THE FLORA OF THE NOETHERN TERRITORY. 185 



12. ;S'. virgata, Hook.— 25 miles S.W. of Borroloola, G. F. HiU (No. 573), 

 7/9/1911. Recorded. Sandstone table-land of the Upper Victoria River, 

 F. V. Mueller. 



5. HIBISCUS, Linn. 1737. 



{Abelmoschiis, Medic, 1787 ; Azanza, B.C., 1824; Bamia, B. Br., 1830; 

 Bombycodendron, Zoll., 1847 ; Cotyloplecta, Alef., 1863 ; Furcaria, Kostal., 

 1836 ; Hymenocalyx, Zenk., 1835 ; Ketmia, Tourn., 1737 ; Laguruiea, Oav., 

 1787 ; Lagunaruia, Reichb., 1828 ; Munchusia, Heist., 1838 ; Pariti, Adans., 

 1763 ; Paritium, St. Hil., 1827 ; Pentaspermum, B.C., 1840 ; Petitia, Neck., 

 1790 ; Polychlaena, Garcke., 1867 ; Solandra, Murr., 1785 ; Triguera, Cav., 

 1786 ; Trionaea, Medic, 1787 ; Trionum, Linn., 1735 ; Triplochiton, Alef., 

 1863 ; Fugosia.) 



AU yield good fibre (Hibiscus hemp).-. 



Section I. Bracteoles f ree (sometimes very deciduous). Calyx 5-toothed, 

 splitting open on one side and deciduous. Tall annuals. {Abelmoschus, Medic). 



Glabrous or the inflorescence tomentose. Bracteoles small, falUng off 

 from the young bud. Flowers white. — 4. H. ficuLaeus. 



Hisjpid. Bracteoles 8 to 12, linear, persistent. Flowers red. — 12. H. 

 rhodiopetalus. 



Section II. Bracteoles free. Calyx shortly 5-lobed, inflated. Herb 

 with deeply lobed leaves. {Trionum, Medic). — 17. H. trionum. 



Section III. Bracteoles free. Calyx deeply 5-lobed, the lobes 1 or 3- 

 nerved, without thickened margins. Seeds bordered or covered by long 

 woolly hairs. Low or slender shrubs or undershrubs. {Bombicella, D. C). 



Plant densely and rigidly velvety-tomentose. Leaves ovate or lanceolate, 

 mostly undivided. Bracteoles small. — 8. H. microchlaenus. 



Plant closely and densely tomentose. Leaves orbicular, mostly broadly 

 3-lobed, — 11. H. Piaonianus. 



Section IV. Bracteoles free. Calyx deeply 5-lobed, the lobes with a 

 central nerve and thickened nerve-hke margins. Seeds glabrous. Tall herbs or 

 shrubs, often more or less armed with short prickles (except the last 2 species). 



Herb glabrous or with scattered hairs. Calyx ribs ciliate. Flowers white 

 or pink. — 1. H. cannabinus. 



TaU shrubs, glabrous or with scattered hairs. — 6. H. heterophyUus. 

 Tomentose or densely villous shrubs, without prickles. Calyx tomentose 

 or villous. 



Flowers 1| to 2 in,, long. — 18. H. zonatus. 

 Flowers about |-in. long. — 2. H. Coatesii. 

 Section V. Bracteoles free. Calyx deeply 5-lobed, the lobes 1 or 3- 

 nerved, without thickened margins. Seeds glabrous or shortly pubescent. 

 Low or slender shrubs or imdershrubs glabrous, scabrous-pubescent or bristly 

 hispid. 



Leaves undivided. 



Scabrous-pubescent. Leaves ovate-lanceolate or oblong. — 7. H. 



leptoeladus. 

 Glandular viscid and rigidly setose. Leaves broad-cordate or orbicu- 

 lar. — 13. H. setulosus. 

 Leaves deeply divided. 



Glabrous or nearly so. Calyx fin. long. Capsule hispid. — 10. H. 

 pentaphyUus. 



Hirsute and densely setose. Calyx not Jin. Capsule glabrous. 



5. H. geranioides. 



