438 DESCRIPTIONS OF NEW SPECIES 
SONCHUS. (Cassini, Decand.) 
Sonchus fallax? . 3. * Californicus. 
Has. In Upper California, around St. Diego. Dentures of the leaves, which are pinnatifid, 
deep and pungently spinulose; achenium smooth and even, elliptic, alated, puberulous on the mar- 
gin, Probably a distinct species, though so similar to the present as not to be distinguishable, ex- 
cept by the pungeney and length of the marginal spines, and the alated achenia. 
Sonchus * tenuifolus; ©, smooth; leaves bipinnatifid and pinnatifid, auricu- 
late at the base; segments few, linear-lanceolate, spinulosely serrulate, the up- 
per simply pinnatifid, with linear, subulate segments; involucrum caliculate, 
- smooth; achenium substriate, transversely rugose. 
Has. In Upper California, round St. Diego, in shady ravines, among rocks. A very distinct 
species. Primary divisions of the leaves, when bipinnatifid, with a single pair of segments, central 
or terminal segments usually elongated and acuminate; divisions ‘of the lower leaves obtuse. 
Involucrum scarcely tumid. Stem slender, about two feet high. Leaves three or four inches 
long, of a very thin consistence, as in S. tenerrimus. 
Subtribe * ANDRYALE. 
Receptacle naked or fimbriliferous, sometimes with the margin paleaceous. 
Pappus white, usually double, the inner deciduous, filiform, barbellate to- 
wards the base, where it adheres in a circle, the outer a minute paleaceous 
crown. Achenium erostrate, striate, angular or cylindric. 
AnpryaLa Ragusina, A. varia, A. sinuata, A. integrifolia, and proba- 
bly other species. In these, except the first, the outer pappus is obscure, and 
the salient summits of the ribs of the achenium resemble the outer pappus: 
hese, with a very deciduous and much less barbellated pappus, &c., ought to 
be restored to the: genus Voicutia, of Roth. 
*LEPTOSERIS. 
Capitulum many-flowered, (forty, or more.) Involucrum campanulate, cali- 
- culate; sepals distinct to the base, linear-lanceolate, in a single equal series, 
~ the margin membranaceous ; caliculum small, of about eight unequal bractes. 
Resaptacle naked. Achenium finely striate, somewhat attenuated above, 
