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Naias.] CLIV. NAIADACE..lE.<br />
lapping edges, upper edge truncate, shoulders broad rounded with<br />
10 teeth. Flowers solitary. Male and female on the same shoot.<br />
Male sessile; spathe ellipsoidal ending in a cylindric neck with<br />
numerous spines at the mouth. Perianth fitting closely to the<br />
ellipsoidal 4-locular anther ending in two thickened lips. Achene<br />
with 30 rows of small hexagonal pits. Hab. Singapore, in ditches<br />
at Tanglin (Ridley). Distrzb. Andamans and Tonkin.<br />
ORDER CLIVA. POTAMOGETONACElE.<br />
Aquatic submerged herbs. Flowers un i- or bi-sexual terminal,<br />
very small. Perianth usually absent. Anthers several, sessile.<br />
Carpels free, 1 to 4.<br />
1. RUPPIA, Linn.<br />
Submerged aquatic plant with very slender branches. Leaves<br />
filiform narrow; sheaths stipule-like. Flowers minute, 2 to 6 on<br />
a short peduncle from the leaf-sheath. Perianth none. Anthers 2,<br />
sessile, opposite, 2-celled. Carpels 4, I-ovuled; stigma sessile.<br />
Achenes beaked ovoid (or blunt) borne on lengthened pedicels, the<br />
peduncle lengthening straight (or spiral) in fruit. Species I, whole<br />
world usually in brackish or salt water.<br />
(1) R. maritima Linn. Sp. Pt. 127; Ie. Ft. Germ. vii. t. 17; Hook.<br />
fit. F.B.I. vi. 568; Griff. Notulce, iii. 196; Ie. Pt. As. t. 257-259.<br />
(Fig. 208, p. 366.)<br />
Stem creeping at base up to 2 ft. long, very slender. Leaves<br />
alternate I to 3 in. long, very narrow, dark blackish green. Peduncle<br />
straight in fruit, I to 6 in. long. Achene brown, ovoid, beaked,<br />
'08 in. long. Hab. Rice-land. Province Wellesley. Prai (Burkill).<br />
Distnb. Europe and Asia, Africa, America, Australia.<br />
ORDER CLV. FLAGELLARIACElE.<br />
Climbing shrubs, or terrestrial or aquatic herbs. Leaves many<br />
nerved; petioles sheathing. Flowers small in terminal panicles,<br />
un i- or bi-sexual. Sepals 3, imbricate. Petals little longer.<br />
Stamens 6, hypogynous; anthers basifixed. Ovary superior,<br />
3-celled. Style long or short. Stigmas 3. Fruit a drupe or 1- to<br />
3-seeded berry.<br />
Flowers bisexual; stem woody climbing by cirrhose<br />
leaves, . . . . . . .<br />
Flowers unisexual; stems erect reed-like, hollow<br />
Flowers urdsexual; stem herbaceous; leaves large<br />
1. FLAGELLA RIA<br />
2. }OINVILLEA<br />
3. SUSUM<br />
Stem slender.<br />
1. FLAGELLARIA Linn.<br />
Leaves sessile, narrow lanceolate (or broad)<br />
ending in a cirrhose point by which it climbs. Panicles lax.<br />
Flowers small, white, bisexual. Seeds I or 2. Species 4, one<br />
Polynesian, rest Old World tropics.
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