[Read before the Auckland Institute, September 3, 1952; received by Editor, September 8, 1952.] Abstract S. lenticularis Poir. is replaced in the N.Z. Flora by S. crassiusculus Hook. f. and S. fluitans L. S. merrillii (Palla) Kukenth is added to the N.Z. Scirpus. Three new species and a variety are also added—viz., S. pottsii, S.caligenis, and S. caligenis var. tristigmatosa and S. antipodus. One of the forms placed under S. inundatus Poir is restored to the rank of a species of S. reticularis Col. S. antarcticus L. is not regarded as occurring in N.Z. The spread of the introduced species S. setaceus L. is also noted. Carex inopinata is added to the N.Z. Carices. The occurrence of Carex demissa Hornem, C. scoparia Schkuhr, C. pallescenes L., and C. capillacea Boott in N.Z. is noted, as also are new localities for C. oederi var. cataractae R. Br., C. buchanani, C. carsei. Carex wallii is removed from the N.Z. Flora. Descriptions Of New Scirpus Species Scirpus pottsii sp. nov. aff., Scirpus suleatus Thours var. distigmatosa C. B. Clarke Planta caespitosa, culmi erecti vel diffusi 10–40 cm. alti, lineares tenues valde caniculata ex una parte et leviter caniculata ex altera parte. Folium unum culmi basi vicinum culmo brevius lineare concavum. Spiculae plerumque 2–6 20–50 flores portantes 3–4 mm. longae 2 mm. latae. Bractea erecta 5–20 mm. longa. Glumae carinatae excurrentes nervosae rubrae pictae apice membraneae. Stigmata 2–3 fid exserta 2-fid creberrime. Stamena 1 lineare apiculatum 0.5 mm. longum. Nux elliptico-obovata apiculata biconvexa, plures acute trigona fusco-fulva mature 1 mm. longa 0.7–0.8 mm. lata cellulae parvae superficiem punctatum praebentes. 1/2 glumae aequans. Plant tufted, culms erect or spreading, numerous, 10–40 cm. high, linear; deeply grooved on one side, shallow grooved on the other. Leaves one from near the base of the stem and shorter than it, linear, concave. Spikelets 20–50 flowered, 2–6, seldom more or less. 3–4 mm. long, 2 mm. wide. Bract erect, 5–20 mm. long. Glumes keeled—keel more or less excurrent, nerved, stained red, membraneous at the tips. Styles 2–3 fid, 2 fid predominating. Stamens 1 linear apiculate, 0.5 mm. long. Nut elliptic—obovate, apiculate, biconvex, a few sharply trigonous dull yellow at maturity, 1 mm. long, 0.7–0.8 mm. wide; cells small, giving the nuts a somewhat punctate appearance. North Island: Waioeka River, 1943, Potts; Te Kuiti, 1945, Cook; Opepe, 1934, Atkinson; Tokaanu, 1940, Cook; Nr. Ruapehu, 1931, Zotov; Manganui a te ao River, 1932, Attwood; Ohakune, 1947, Cook; Waverley, 1914, Allison; Ruahine Mts., ca 4,400 feet, 1940, Zotov; Canyon Creek, Tararua Mts., 1944, Allan; Otaki Gorge (no date), Allan. South Island: Mt. Peel, 1915, Allan; Broken River, 1947, Cook; Ashley Gorge, 1947, Talbot. Type Locality. Waimarino Plateau. Co–type in the Auckland Museum; type in the herbarium of the author; No. 2469. A plant of this species was sent for identification to Kew by Carse, and