THE FLOEA OF THE NORTHERN TBEBITORY. 257 



Calyx-limb large, scarcely toothed, but splitting on one side or into 2 

 lobes. Plant glabrous. 



Leaves under 1 in. long, narrowed at the base. Corolla-tube dilated 



upwards, longer than the calyx. — 1. G. eduhs. 

 Leaves broadly ovate. Corolla-tube cylindrical, scarcely exceeding 

 the calyx-lobes. — 5. G. resinosa. 



Calyx-Umb with 4 to 6 linear obtuse lobes, rarely cohering. Young shoots 

 pubescent. 



Leaves obovate or oblong, ynder 1| in. long. Fruits under 1 in. long. 



— 4. G. pyritormis. 

 Leaves broadly ovate or orbicular, 2 to 3 in. long. Fruits 1| to 2 in. 

 long. — 3. G. megasperma. 

 Calyx-Hmb campanulate, truncate, with long subulate-acuminate teeth. 

 Corolla-tube long and cylindrical. — 6. G. sufEruticosa. 



Calyx-teeth distinct from the base. Fruit large. Plant glabrous. — 2. 

 G. fucata. 



1. O. edulis, F. v. M. — Gilbert River and between Flinders and Lynd 

 Rivers, F. v. M. 



2. 0. fucata, R. Br. — Gulf of Carpentaria, R. Brown. 



3. G. megasperma, F. v. M. — ^North Island, GuU of Carpentaria, G. F. 

 Hill (No. 622), 20/10/1911. Darwin, N.T., G. F. Hill, 12/11/1914. Stapleton, 

 N.T., G. F.Hill, 5/11/1914. Cambridge GuH and Vansittart Bay, N.W. 

 Coast, A. Cunningham ; rocky places, Victoria River, F. v. Mueller ; islands of 

 the GuK of Carpentaria, R. Brown. The specimens of Gardenia megasperma 

 from Darwin and Stapleton, N.T., show several variations, both from the tjrpe 

 species and from one another. These may be due to cultivation, and in order 

 to fuUy determine these points it would be necessary to make an examination 

 on the spot. The variations are mainly seen in the flower and fruits. The 

 flower varies very much in size, in length of pedicel, in size of calyx, length of 

 calyx-tube and calyx-lobes, and the length of the corolla-tube. The 

 shape of the fruit varies from globular to pear-shaped, and in size from 

 2 to 3 inches. 



Var. arborea, Ewart and Cookson, 28 mUes S.E. Newcastle Waters, N.T., G. 

 F. Hill (No. 498), 8/7/1911. A tree up to 20 feet high, whichseems intermediate 

 between Gardenia megasperma and G. pyritormis. It resembles the former in the 

 structure of the fruits, which are globular, about 2 in. long, with large seeds 

 and 5 parietal placentas, while it resembles the latter in the leaves, which are 

 oblong-ovate. However, as no flowers are present on the specimen, the exact 

 determination is impossible, and what now appears to be a variety only may 

 in reality be a distinct species. 



4. G. pyriformis, A. Cunn. — ^York Sound, N.W. Coast, A Cunningham ; 

 Victoria River, Bynoe. 



5. G. resinosa, F. v. M. — Rocky hills, Victoria River, F. v. MueUer, 

 Bynoe. 



6. G. suffruticosa, R. Br. — Gulf of Carpentaria, R. Brown. 



6. CANTHIUM, Lam., 1783. 



(ClusiophyUea, BailL, 1878 ; Dondisia, DC, 1830 ; Lycioserissa, Roem. 

 & Schutt., 1819 ; Psydrax ; Plectronia, Linn., 1767 partly ; Mitrastigma, 

 Harv., 1842 ; PhaUaria, Schum. & Thoim., 1827 ; PsHostoma, Klotzsch., 

 1837 ; Psydrax, Gaertn., 1788 ; Webera, Cramer., 1803.) 



