) surpass- 

 ed by the peak of the bract: pappus crown nearly obso- 

 lete. 



311. Aevordia geomerata Brandegee. Specimens 

 from Todos Santos and San Jose del Cabo are much 

 taller and decidedly frutescent. The flowers are smaller, 

 solitary or rarely 2-3 in the involucres, always rayless. 

 The pappus scales are divided into numerous acuminate 

 narrow palea? of irregular length. 



312. Viguiera deltoidea Gray. The leaves are 

 often somewhat irregularly dentate or crenate. — Todos 

 Santos, La Paz, San Jose del Cabo. 



313. Viguiera tomentosa Gray. — Todos Santos, 

 La Paz, San Jose del Cabo and the summits of the high- 

 est mountains. 



314. Encelia Palmeri Vasey & Rose. — La Paz. 



315. Encelia farinosa Gra}'. — La Paz. 



316. Verbesina erosa. Herbaceous and many stem- 

 med from a woody root, scabrous and hirsute,' i-i>^ m. 

 high: leaves ovate-lanceolate, opposite, i dm. long on 

 short: margined petioles, not decurrent, scabrous above, 

 hirsute below, serrate : heads loosely corymbose, 15 mm. 

 high, either with rays or rayless: bracts of the involucre 

 ovate-acuminate, in 2-3 series, hirsute: rays when pres- 

 ent oblong, 10 mm. long, fertile: akenes obovate, usually 



