AND GENERA OF PLANTS. . 387 
sheathing, with the summit free and foliaceous ; diseal florets dark brown, maseuline. Receptacle 
convex, villous. % 
*MADORELLA. 
Manta, but with the achenium compressed, and without angles, or nearly so. 
Rays pubescent at the base, trifid, as long as the involucrum. Discal florets 
subcylindric, with a pubescent tube. Stigmas filiform, acute, slenderly and 
glandularly pubescent. Receptacular palee in a single series.—Biennials, 
with slender, virgate stems; capituli subglobose, naked, pedunculate; leaves 
entire; linear. Flowers pale yellow.—Nearly allied to Madia, but with a 
different habit and stigma. 
Madorella * racemosa; hirsute, the involucrum also glandular; leaves linear, 
acute, the lowest ones opposite, radical ones only subserrulate ; , flowers axillary | 
and terminal, Facemose. 
Has, On the banks of the Oregon, near the estuary of the Wahlamet. Stem slender, rigid and 
twiggy, involucrum of about twelve carinate embracing sepals, with leafy tips. Rays rather long, 
trifid, their styles filiform, nearly smooth, and equal. Discal florets five-toothed, pale yellow, 
numerous, all fertile: a single row of leafy scales outside the discal florets, the rest of the receptacle 
naked, Achenium smooth, finely granulated as in Madia. 
Madorella * dissitiflora;. hairy and viscid; stem slender, virgately branched ; 
flowers axillary, lateral and terminal, shortly pedicellate; leaves linear sessile, 
on the branches very short. 
Has. In the Blue Mountains and plains of the Oregon. A slender, often much branched twiggy 
plant, with naked flowers, and a very viscid, almost spherical involucrum. Achenium granulated, 
flat, slightly and obsoletely angular. Rays small, trifid, pale yellow. 
* MADARIOPSIS. 
MapartA, but with the discal florets fertile, and a very strongly tuberculated 
achenium in both ray and disk; that of the ray curved, and unequally t 
sided, with a small, oblique rostrum and an acumination at base; the central 
achenia ‘unequally five-sided, compressed, the surface without the granular 
_ lines of Madia. Several rows of exterior discal florets, with a fae tabe. 
es _ Rays white, or ochroleucous, at length red, with a pubes« 
 Jonger than the disk. 
