uckans see Corse Trans 5 1:19 26 « BT. 
CAN Ses KK .e¢ Carse . 
220 CYPERACEAE. [Scirpus. 
** Snikelets usually more than 3 in a cluster (sometimes reduced to 1 in small 
states of S. antarcticus and S. inundatus). 
Stems 4-6in. Leaves 1-3, often rigid and cartilaginous. Spikelets 
1-9; glumes rigid, keeled, grooved on the sides. Stamens 3. 
Style-branches 3. Nut acutely trigonous, yellow to dark-brown 9. S. antarcticus. 
Stems 2-12 in., usually slender and flaccid. Leaves 1-2 or wanting. 
Heads often proliferous; spikelets 2-15. Stamen 1. Style- 
branches 3. Nut acutely trigonous, white .. at he 
Stems 8-16 in., rather stout, leafless. Spikelets 6-20, short, oblong. 
Stamen usually 1. Style-branches2. Nut plano-convex, smooth 
and polished, pale is; ay we f. .. 7. 8. sulcatus, 
Stems 1-2 ft., rather stout, flaccid, leafless. Spikelets 10-30, long, 
linear. Stamens 3. Style-branches 3. Nut acutely trigonous.. 8. S. prolifer. 
Stems 1-3 ft., stout, rigid, erect, leafless. Spikelets numerous, 
short, ovoid, crowded. Stamens 3. Style-branches 8. Nut 
obtusely trigonous, brown ; ies te .. 9. S. nodosus. 
be t- Ef.n-2%- 1 291. Ese 
Section II. Desmoschoenus.A@7'all, harsh, rigid and coriaceous. Spikelets numerous, 
spirally arranged around the upper part of the stem. Hypogynous bristles wanting. 
6. S. inundatus. 
Rhizome long. Stems 1-3 ft. Leaves numerous, subsquarrose .. 10. S. frondosus. 
Section III. Eu-Scirpvs. Usually large. Stem leafy at the base or leaves wanting. 
Spikelets usually panicled or umbelled, rarely in heads or solitary. Hypogynous 
bristles present. 
Stems acutely trigonous, 1-2ft. high. Leaves 1-4, trigonous, 
shorter than the stem. Spikelets few, crowded into a small head 11. S. americanus. 
Stems terete, spongy, leafless, 2-6 ft. high. Spikelets in a broad 
panicle or umbel 2-4 in. diam. 7 +e ee .. 12. 8. lacustris. 
Stems acutely trigonous, 1-5 ft. high. Leaves longer than the 
stems, broad, flat. Spikelets in a terminal umbel; involncral 
bracts long, leafy. . ‘5 4 os + .. 13. 8. maritimus. 
B . ae. ; 
1. S. lentieularis/Poir. Encyc. Suppl. v (1817) 103.—Stems slender, 
in very wet places 6-18in. long, elongated and much branched, putting 
out a small tuft of leaves at each node, often forming large floating masses ; 
in drier situations shorter and stouter, much more sparingly branched, 
2-6in. high. Leaves 1-31in. long, filiform in floating specimens, stouter 
in terrestrial ones. Peduncle shorter or longer than the leaves, slender, 
usually 1 from each tuft of leaves, each bearing a single terminal spikelet. 
Spikelets variable in size, }-t+in. long, oblong or oblong-ovoid, obtuse, 
pale-green ; bract (lowest glume) usually longer than the spikelet. Glumes 
ovate, acute, concave but scarcely keeled, green, sometimes stained with 
chestnut-brown. Hypogynous bristles wanting. Stamens 2 or 3. Style- 
branches 2. Nut # the length of the glume, obovoid, biconvex, 
tipped by a minute point, slightly narrowed at the base, smooth, pale.—— 
Benth. Fl. Austral. vii (1878) 326; Oheesem. Man. N.Zi Fl. (1906) 772. 
S. fluitans var. terrestris Benth. l.c. 325. 8. crassiusculus Cheesem. im 
Trans. N.Z. Inst. xv (1883) 300 (not of Hook. f.). Isolepis lenticularis 
R. Br. Prodr. (1810) 222; Hook. f. Fl. Tasm. ii (1860) 86, t. 145p. Isolepis 
fluitans 7. Kirk in Trans. N.Z. Inst. iii (1871) 166 (not of R. Br.). 
Norta Istanp: Auckland—North Cape Peninsula, 7. F.0.; Lake Tongonge, 
H. Carse ! Waikato River, Lakes Whangape, Waikare, and Waihi, 7’. Kirk! T. F.C. ; Lake 
Taupo, 7’. Kirk! swamps near the base of Ruapehu, Berggren! Tryon! A. Hamilton! 
Petrie ! Sea-level to 2500 ft. December—March. 
Also in eastern Australia and Tasmania, and very closely allied to the widely spread 
S. fluitans L. In all probability two species are included in the present circum- 
scription of the species, but my specimens are not sufficiently good to enable me to 
separate them in a satisfactory manner. 
. ~ A_ 
\_/ crass1& BRalus Hie 4 ” Tanans, &T: 1497: 27? 
oot p07 So hah A eeategeailiae 
