CXXXVIII, NAIADE. 179 
7. LEPILZENA, J. Drumm. 
(Hexatheca, Sond.) 
. Flowers unisexual, usually dicecious, solitary within a pair of sheath- 
ing bracts (sometimes wanting to the central flower of a male cluster). 
stipitate, tapering into a short or long style with an entire oblong 
a; 0 i i 
6:14 
attached near the apex, oblong-linear. Embryo straight, except the 
cotyledonous end more or less involute,—Submer ed plafits, with fili- 
d stems and capillary leaves often minutely serru- 
i base into narrow stipular sheaths, the floral leaves 
nearly ab their sheaths more or jess dilated, enclosing at least 
wers. 
The genus is exclusively Australian, inhabiting freshwater or saline marshes 
lagoons. as by : 
hes and 
that h lt has been „9y some referred to the Mediterranean genus Althenia, but 
Heu huy the single stamen in the same cluster as the female flowers and the 
sma of Zannichellia from which it is scarcely generically distinct. 
Style much shorter than the carpel. 
Female flowers on pedicels soon elongated, the perianth- 
segments ovate, much shorter than the carpels . . 1. Z. australis, 
wers pedicellate above the sheath, Perianth- 
F a ge pi inconspieuous, nearly as long as the E 2, L. cylindrocarpa. 
erianth-segments rather longer than the els 
L T oiia a ee a 
5 flys australis, J. Drumm.; Harv. in Hook. Kew. Journ. vii. 58.— 
S filiform, much-branched. Leaves capillary, slightly dilated and 
their di] € In the male plant floral leaves several together, 
plete] d stipular bases forming an involucre of 2 or 3 lines com- 
thin y enclosing 2 or 3 flow ers, each flower also enclosed in 1 or 2 ve 
ap membr sheaths without any or short 
stipular bases, the flowers shortly pedicellate, but the 
of3 Mom elongating to from 3 to 6 lines or even longer. „Perianth 
Segments not 4 line long. Carpels 3, oblong, tapering into a 
Pae shorter than the carpel itself with a slightly dilated oblong stigma. 
under ] line long, shortly stipitate on the receptacle. 
184, 397. ia. Swan River or King George’s Sound, Drummond, n. 100, 179, 
wits Hatt iver, Did 
Lake, Gunn, ? Zannichellia palustris, Hook, f. Fl. Tasm. ii. 43, from Arthur’s 
Without flowers, and Swanport, Story, with male flowers, is referred 
N 
