jot 
.— Hydrocotyle.) LVI. UMBELLIFERA. 345 
oe at the nodes. Leaves eme or reniform, often above iin. 
diameter, crenate or r obscurel 5- or 7-lobed, very thin and membranous. 
ovate, about + line broad and rather longer, slightly compressed, not indented’ 
at the commissure, with about 6 e equa ribs on each side (the secondary ones 
| Prominent). Carpop hore deciduous with the carpels, 
a N 
tralia. Gulf of EE F. Mueller. 
20. H. diantha, DC. Prod. iv. 63. very slender diffuse glabrous 
anual, from 1 or 2 in. to twice that. eig Leaves shortly petiolate, orbi- 
ruar-crenate or reniform, shortly and obtusely 4- or 7-lobed. Stipules 
icellate flowers. Petals acute, valvate. Styles exosedingly, es Anin 
on pedicels of 2 to 1 line, very flat, fully 1 line broad and 
appearing rà ribbed on each side, when quite ripe the eg rib M 
TS to appear almost double, and each car pel is semiorbicular, very flat, 
each side Fiale by a thick margin with the intermediate rib not so pro- 
. Muell. Fragm. i v. 179 9. 
W. Australia, Swan River, din: Blackwood and Tone rivers, Oldfield. 
?l. H. lemnoide enth, A very small Lemna-like plant evidently 
floating i In water, with long matted filiform roots or submerged stems, the 
ing part not above 3 in., and often not } in. long. Leaves petiolate, 
otbicular-cordate or ce ad see. crenate, 1 to 2 lines diameter. Sti- 
pl a pa and rather la arg Flowers apparently unisexual, in umbels of 3 
. Present, but the ovar "e : 1 in ien shortly pedun- 
y abortive, Females (only seen 
late. Fruits nd z line broad and long, notched a t the base, laterally 
d 
M, the carpels couvex and faintly nerved on each side. 
Australia, Drummond, n. 902. 
ae alata, R. Br. in ES Rich. Hydroc. 13. t. 61. f. 98. A little 
de glabrous annual of 1 to 2 ith slender divaricate branches. Leaves 
deich Lee triangular-hastate and deeply 3-lobed, rather thick, not 
ltog road in our specimens. Stipules small, scarious. Peduneles 
P VI ong; cà a head or umbel of 6 to 12 almost sessile flowers. 
GE aen its about $ lines long and broad, compressed, with 4 
D eh equal se on each side, otherwise smooth or minutely :— 
: laria, Benth. in Hueg. Enum. 53. 
SS Géi King George’s Sound, R. Brown, Huegel ; Tweed and Kalgan rivers, 
: tetragon 
glabrous erg from 1 or 2 in ‘to e i, Bee: or “rather more. Leaves 
br : 
a slightly toothed, ‘the lower ones rarely slightly peltate. Stipules 
t Mostly jagged. Peduneles filiform, mostly shorter than the leaves, 
