Lepilaena. | NAIDACEAE. 131 
sessile or very shortly pedicelled. Perianth-segments 3, oblong, entire 
or 2-lobed,.almost as long as the styles. Carpels 3, sessile; styles slender; 
stigmas very large and broad, deeply fimbriate or laciniate. Ripe carpels 
about =; in. long, slightly oblique, -turgid, rounded on the back; style 
almost as long as the carpel.—Cheesem. Man. N.Z. Fl. (1906) 753. 
N: Boland § (hlnin lay VY Loter. att Milan Jel 6S Ptavd, 
SoutH Istanp: Canterbury—Streams flowing into the Selwyn River; near the 
outlet of Lake Ellesmere, 7. Kirk! Otago—Lake Waihola, Waikouaiti, Taieri Plain, 
Petrie / 
A very curious little plant. Mr. Kirk describes the anthers as solitary; but in 
Mr. Petrie’s Lake Waihola specimens, which are the only males that I have seen, I make 
the anthers to be 2, placed back to back, but closely resembling a single 4-celled 
anther. At the same time it is not easy to satisfy oneself as to the structure of 
the anther from an examination of dried specimens. 
Sma oleae peo TE. Onrnaan. Sy (1q07) a2. 
6. ZO A Linn. q7apr, 
Marine submerged plants. Rhizomes slender, branched, creeping and 
rooting at the nodes, often matted. Stems short, slender, leafy, com- 
pressed. Leaves distichous, alternate, narrow-linear, grass-like, 1-5-nerved, 
sheathing at the base; sheaths stipuliform, with inflexed margins. Flowers 
monoecious, the males and females placed alternately upon one face of 
a narrow spadix enclosed. within the dilated membranous base of a leaf. 
Perianth wanting. Male flowers: Anther solitary, sessile, oblong, cylindric, 
curved, I-celled; dehiscence longitudinal; pollen confervoid. Female 
flowers: Carpel solitary, laterally attached above the middle, narrowed 
into a short subulate style; stigmas 2, capillary; ovule pendulous from 
the apex of the cell. Ripe carpel oblong, membranous, bursting irregularly. 
Seed pendulous ; testa membranous, often striated ; embryo large, deeply 
grooved, the linear incurved cotyledonary end sunk in the groove. 
Three or four closely allied species are known, found in shallow water on the 
shores of most temperate regions. 
lf? 2s/ 
Leaves 3-9 in. X 4,—;1,in., truncate or notched at the tip. Spadix 2 
with transverse appendages, one folded over each carpel .. IL. Z. nana. 2 hautlleri 
Leaves 9-18 in. xX ;/, in.—4 in., rounded at the tip Ae .. 2 Z. tasmanica. 
*2-Capricorné 
1. Z. nana Roth Enum. Pl. Phaen. Germ. i (1827) 8.— Rhizomes 
slender, matted. Leaves 3-9 in. long, rarely more, +,-;4, in. broad, narrow- 
linear, truncate or obscurely notched at the tip, with 3-5 faint parallel 
nerves on each side of the stout midrib and distant transverse veinlets, 
margins thickened. Floral sheaths or spathes 4-lin. long, on peduncles 
of equal length, the blade of the leaf continued above the sheath, the 
sheath itself much wider than the blade. Spadix 6—12-flowered, its margins 
with transverse membranous appendages folded inwards, one over each 
carpel. Stigmas usually protruding through the slit of the spathe. Fruit 
about =4, in. long, oblong, obscurely striate—Benth. Fl. Austral. vii (1878) 
176; T. Kirk in Trans. N.Z. Inst. x (1878) 392; Cheesem. Man. N.Z. 
Fl. (1906) 754. Z. Muelleri Irmisch ex Aschers. in Linnaea, xxxv 
(1867-68) 168. 
NortH anpD SourH Isianps, Stewart Is~tanpD: Muddy and sandy shores 
throughout, usually between high- and low-water marks. Widely distributed in 
temperate seas. 
5* 
