ao. NAIADACEZ (Bennett). [ Ruppia. 
1. R. spiralis (Dum. Fl. Belg. 164) ; sheaths a peduncles 
spirally coiled ; drupes nearly strai ight. RB. maritima var. spiralis, 
Aschers. in Aschers. and Schweinf. Ill. Flor. Egy mie 144 ; Durand 
and Schinz, Conspect. Fl. Afr. 497. 
Coast ogg tidy ie ape Div. ; shallow pools in the vicinity of Green Point, near 
Cape Town, Harv 
Also in Egypt ue along the coasts of Europe. 
V. ZANNICHELLIA, Linn. 
Male flowers : Anther 2—4-celled, with a slender filament. Female 
flower in a membranous perianth. Carypels variable; style long or 
short ; stigma ea) erenate. Fruit of 4, rarely less or more, long, 
incurved achenes. pendulous, cotyledonary end folded on itself. 
Slender submerged fresh, brackish, or salt water plants; leaves mostly opposite, 
linear or capillary, with stipular sheaths ; flowers small, in pairs, or solitary, in @ 
membranous peria fonts 
Distris. Temperate and tropical regions. Species 4-5? 
Z. palustris (Linn. Sp. Plant. ed. 1, 969) ; fruits subsessile, or 
sessile ; beak about half as long as the rest of the fruit. Z. stylaris, 
Presl, Bot. Fare 112. 
SoutH AFRIcA: without locality, Harvey, 481 
ignore — 1oN: Little Namaqualand; near the mouth of the Orange River, 
Dregs 
ee Region: Griqualand West; Hay Div., Ongeluk, Burchell, 2648! 
Orang: Pies State; Kanon Fontein, Rehmann, 3558! 
Sub-sp. pedicellata got van erage a fruits hg the common oo 
ind pedicels piengeted: and Schinz, Conspect. Fl. Afr. v. 498. 4: 
paddectlate: Fr. Novi See iy mets Se, Engl. Bot. ix. 87. § 
oe Region : Natal, according to Durand and Schinz. No specimen at 
VI. ZOSTERA, Linn. 
Male flowers of single sessile anthers. Female ae of a solitary 
L-ovuled bare el; style persistent; stigmas 2. Fruit membranous. 
Umbryo gr 
pee mer; ce ~~ plants, with dark ribbon-like leaves ; rootstocks m atted, 
eeping ; mpressed ; leaves eager 4 ty 28 linear ; stipules combining 
with the sheathing leaf. base; flowers nthers and carpels 0 
surface of a ar spadix, par ina loaf-lik. soo ie. 
DISTRIB. pear of Europe, Asia, and aka 
Spadix without clasping bands; nuts striate... ... (1) marina. 
Spadix with clasping bands ; nuts smooth bee -» (2) nana. 
. Z. marina (Linn. Sp. Plant. ed. ii Pasa var. a 
Gieme, YL. Dan. t. 1501) ; leaves 1—1 in. broad, 1—3-nerv 
as A¥RicaA: without locality or pee Ss hame, in Kew eiciaia’ 
he type has leaves 4-3 in. broad and Oo ed, and is found on the coasts of 
North Africa, Europe, America, and Asia 
