CONTRIBUTIONS TO THE FLORA OF AUSTRALIA. 189 
by the posterior calyx teeth and the inflorescence, and from 
the former by the leaves, pod, stipes etc. The specimens 
could not be matched either at the National Herbarium or 
at Kew; although no fiowers were available it seemed 
advisable to describe the species, as no fresh material 
has been procurable since 1889. 
Helipterum album, Ewart, n.sp. (Composite). Woorooloo, 
W.A. M. Koch, No. 1553 (1906). 
An erect annual 10—40 cms. high, branching from the 
base upwards and ending in very numerous corymbose 
clusters of small elongated brownish-yellow heads, tipped 
with white. Stems slender, usually red or brown-violet, 
and covered together with the leaves, with a fine soft wool 
of long curling but somewhat sparse hairs. Leaves linear 
pointed mostly 2 to 3 cms. long, flat, but curling more or 
less regularly on drying. Heads about $ cm. long by 1 to 
14 cm. broad, usually in clusters of 3 to 6 or more. The 
bracts nearly yellowish-brown, glabrous or a few sparse 
woolly hairs at the edges, long and narrow, the outer scales 
with obtuse ends, the inner with small white nearly erect 
laminas. Florets about 10, all tubular and hermaphrodite, 
ovary silky, hairy when adult, pappus of more than 10 fine 
plumose bristles. The size of the plant is sufficient to dis- 
tinguish it from H. pygmaeum, and it differs from any of 
the recently described Helipterums of Spencer le Moore 
and of Hemsley. From H. corymbifiorum var. microglossa 
it is distinguished by the smaller, narrower, more crowded 
and numerous heads, the erect white laminas ete. The 
same features distinguish it from H. polyphyllum, and in 
addition the achenes are less hairy and the outer bracts 
are nearly or completely glabrous. It is perhaps more 
Closely allied to H. corymbosuin, Benth., but the bracts 
are pale and yellowish instead of reddish-brown, the florets 
are fewer, the pappus hairs are more numerous and finely 
