Heterachne. | CXLIV. GRAMINEJE. 635 
glunie, folded, with 2 broad dorsal wings. Styles short, distinct. Grain 
oblique or curved, enclosed in the glume and palea but free from them. 
The genus is limited to the two Australian species, which appear more nearly 
allied to Ectrosia and Elytrophorus than to Eragrostis, but singular in the whole 
spikelet with the exception of the outer glumes forming as it were an appendage to 
Spikelets ovate, 23 to 31 lines long, with more than 6 upper 
y glumes, in 1 or 2 heads, sessile in the leaf-sheaths 
_ or the upper one shortly pedunculate . . . . . . + L H. Browniü. 
Spikelets orbicular, scarcely 14 lines diameter, with less than 
6 upper empty glumes, in several globular small heads, 
forming a pedunculate interrupted spike . 2. H. Gulliveri. 
1. H. Brownii, Benth—Stems 6 in. to 1 ft. high, rigid, simple or 
slightly branched, slender and almost filiform in a few specimens. 
Leaves eonvolute, narrow, with broad loose sheaths. Heads of spike- 
than the glume, the wings broad, hyaline and shortly ciliate.— Poa 
abortiva, R. Br. Prod. 181. 
. Australia. Islands of the Gulf of Carpentaria, E. Brown ; Carron Creek, 
erb. F. Mueller, collector not named ; Port Darwin, Schultz, n. 302 (a single ap- 
parently depauperate specimen in Herb. F. Mueller). 
. 2. H. Gulliveri, Benth. in Hook. Ic. Pl. t. 1250.—Stems branch- 
ing at the base and under 6 in. in the specimens seen. Leaves narrow. 
on 
ciliate. Outer empty glumes smaller, unequal, the lowest l-nerv 
the 2nd 3-nerved but the keel not winged. Upper empty glumes 3 to 
5, like the flowering one but narrower. 
N. Australia. Between Norman and Gilbert Rivers, Gulliver. The deciduous 
Part of the spikelets with the enclosed fruit have much of the aspect of those of 
Courtoisia in Cyperaceze. 
