CHARACTERS OF SOME GNAPHALIOID COMPOSITÆ. 177 
scariosis, oblongis, acuminatis, basi linea viridula carinatis intusque 
excavatis, flores superantibus, persistentibus, squamis involucri 
referentibus. nvolucrum, preter paleas exteriores basi tenuiter 
lanosas, nullum. Flores hermaphroditi, conformes. Corolle longe 
tubulosæ, graciles, apice dilatatæ, 3-dentatæ. Anthere 3, ecaudatæ. 
Styli rami apice capitellato-truncati. Æ4chænia obovata, erostria, 
tenuissime 5—6-costata, glabra, pappo coroniformi lacerato caduco 
superata.—Herbula annua; radice exili; folis rosulatis, lineari- 
subulatis basi dilatatis, glabellis, glomerulum globosum arcte involu- 
crantibus. 
C.? pygmeum. (Ic. Pl. tab. ined.) 
South-western Australia, Drummond.—The whole plant consists of 
a globular dense cluster of capitula, three or four lines in diameter, 
subtended by a rosulate tuft of narrow leaves (four or five lines long), 
which form a general involucre, and resting directly on the ground, to 
which it is affixed bya slender root. Capitula (2 lines long), cylindra- 
ceous, about twelve in the general glomerule, closely sessile, surrounded 
by no common involucre besides the rosulate leaves of the plant, the 
exterior, however, subtended by a subulate foliaceous bract. Proper 
scales of the involucre none; that is, there are no exterior scales 
destitute of a flower in their axil. Paleæ hyaline, whitish, all alike, 
except that the outermost are clothed with long woolly hairs at the 
base, otherwise all glabrous; the upper half of each more or less 
spreading ; the lower appressed, broader and more concave, and with 
a narrow, greenish projecting keel, which is excavated within, and 
partly embraces the achzenium ; the base scarcely attenuated. Corolla 
rather longer than the appressed portion of the subtending palea. 
Pappus a delicate lacerately multifid crown, caducous. 
This pigmy plant forms a genus (named from yaya), indien > 
and opapiov, a little sphere), evidently related to Ohthonocephalus of — 
Steetz ; from which it is at once distinguished by its few-flowered 
heads, flat receptacle, and coroniform pappus. The two would, per- 
haps strictly, belong, where Steetz placed the latter, to the Graphalieæ 
Cassiniee ; but I think they are more naturally placed, or at least 
Chamespherion, at the end of the Angianthee. The anthers are not 
at all caudate in our plant ; nor are they perceptibly so in several 
Angiantheæ, and in a species of Chthonocephalus gathered by Drum- 
mond, which differs from C. Pseudevaz, as described by Steetz, in the — 
VOL. III. 2 A 
