Cyperacee.] FLORA OF TASMANIA. 81 
better ones founded on the insertion of the style. The species with the scales imbricated all round the spikelet 
should technically be referred to Zsolepis, but would be most unnaturally associated with the other species of that 
genus. —Generally harsh, wiry plants, with creeping rhizomes (or tufted culms), and terete or trigonous, solid, inar- 
ticulate culms, leafy at the base or all the way up. Spikelets axillary or terminal, fascicled, panicled, or solitary 
(not densely packed in a globose terminal capitulum, as in Gymnoscheenus). Scales distichous or rarely imbricated 
all round, of few dark-brown, hard, chartaceous scales, the outer smaller and empty, the inner bearing one flower 
each. Stamens 3. Nut trigonous, without hypogynous scales or bristles. (Name from oxowos, a Rush.) 
l. Scheenus fluitans (Hook. fil.) ; culmis flaceidis densissime cæspitosis elongatis gracillimis longe 
fluitantibus foliatis, foliis anguste linearibus flaccidis, spicula terminali solitaria lineari 2-flora, squamis 4 
lineari-lanceolatis subacutis compressis membranaceis nitidis, staminibus 3, nuce elliptica trigona angulis 
costatis, stylo elongato filiformi persistente basi non incrassato, stigmatibus 3 deciduis. (Tas. CXLI. B.) 
Has. South Esk River, Gunn.—(Fl. Jan.) (Gunn, 1432.) 
A very singular plant, in habit unlike its congeners, and resembling Isolepis fluitans very closely.—Oulms 
densely tufted, rooting at the base in gravel, the main part floating, 2 feet long, very flaccid, and much branched, 
Leaves narrow-linear, with membranous sheaths and an evident ligula. Spikelets solitary, terminal, bright pale- 
chesnut, shining, linear, narrow, nearly } inch long, much compressed, two-flowered. Scales membranous, not 
nerved ; lower shorter, all linear-lanceolate, subacute. Nut pale-brown, small, smooth, with a very long persistent 
style, from which the three stigmas fall away. Filaments capillary, brown, persistent.—PraTE CXLI. B. Fig. 1, 
spikelet ; 2, scale and flower; 3, pistil :—all magnified. 
Gen. III. CHZETOSPORA, Br. 
Omnia Scheni sed sete v. squamule hypogyne 3 v. plures. (Ab Gymnoscheno habitu tantum differt.) 
The presence of hypogynous bristles or scales alone distinguishes this genus from Schenus, and its habit from 
Gymnoschanus. There are very many Australian species, some of which can hardly be separated specifically from 
others of Scheenus, except by the above character. (Name from yarn, a hair, and «opos, a seed.) 
1. Cheetospora tenuissima (Hook. fil.) ; rhizomate repente, culmis gracillimis nudis trigonis sul- 
catis foliis filiformibus brevioribus, spicula disticha terminali solitaria lanceolata 1-flora, squamis enerviis 
interioribus elongatis, sguamulis hypogynis 3 brevissimis obtusis, stylo basi bulboso-incrassato cum ovario 
articulato.—Lepidosperma tenuissima, Muell. in Herb. Hook. (Gunn, 1416.) (Tas. CXL. B.) 
Has. Moist sandy places near Hobarton, @unn.— (Fl. Oct.) (v. v.) 
DisrriB. South-eastern Australia: Wilson's Promontory, Mueller. 
A glabrous, wiry, smooth species. —Rhizome creeping, very stout. Culms much shorter than the long, flexuous, 
semiterete, deeply channelled leaves, erect, trigonous, grooved, bearing one erect, compressed, lanceolate, acute 
spikelet. Spikelet 4 inch long. Scales brown, smooth, nerveless, opaque, with pale membranous borders, one of 
the uppermost ones alone bearing a flower. Style glabrous, bulbous at the base, and jointed on to the ovary; the 
three stigmas exserted.—PrATE CXL. B. Fig. 1, spikelet; 2, scale and flower; 3, pistil :—all magnified. 
2. Chzetospora capillacea (Hook. fil.) ; rhizomate repente, culmis nudis capillaribus, foliis capil- 
laceis, spicula solitaria (v. 2 altera pedicellata) infra apicem culmi lanceolata compressa 2-3-flora, squamis 
enerviis interioribus elongatis extimis aristato-acuminatis, setis hypogynis 3 linearibus, stylo bifido basi 
villoso. (Tas. CXLI. A.) 
Has. Dry sandy banks: near Hospital Bay, South Huon River, Oldfield. 
A very slender species, with capillary culms, and leaves 8-10 inches long.—Rhizome tufted and creeping. 
Culms thread-like, erect. Spikelets one or two towards the apex of the culm, minute, 4 inch long, narrow-lanceolate, 
dark-brown; when there are two, one is pedicelled. Scales distichous, outer with long apices, two or three inner 
VOL. II. Y 
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