270 THE FLORA OF THE NORTHERN TERRITORY, 



Leaves radical, not forming a bulb, the lamina thin, obovate-orbicular. 

 Tropical species. 



Calyx -lips undivided, short and broad. Corolla-lobes nearly equal. — 



10. S. rotundifolium. 

 Calyx lower lips 3-partite. Corolla with 2 lobes much longer and bifid. 

 Very slender, sUghtly granular. Flowers white. — 11. S. 



schizanthum. 

 Rather more rigid and glandular. Flowers pink. — 6. S. 

 lobuliflorum. 

 Stem shortly developed below the terminal tuft of leaves and peduncles. 

 Tropical species. 



Leaves linear-subulate. Peduncles 1 -flowered. — 9. S.pedunculatum. 

 Leaves oblanceolate or spathulate. Stem thick and hard. Flowers 



corymbose. — 8. C. pachyrrhizum. 

 Leaves petiolate, orbicular, membranous (J to 1 in.). — 7. S. muscioola. 



1. S. alsinoides, R. Br. — Victoria River towards Stokes Range and Wick- 

 ham River, Gulf of Carpenteria, F. v. Mueller. 



2. S. fissilobium, F. v. M. — Grassy, inundated places on the Victoria River, 

 Isetween main camp and Steep Head, F. v. Mueller. 



3. S. Floodii, F. V. ilf.— Lander Creek, G. F. Hill (313), 10/6/1911. 

 Recorded. Gravelly banks of the Upper Victoria and Roper Rivers, 



F. V. M. 



4. iS. floribundum, R. Br. — Islands of the Gulf of Carpentaria, R. Brown ; 

 moist, shady places at the sources of Wentworth River, and near M'Adam 

 Range, F. v. M. 



5. S. leptorrhizum, F. v. M. — GreviUe's Island, Regent River, N. Coast, 

 A. Cunningham ; dry pastures on the Victoria River and between M'Adam 

 Range and Providence Hill, F. v. Mueller ; Port Essington, Armstrong. 



Var. ^ilosum, Benth. — Van Diemen's Gulf, N.W. Coast, A. Cunningham. 



6. 8. lobuliflorum, F. v. M. — ^Moist, sandy pastures on the Victoria River, 

 near Steep Head, F. v. Mueller. 



7. 8. muscicola, F. v. M. — In tufts of moss near springs and cataracts on 

 the Upper Victoria River, F. v. Mueller. 



8. 8. 'pachyrrhizum, F. v. M. — Pastures between Providence Hill and 

 M'Adam Range, F. v. Mueller. 



9. ;S. pedunculatum, R. Br. — Port Essington, Armstrong. 



10. 8. rotundifolium, R. Br. — Plains at the foot of M'Adam Range, F. v. 

 Mueller ; Hunter's River, York Sound, A. Cunningham. 



11. 8. schizanthum, F. v. M. — Moist pastures on the Victoria River, F. v. 

 Mueller. 



12. 8. tenerrimum, F. v. M. — Margins of swamps between M'Adam Range 

 and Providence Hill, F. v. Mueller. 



8. calcaratum, R.B. — Recorded from North Australia in National Her- 

 barium Census. 



COMPOSITE. 



Tribe I. Vernoniaceoe. — Leaves alternate. Flower-heads discoid, the 

 florets all tubular, hermaphrodite and regular or nearly so. Involucre imbri- 

 cate. Anthers usually obtuse at the base, without tails. Style-branches 

 subulate and acute, not swollen at the base. 



