ZOSTEKA. — NAIAS. 
445 
1. ZosTERA. Fl. imperfect. Stain, and pistils inserted in 
two rows upon one side of a spadix. Spath linear, leaflike. 
Fl. naked. Anth. 1. Ovary 1 ; style 1 ; stigmas 2. 
2. Naias. Fl. imperfect, solitary, sheathed ; no perianth. 
Barren fl. of 1 stamen. Fertile : style short : stigmas 2 — 4 
filiform. 
1. Zoste'ea Linn. Grass- wrack. 
1. Z. m'tna (Roth) ; 1. linear 1-veined, ped. filiform, spadix 
short with 2 — -5 clasping bands, nuts smooth. — E. B. ,S. 2931. 
R. vii. 2. — Plant small, scarcely 3 in. long. L. slender. Ped. 
pale-coloured throughout, \ as broad and quite as long as the 
inflated oblong-lanceolate spaths. Ripe seed shining black. — 
Muddy estuaries. P. ? VII. YIII. E. S. I. 
2. Z. marina (L.) : 1. linear 1 — 7-veined, spadix without 
bands, nuts striate.— B. 467. R. vii. 4. — Plant long. L. 
broad. Ped. rather strong. Ripe seed milky white. — Z. angus- 
tifolia, R. viL 3, Sij. E. B. 1430, is a sleuder form growing 
upon mud, ■\\'ith fewer veins in its 1. and rather longer peduncles 
which are much compressed and green upwards and narrovv 
gradually into the spadix. — In the sea. P. ] VII. VIII. E. S. I. 
2. Xaias Liiin. 
1. ^. marina (L.) ; diatcwui, st. dichotomoasly branolied from near the Vase, 
1. linear with many \orgt spinous teeth, sheaths rounded nearly or quite entire, 
fl. solitary male enclosed in a spath, anth. 4-loaular, fr. succulent ellipsoid or 
ovoid narrowing into the stout psrsist^nt style. — /. of B. xxi. (ISSS) p. 353, t. 
241.— Upper intsmixles and backs of 1. often spinous. Stigmas usually 3. — 
Hickling Broad and adjacent channels, Xorf. A. VII. VIII. E. 
2. N.fiex'Uis (Rostk. i: Schmidt) ; [monoE-^ioas] 1. very narrow 
and very minutely denticulate, sheaths ciliate-denticulate. — 
*S'//. E. B. 1432. — ^L. temate or opposite, 1-veioed, pellucid, 
remotelj^ denticulate. [Auth. i-;ocuiar.] Ovary solitary, axillary, 
sessile, oblong. Style short.— Deep lakes. A. VIII. S. L 
['.". m//ior (All.), moncecious, with narrow linear spinous-toothed rccurLtd 
Jaicate 1., truncate sheaths, and l-locular anth., occurs as a Pleistocene fossil in 
Sussex and should be looked for. See J. oj B. xsxTiii. (1900) p. 105, t. 408.] 
3. A', gramin'ea (Delile); mon.jecious, st. branched throughout with many 
simijle lateral br., 1. tufted narrow linear with numerous minute spinous teeth, 
sheaths toothed distinctly auruled, maleji. naked, anth. 4-locular, stigmas 2, ?r. 
solitary or 2 — 4 together, narrowly ellipsoid.— 7. of B. xxii. (1S54) p. 305, t. 250. — 
Canal, Reddish, Lane, probably intr^^dnced with Egyptian cotton. A. VII. — 
IX. E. 
