AND GENERA. OF PLANTS. 395 



VENEGASIA. (Decand.) 



Capitulum many-flowered, radiate; rays feminine, numerous, fertile. Discal 

 florets hermaphrodite, tubular-campanulate, five-toothed, the tube glandu- 

 larly hirsute. Stigmas obtuse, puberulous, terminating in an obscure and 

 very short cone. Receptacle naked, punctate, the margin paleaceous. In- 

 volucrura loosely imbricated in about two series of large, rounded, foliaceous 

 sepals. Achenium of the ray and disk similar, naked, without pappus, ob- 

 long, grooved, scabrous and four-sided. — An undershrub of Upper California, 

 with all the aspect of a Silphium. Puberulous; leaves alternate, deltoid- 

 cordate, dentate; branches one-flowered, leafy; flowers yellow. 



Venegasia Carpesioides, Decand., Vol. VI., p. 43. 



Hab. In rocky situations near the sea, around St. Barbara, &c., Upper California. Lower part 

 of the stem shrubby, the upper part considerably branched, puberulous, and scattered with nume- 

 rous small, shining glands, of a slightly bitter taste, and with something the aroma of the garden 

 Marygold. Petioles about an inch long. Leaves deltoid-cordate, mostly serrate, acute, (sometimes 

 nearly entire,) with three principal, slender, spreading nerves; about two inches long, and two to 

 three wide. Involucrum very similar to that of a Silphium, composed of two or three series of 

 dilated, roundish, cordate leaves, somewhat spreading, but closely imbricated at base, which, 

 internally, is covered with a matted tomentum. On the margin of the receptacle there occurs one 

 or two rows of large, oblong, partly membranaceous paleee, somewhat torn on their margins. Rays 

 about fifteen, oblong, entire, longer than the disk; the whole flower about two inches in diameter, 

 with both ray and disk yellow. Achenia about the size of Caroway seeds, black, with a rather 

 large and prominent epigynous disk. 



Division iii. Cotule^. (Lessing.) 



*AROMIA. 



Capitulum many-flowered, discoidal, heterogamous; rays feminine, minute, 

 truncated, (five or six,) bidentate; discal florets very short and rather round, 

 about a third the length of the achenium, glandular, minutely five-toothed, 

 closed. Stigmas short, subcapitate or obtuse. Receptacle naked. Involu- 

 crum subhemispherical, of a single row of angular, oval, imbricated sepals, 

 about five in number. Achenium subhirsute, linear, obconic, compressed. 



