290 DESCRIPTIONS OF NEW SPECIES 
linear entire, the radical and lower ones spathulate, serrate towards the apex. 
Liguli conspicuous, purple; disk yellow. Pappus rufous. Allied to Hete- 
rotheca, but with the rays neuter, the pappus simple, and the flowers hetero- 
chromous. 
Corethrogyne *incana., arachnoidly tomentose, leaves oblong-lanceolate, or 
linear, acute, amplexicaule, nearly entire; branches slender, one or few flow- 
ered, fastigiate; involucrum viscidly pubescent, of about four series of acute 
sepals, the lower ones squarrose; rays about twenty, as long as the disk.— 
Has. Near St. Diego, Upper California. Flowering in May. Rays fia fine, 
light bluish purple. Stems numerous, about twelve to eighteen inches long, 
very leafy, branching above; branches slender, one to three-flowered; lower 
leaves somewhat three-nerved. Capitulum about the size of the common 
Daisy; the involucrum viscid, and sometimes the extreme branchlets; sepals 
linear-lanceolate. Rays tridentate, without any distinct germ or pappus. C. 
Californica? Decann. Diplopappus incanus, Linp. Aster? tomentellus? (Hoox. 
and Arn. Bot. Beechy.) With the heavy aromatic odour of some Gnapha- 
hums. 
Corethrogyne * filaginifolia, arachnoidly tomentose, radical leaves spathulate, 
serrate, those of the stem linear, or spathulate, acute, entire, sessile; branches 
one-flowered, fastigiate; involucrum in about three series of lanceolate, very 
acute, erect sepals; rays twenty to twenty-four, bidentate, scarcely as long as 
the disk. Aster? filaginifolius. Hoox. and Arn. Bot. Beech.—Has. Around 
St. Barbara, Upper California. 
Oxzs.—A smaller flowered, more slender species than the preceding, with a 
smaller and not viseid involucrum, the leaves more whitely tomentose.—In 
neither of these species haveewe observed: any palew on the receptacle, as de- 
scribed by Decandolle, and, in consequence, they..were rehotrag to Aster by 
Hooker and Arnott. 
ASTER. (Linn.) 
Aster * Andinus, root-stock slender and creeping; stems several, decumbent, 
above pubescent, mostly one-flowered; leaves entire, smooth, radical spathu- 
late, sublanceolate, cauline sublinear, acute, usually wider at the base and am- 
plexicaule; scales of the involucrum linear, nearly smooth and mostly acute, 
