450 DESCRIPTIONS OF NEW SPECIES 
series; sepals linear, membranaceous on the margin. Receptacle naked. 
Anthers not bisetose. Achenium compressed, linear, acute at base, villous. 
Pappus of the radial masculine florets double, the outer paleaceous, entire, 
acute and elongated, the inner of a single series of scabrous hairs; pappus of 
the discal florets simple, pilose and scabrous, in several series.—A pparently 
a small acerose leaved, evergreen shrub of Peru, resembling a Heath. 
Leaves linear, obtuse, narrow and short, adnately revolute to the centre. 
_ Flowers yellow? aggregated at the summit of the branches, sessile, and sur- 
rounded by the imbricated leaves.—(The name is derived from Tapaotpepr, 
to invert; in allusion to the singular inversion of the florets, the masculine 
being external! in place of the usual order of internal.) 
Parastrephia * ericoides. 
Has. In Peru, near Arequipa; (Mr. Curson.) In sandy soil. Leaves and stem quite similar. 
to those of Ceratiola ericoidess the branches terete and tomentose; the leaves approximate, acerose, 
short and spreading, in about four rows, smooth and glutinous, bitter to the taste, about two 
lines long, and half a line wide, on the young shoots inbricated as in Abies. Involucrum sessile, 
the scales scariose on the margins, linear-oblong, nearly smooth. Pappus copious, as long as the 
florets, unequal and scabrous, rather rigid: the outer paleaceous pappus of the male flowers nearly 
half the length of the inner pilose hairs, subulate, white and shining, much longer than in any 
Chrysopsis. Achenium somewhat villous and compressed, linear-fusiform, almost exactly like 
that of Aster. In fact, our plant, notwithstanding its present arrangement, is nearly allied to 
Chrysocoma or Lynosyris, of which it has entirely the habit. The female florets are very slender 
and without any vestige of stamens; the style is also abortive in the male flowers of the ray. The 
florets of each kind are nearly equal in number; the female probably somewhat more numerous. 
(My specimens are mere sprigs, and I am, therefore unacquainted with the habit of this curious 
plant.) 
Tribe SENECIONIDE 4.—Division HELIOPSIDEZ. 
*MICROCHATA. (Lirocnzta and Wo.zastonta, Decand. in part.) 
‘Capitulum many-flowered, radiate ; rays in one series, feminine. Discal florets 
hermaphrodite, five-toothed. Involucrum hemispherical or subcampanulate,. 
the sepals foliaceous in two nearly equal series. Receptacle convex, palea- 
ceous, the pales membranaceous and folded. Branches of the discal styles 
acutely acuminate, as well.as those of the ray. Fertile achenia triquetrous, 
or obtusely quadrangular, indurated, subalated and scabrous; infertile. or 
