274 SOUTH-WEST AUSTRALIAN COMPOSITE. 
aut plumosis.—Herbæ forte annus, pl. m. viscoso-pubescentes vel 
pilis mollibus ramentaceis pulverulentæ, primum floccoso-lanatæ ; 
caulibus erectis, ramis ramulisve monocephalis; foliis alternis linea- 
ribus semiamplexicaulibus, imis subspathulatis. Ligule et coroll 
disci in sieco concolores, ochroleucæ. 
Asteridea pulverulenta, Lindl., certainly belongs to the Gnaphaliee- 
Leysseree, and Steetz has perhaps with good reason taken it for a 
species of Athrivia, otherwise a South African genus. But on the 
other hand, it differs from the subjoined new species of the same region 
. only in the sete of the pappus being barely darbellulate above (scarcely 
more so than in genuine 4thrixie), while in these they are truly plu- 
mose. On the whole I prefer to associate the Australian species under 
Lindley's name, to the alternative of reducing them all to sections of 
Athrixia. lam obliged to admit a discoid. species also, the deformed 
marginal corollas of which, however, show a manifest tendency to 
become radiate. It seems too near Chrysodiscus, of Steetz, which I 
have not seen. But the achenia of the latter are said to have a lateral 
areola, and the corollas to be uniform and barely five-toothed, the mar- 
ginal ones entirely destitute of anthers. 
§ 1. AsTERIDEA, Lindl. Pappi setze 10, superne crassiores barbellu- 
late tantum. Corolle disci 5-dentatæ, dentibus breviusculis. 
1. A. pulverulenta, Lindl.l.c. Athrixia australis, Steetz in Pl. Preiss. 
vol. i. p. 482. 
§ 2. PriLOTHRIXIA. Pappi sete 4—10, superne vere plumosæ albe. 
Corollæ disci limbo profunde 6-fido, lobis linearibus vel lanceolatis. 
* Capitulum radiatum, ligulis elongatis. Squamæ involucri €x- 
timæ in setam longam attenuatæ. Pappus corollà paulo bre- 
— vior. 
Bok multiceps (n. sp.): nana, lana floccosa mox decidua tecta ; cauli- 
bus plurimis e radice forte annua parce ramosis ; foliis lanceolatis, 
. radicalibus oblongo-spathulatis ; involucro lanato-villosissimo, ligulis 
plurimis; pappi setis 8-10, 
. South-west Australia, Drimond.— Stems rather stout, three inches 
high. Head two-thirds or three-fourths of an inch in diameter, not 
ineluding the numerous linear-lanceolate ligules; the latter are nearly 
half an inch long, three-toothed at the apex. 
3. A. gracilis (n. sp.): caule gracili e radice annua simpliciusculo 
foliisque linearibus lana tenui araneosa caduca primum indutis; invo- 
