300 
NEPENTHACEJS. 
[. Nepenthes . 
branches, coriaceous, glabrous, oblong-spathulate, obtuse, amplexicaul, 
4-10 in. long, the stout midrib produced 1-2 in. beyond the blade and 
then dilated into a vertical funnel-shaped pitcher 3-6 in. deep, with 
an oblique revolute closely-ribbed mouth and a round-cordate hori- 
zontal lid 1^-3 in. broad. Flowers in peduncled panicles 6-9 in. long, 
with corymbose branches, which, like the rachis and outside of the 
perianth, are clothed with dense persistent ferruginous tomentum. 
Perianth segments T V _ s ^ n - long. Anthers 6-10 in a globose head as long 
as the column of filaments. Ovary trigonous, glabrous, 3-celled, ob- 
conical. Mature fruit not seen. N. Wardii, Wright in Trans. Roy. 
Irish Acad. xxiv. 576, t. 29-30. 
Seychelles, by the side of mountain streams in Mahe at about 1500 feet. Endemic. 
Order LXXXIX. PODOSTEMACEiE. 
Flowers hermaphrodite, naked or enclosed in a single perianth, 
usually included before they open in a membranous spathe. Perianth 
green or coloured, 3-5-lobed. Stamens 1 or more ; filaments free 
or connate ; anthers 2-celled, with longitudinal dehiscence ; staminodes 
sometimes present. Ovary free, 2-3- or by abortion 1-celled ; placen- 
tation axile ; ovules numerous ; style 0 or very short ; stigmas 2-3, 
subulate. Fruit a minute crustaceous dehiscent capsule. Seeds minute, 
exalbuminous. — Submerged herbs of moss-like habit with minute flowers 
variously arranged. Distrib. Cosmopolitan in the tropics. Species 100. 
1. TRISTICHA, Thouars. 
Flowers hermaphrodite. Perianth of 3 oblong obtuse membranous uni- 
lateral segments. Stamen 1, hypogvnous, unilateral, exserted ; filament 
rather compressed ; anther ovate-oblong, purple. Ovary subsessile, 3- 
celled ; ovules many in a cell; stigmas 3, minute, sessile, subulate, diverg- 
ing. Capsule membranous, oblong, 9-ribbed, septicidally 3-valved. — Sub- 
merged herbs of moss-like appearance, with tristichous leaves and 
pedicellate solitary flowers, not enclosed in a spathe. Distrib. Pound 
the world in the tropics. Species 6. 
1. T. hypnoides, Spreng.; Weddell in DC. Prod. xvii. 45. Habit 
of a large moss, with copiously-branched stems from an inch to a foot 
long. Leaves oblong, trifarious, in. long, bright green, obtuse, 
1-nerved, exceeding the intern odes. Flowers terminal on short 
branches on pedicels usually much longer than themselves. Perianth 
-ig- in. long, of 3 boat-shaped membranous persistent segments free to the 
base. Capsule oblong, brown, crustaceous, as long as or longer than 
the perianth. T. bryoides, Gardn. in Wight, Ic. t. 1920. 
Mauritius, in running streams at Moka, Flacq, etc. T. tri/aria, Tulasne, Wed- 
dell, loc. cit., seems to be a mere variety with short stems and smaller densely 
crowded leaves. Cosmopolitan in the tropics. 
