THE FLORA OF THE NORTHERN TERRITORY. 163 



Section I. Glochidion. — Trees or shrubs the leaves often large, stamens 3 

 or more, the anthers erect and sessile on a central column, free or more or less 

 3onnate, the cells parallel with the connective projecting beyond them. Ovary 

 3 or more celled. Styles short, thick,' erect, often connate at the base. No 

 glands or disk in either sex. — 7. P. Ferdinandi. 



Section II. Synostemon. — Undershrubs, shrubs or perennial herbs. Leaves 

 small. Stamens 3, the anthers adnate to a central column, the cells parallel. 

 Ovary 3-celled. Styles distinct or connate at the base. No glands or disk in 

 either sex. 



Male perianth-segments narrow, erect, herbaceous or rigid, united or free. 

 Hoary or glaucous undershrubs or rarely small shrubs. 



Styles thick but free. Stems from a woody base decumbent or 

 ascending. Leaves rather rigid, glaucous. 

 Leaves sessile, the lower ones cordate, the upper ones ovate. 



— 6. P. ditassoides. 

 Leaves linear. — 1. P. Adami. 

 Styles more or less connate or very short. Stems branching, 

 ascending or erect. 



Male perianth-segments free. Leaves ovate or obovate, sessile. 

 Branches much compressed or angular. — 15. P. ochrophyllus. 

 Male flower unknown. Leaves ovate, short, rigid. Branches 

 nearly terete, hoary-tomentose. 

 Leaves under J-in. — 18. P. rigidulus. 

 Leaves J-in. or more. — 11. P. Hunti. 

 Male perianth-segments small, spreading. — 17. P. rhytidospermus. 



Section III. Kirganelia. — Shrubs, often large. Leaves distichous, 

 usually petiolate. Stamens 5, the filaments usually connate at the base. 

 Glands present. Ovary and capsule 3 or more-celled, usually fleshy or succu- 

 lent. Styles distinct or connate at the base, short in the AustraUan species. 



. Pedicels fiHform, under 2 Unas, but mostly longer than the perianth. — 

 16. P. reticulatub. 



Pedicels mostly shorter than the perianth. — i. P. baccatus. 



Section IV. Paraphyllanthus. — Shrubs or herbs of varied habit. Stamens 

 3, the filaments free or more or less united. Anthers free, the ceUs parallel, 

 opening longitudinally. Glands present. Ovary 3-celled. Styles free. Cap- 

 sule dry. 



Filaments more or less united. 



Flowers nearly sessile. Capsule tuberculate. — ^21. P. Urinaria. 

 Pedicels 1 to 3 Unes long. Ovary tuberculate. Capsule smooth. — 



20. P. trachygyne. 

 Flowers nearly sessile. Ovary and capsule smooth. — 13. P. maderas- 

 patanus. 

 Filaments free. 



Fruiting perianth much enlarged, usually as long as or longer than 

 the capsule. 

 Glabrous or glaucous plant. Stems decumbent from a woody 



base. — 8. P. flagellaris. 

 Glabrous or glaucous. Shrubby and branched. Seeds striate. — 



9. P. grandisepalus. 

 Minutely hoary-tomentose. Fruiting-perianth less enlarged. — 



5. P. Carpentarise. 

 Tomentose or villous plant, shrubby and branched. Capsule 

 sprinkled with hairs. — 10. P. hebecarpus. 



