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LPR Pan OF PLANTS. 319 
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ell ray smooth. Receptacle naked, alveolate, dentate. ae ty 
: asitisn into the minute leaves of the branchlet. Achenium smooth, or 
somewhat hirsute, linear, angular and striate. Pappus pilose, scabrous, sim- 
ple, unequal. Flowers wholly yellow?—Dwarf, often resinous shrubs, re- 
sembling heaths, exceedingly branched, branches very leafy; leaves minute 
and subcylindric, acerose and semipervirent, crowded ; ‘flowers small, in a 
contracted, leafy corymb, or solitary and terminal.—(So named from a re- 
semblance to the genus Erica in the minute sempervirent leaves.) 
Ericameria * microphylla; crt viscid, leaves terete, distichally imbricated in 
the axils; rays three or four; achenium smooth; scales of the involucrum 
obtuse. Aplopappus ericoides, DECAND., Vol. V., p. 346. : 
Has. On rocks in a mountainous situation, near St. Barbara, Upper California. ‘Six to eight 
inches high, much branched from the base. Leaves three to six lines long, half a line wide, nearly 
cylindric, obtuse and rigid, at first, as well as the young branches, tomentose, at length smooth. 
Flowers crowded into an unequal corymb, the branchlets one-flowered, full of leaves to the sum- 
mit; scales of the involucrum in about three series, the outer leafy and acute, the inner obtuse. 
This cannot be, in any respect, a congener with Aplopappus ciliatus, or the genuine Chilian 
species. 
Ericameria *nana; smooth and somewhat glutinous, densely branched ; 
leaves linear acerose, acute, channelled; branchlets one to three-flowered ; flow- 
ers terminal, fastigiate ; ae of the involucrum similar; rays about four; 
achenium subhirsute. > 
Has. On shelving rocks on the Blue Mountains of Oregon. A shrub searcely a span high, ex- 
ceedingly branched and very brittle, somewhat resinous from exudation. Leaves no thicker than 
those of the pine, half an inch to an inch in length, somewhat narrower at base, sessile, Discal 
florets about eight, not deeply toothed, and, as well as the rays, yellow. Achenium nearly the 
length of the brownish pappus, linear, somewhat oblong, slightly hirsute when mature, somewhat 
angular and compressed. 
Ericameria * resinosa; every where glutinous, smooth; branches numerous, 
slender, corymbose ; flowers pedicellate; scales of the involucrum acute, the 
base microphyllous and squarrose; leaves subulate, acute; rays about six, often 
pilabiate! discal florets about twelve, all ochroleucous, five-cleft. 
mb icate, the i inner scales membranaceous on the margin, below passing in- 
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