THE FLORA OF THE NORTHERN TERRITORY. 233 



Flowers few, sessile within the uppermost leaves or forming leaiy spikes. 

 Leaves sessile, small. 



Leaves linear-lanceolate, rather crowded. Anthers scarcely pointed. 



Style longer than th© stigma. — 8. H. fasciculatum. 

 Leaves ovate or ovate-lanceolate, crowded. Anther points short. 

 Stigma all but sessile. — 7. H. epocrideum. 



Section IIL — Schleidenia. Stigma a thick ring round a central cone or 

 point. Anthers acuminate, cohering by their minutely hairy tips. Corolla- 

 throat bearded ot pubescent inside. 



Corolla-tube scarcely swollen. Style shorter than the stigma. Calyx 

 segments very unequal. 



Leaves obovate oblong or lanceolate, flat. Spikes without bracts. — 



9. H. ovalifolium. 

 Leaves linear -with revolute margins. Spikes bracteate. — 13. H. 

 strigosuns.. 

 Corolla-tube scarcely swollen. Style longer than stigma. Calyx seg- 

 ments about equal. — 17. H. ethelium. 



Corolla-tube swollen round the anthers at or above the middle. Style as 

 long or longer than the stigma. 



Leaves lanceolate. Fruit of a single conical nut, the others inostly 

 acute and above J in. long. Bracts leaf-like. Plant hirsute or 

 pubescent. 

 Stems long and prostrate. Corollar-limb longer than the tube. 



Bracts small. — 13. H. prostratum. 

 Stems diffuse. Bracts longer thjun the calyx, petiolate or con- 

 tracted at the base. — 1. H. bracteatum. 

 Stems ascending or erect. Bracts longer tnan the calyx, sessile. 

 Leaves rather crowded, narrow. Nuts usually 4. — 11. H. 

 pauciflorum. 

 Leaves lanceolate. Fruit of a single conical nut, the others abortive. — 



2. H. conocarpum. 

 Leaves aU narrow -linear, with revolute margins. Bracts rarely ex- 

 ceeding the calyx, usually few and small. Nuts usually scabrous- 

 pubescent. 



Stigmatic cone very short. 



Erect slightly -branched annual. Hairs spreading. LA)rolla- 



tube very slender. — 16. H. ventricoeum. 

 Stem paniculately branched. Hairs appressed. 

 Calyx-segments acuminate. 



Calyx 2 lines long. Leaves linear. — 14. H. tenui- 



foHum. 

 Calyx 1 line long. Leaves filiform. — 10. H. panicuJa- 

 tum. 

 Stigmatic cone long and narrow. Oalyx-segments 1 line long. 

 Leaves linear. — 4. H. Cunninghamii. 

 Lower leaves ovate, petiolate; crowded. Flowering branches elon- 

 gated, with few narrow small bract-like leaves. Nuts very 

 hispid. — 6. H. diveirsifoUuim. 



1. H. bracteatum, R. Br. — Edith Creek and Eleven Mile Creek, near 

 Katherine, GUruth and Spencer, July-August, 1911. 



Borroloola, G. F. HiU (711), 13/1/1912. 

 Islands of the Gulf of Carpentaria, R. Brown. 



2. H. conocarpum, F. v. M. — Sturt's Creek, F. v. Mueller. 



