14 Contributions to the Queensland Flora. 
Order NAIADACEZ. 
POTAMOGETON, Linn. 
P. tricarinatus, F. v. M. Submerged leaves almost all decayed 
before flowering, lanceolate, semi-translucent, few-nerved. pper. 
(floating) leaves coriaceous, elliptical, 14-13 in, long,. #-1 in. broad, 
15-17 nerved, petioles ?-1} in. long, Shania Stipules soon decaying, 
7-1} in. long, acute, semi-translucent, but the veins not prominent, 
plea iee: moderately stout, 14-1} in. long. Spikes dense-flowered, 
2-14 in. long. Perianth segments Grhiontae Fruit 14 lines long, com- 
pasa the central keel and lateral ridges prominent, carinated, and 
turberculated, central keel extending to the depression.—A Benn., 
Journ. Bot. XXV, (1887), 177 (nomen nudum) ; F. v. M. and A. Benn., 
Journ. Bot, XXX, (1892), 229 (descript.), Bail. Queens, Fl, , page 1709 ; 
Comprenhs, Cat, Queens, Pl., p. 583, fig. 563 ; Ascherson and Grasbner, 
Potamogetonacee in, Engl. Pflanzenr. IV., 11, p. 54; P. natans, 
Benth. (non. Linn.) Fl. Austr, VII. 170 ; Bail. Queens. FIl., p. 1709, 
Hab.: A common species in pools in Southern np aS We have no 
Queensland specimens of the true P. natans in our herbar 
Order CYPERACEA. 
CYPERUS, Linn. 
C. laevigatus, Linn.; Benth. Fl. Austr, VII, 263. Rhizome usually 
creeping, stems 6 in, to 14 ft. high, enclosed at the base in 2 or 3 brown 
sheaths, one of which is often produced into a short erect rigid leaf, 
Spikelets 6-12 together or sometimes only 2 or 3 in a sessile cluster 
apparently lateral, the longest of the 2 invclucral bracts being erect 
and continuous with the stem, Spikelets lanceolate or broadly linear, 
flat, rather thick, with a longitudinal groove on each face, 4-5 or rarely 
6 lines long, 2 lines broad, with about 30 flowers, the rhachis not win 
Glumes closely imbricate, obtuse, broad, and concave, the keel seacrdeby 
prominent, nerves very faint. Style 2-cleft. Nuts broadly obovate or 
orbicular, flattened, the broad inner face next the rhachis mostly about 
half the length of the glume. 
Hab. ase ab C. T. White. (Field Naturalists’ Club Excursion, 
Easter, 1916 
i insole species ; in Australia previously recorded from 
New South Wales, South Australia, and West Australia, 
By Authority: ANTHONY James Cumminc, Government Printer, Brisbane. 
