108 THE FLOEA OF THE NORTHERN TERRITORY. 



Stems hard and almost woody at the base, the radical leaves soon dis- 

 appearing. Leaves all narrow. Flowers 3 to 4 lines. 



Stem tall, pubescent. Corolla-tube shorter than the free part. 

 Stamens the length of the petals. Capsule short, obtuse. — 4. 

 P. longi flora. 

 Stems short, glabrous. Corolla-tube longer than the free part. 

 Stamens much longer than the petals. Capsule oblong, tapering 

 at the top. — 6. P. spirostyles. 

 Stems herbaceous, several from a rosette of oblong or obovate radical 

 leaves. Stem leaves narrow. Flowers 1| to 3 lines. 

 Ovary sessile. — 8. P. synandra. 



Ovary stalked. Capsule 3-valved. — 9. P. brevianthera. 

 Ovary stalked. Capsule 4-valved. — 10. P. triloba. 

 Section II. Aylmeria. — Petals and stamens free or nearly so, with 5 

 short staminodia inside the petals and opposite to them. 



Sepals purple, glabrous, nearly 3 lines long. Stamens and petals shghtly 

 perigynous. — 11. P. violacea. 



Sepals white or yellowish, hairy, about 2 Unes long. 

 • Stamens and petals very perigynous. — 7. P. staminodina. 

 Section III. Polycarpia. — Petals and stamens free or united in a ring at 

 the base, without staminodia. 



Stems simple or hard and woody at the base. Radical leaves soon dis- 

 appearing. 



Stamens 5, sepals pointed. 



Flowers IJ lines. Petals rounded and very obtuse. Capsule 



much shorter than the sepals. — 2. P. corymbosa. 

 Flowers less than 1 Une. Petals oval-oblong, acute, or toothed 

 at the top. Capsule rather shorter or longer than the 

 sepals. — 1. P. breviflora. 

 Stamens 3, sepals obtuse and bi-lobed.' — 12. P. Holtzei. 

 Stems herbaceous, several from a rosette of oblong or obovate radical 

 ■eaves. 



Flower-heads pedunculate, with scarious bracts. — 5. P. spicata. 

 Flower-heads closely sessile, surrounded by herbaceous floral 

 leaves. — 3. P. involucrata. 



1. P. breviflora, F. v. M. — Bacon Swamp, Spencer and Gilruth, 1911. 

 N. Coast, R. Brown ; Gulf of Carpentaria, F. v. Mueller. 



2. P corymbosa, Lam. — Lat. 19 degrees, long. 130 degrees (No. 439a), 

 G. F. Hill, 4/7/11 ; Pine Creek ; Glen of Palms, E. Giles. 



N. Coast, R. Brown ; Victoria River and Albany Island, F. v. Mueller ; 

 Lizard Island, Keppel's Island, and Port Curtis, M'Gillivary. 



3. p. involucrata, F. v. M. — Hooker's Creek, Sturt's Creek, and near the 

 sources of the Victoria River, F. v. Mueller. 



4. P. longiflora, F. v. M. — Grassy Flats along the Victoria River and other 

 parts of Amhem's Land, F. v. Mueller; N.W. Coast, Bynoe ; Nichol Bay, 

 Walcot ; var. leucantha, Victoria R., F. v. Mueller. 



.5. P. spicata, Am. — N.W. Coast, Bynoe. 



6. P. spirostyles, F. v. M. — Gilbert's River, F. v. Mueller ; Poit Essington, 

 Leichardt. 



7. P staminodina, F. v. M. — Sources of the Victoria River, Hooker's 

 Creek and Sturt's Creek, F. v. Mueller. 



