460 LXII. COMPOSITE. : [ Vernonia. 
N. Australia. Victoria river and Macadam range, F. Mueller 
Queensland. Port Curtis, M‘ Gillivray; Rockingham Pay; "Port Denison, Rock- 
hampton, MM: Brisbane river, Moreton Bay, and Peak Downs, F. Mueller ; Keppel 
Thoz 
. S. Wales. Port Jackson to the Blue Mountains, Wool/s and others ; hward 
^ Clarence and Hastings rivers, Beckler ; New England, C. Stuart ; southward + "wed 
Bay, Mossman. 
There are two principal varieties in Australia, one either nearly glabrous or rarely hirsute, 
with short rigid hairs, the other very hoary-tomentose or woolly, with softer more weng 
leaves, and usually smaller flower-heads, the corolla-lobes also appear shorter. The 
very purple or white, but almost always purple in the more glabrous form. 
5. CENTRATHERUM, Cass. 
Involuere imbricate, a few of the outer bracts long and leaf-like, the others 
not longer than the florets, the inner ones the longest. Receptacle naked. 
Florets all tubular and equal, regular, with 5 narrow lobes. Anthers obtuse 
at the base ; style-lobes subulate. Achenes Pis , nearly cylindrical, striate. 
Pappus of a single series of rigid, flattened, hirsute, v very deciduous, almost 
chaff-like bristles.— Herbs or shrubs. Leaves alternate. Flower-heads on 
terminal or leaf-opposed peduncles. —Involucres "hemisphere 
usually purple. 
A small American genus, of which two "TER ineluding the Australian one, 
over several of the warmer regions of the Old World. 
1. C. muticum, Less. ; DC. Prod. v.10. A rigid divaricately-branched 
um probably annual, although with a hard almost woody base, spr' reading to 
2 or 3 ft., a or oe ent. cte Zeen lanceolate-oblon 
ed. Flower-heads 
have spread 
tips. Florets purple, much longer than the involucre. Achenes usually gla- 
brous, with about 10 very obtuse n the pappus falling 
ripe. 
T sland. Brisbane river, Moreton Bay, F. Mueller ; Rockhampton, Dallasiy : 
CR Wales. Hawkes sbu ury ri , R. Brown; Clarence river, Beckler, Wileor ; 
Blue Mountains, 2f iss Atkins. 
same from the 
Philippine 1 ies is common in tropical America ; we have also apparently the 
6. PLEUROCARP ZA, Benth. 
Involucre ovoid, the bracts few, herbaceous, imbricate, not so long as the 
florets. Receptacle without scales. Florets all tubular at equal, regum 
often incurved, with 5 narrow lobes. SE sagittate a 
es 
one 
The Ze is limited toa ses species endemie i in A ge ame ont SH Së to any 
known to me, unless it be to some sae anm species of Decan 
1, P, denticulata, Benth. Herbaceous, with a Geier? or decun- 
