CE A 
Aponogeton,] CXXXIX. ALISMACEZ. 189 
covering of A. monostachyus (at least in the specimens seen). Leaves 
submerged, very tender, from 6 in. to above 1 ft. long, and 3 to 12 in. 
sides into a short basal auricle, with , 7 or 9 longitudinal nerves. Spikes 
simple as in A, monostachyus but more slender and the flowers not so 
close. Perianth and stamens as in that species. Carpels of the ovary 
> . 
he style almost lateral. Seeds usually 3 or 4 in each carpel, narrow 
oblong, the outer membrane not striate, the inner one exceedingly 
delicate. Embryo with a narrow groove, the small plumula at the base 
of the groove below the middle of the embryo. 
N. Australia. Roper and Van Alphen Rivers, F. Mueller. 
sland. Brisbane River, F. Mueller ; Bailey. 
N. S. Wales. Richmon iver, Fawcett ; Clarence River, Wileoa (the latter 
Without fructification and the leaves all reduced to long petioles, but probably a 
state of the same species). 
This specie. 
A. undulatus, Roxb., which 
deformed by insects, and ripens only one or rarely two seeds in each carpel, and 
“ese seeds are of an ovoid shape with a broad open groove to the embryo. 
Orper CXL. ERIOCAULEZE. 
l 
qubricate scarious dry or rarely herbaceous bracts, 1 under each 
and us 
> 
ower, ually a few outer ones ty. Perianth normally of 6 
, yaline or scarious small segments in 2 row inner ones im- 
mediately under the stamens or oy. ry, the outer ones lower down o 
ra longitudinal slits. Ovary of 3 or 2 lobes and cells, with 1 pendulous 
“ach one usually enclosed at the base in a sheathing scale, and 
in the l e i, 
; the outer rows mostly female, the inner ones chiefly male, 
the two sexes often PREY OA all concealed mid. the 
