196 THE FLORA OS THE NORTHERN TERRITORY. 



Recorded. Gulf of Carpentaria, R. Bro^vn ; Dampier.'s Archipelago, A. 

 Cuimingham ; Port Essiagton, Armstrong ; Arnhem's Land, to Lat. 32 degrees 

 on the E. Coast, E. v. Mueller. Spade Flower. 



PASSIFLORACEiE. 



ADENIA, EoRSK. 



Modecca, Lam. ; Clemanthus, Klotzsch. ; Kolbia,, P. de B. ; Kera- 

 manthus, Hook). 



1. A. australis, {B. Br.), Engl. — Cygnet Bay, A. Cunningham ; N.W. 

 Coast, Bynoe. 



THYMELAEACEffi. 



Stamens 2. Perianth-lobes, 4:. — 2. Pimelea. 



Stamens twice as many as perianth-lobes. Shrubs or small trees. — 1. 

 Wikstroemia. 



1. WIKSTROEMIA, Endl. 



1. W. indica, C. A. Mey.- — Arnhem N. Bay, R. Brown ; Cleveland Bay, 

 N.W. Coast, A. Cunningham. Poisonous to stock. 



2. PIMELEA, Banks and Soland. 1788. 



(Banksia, Forst, 1776 ; Calyptrostegia, C. A. Mey., 1845 ; Cookia, J. F. 

 Gmel., 1791 ; Oymnococca, Fisch., 1845 ; Macrostegia, Turcz., 1852 ; The 

 canthes, Wickstr., 1818). Riceflower. 



Section I. Thecanthes.- — Involucral bracts united into a 4-lobed cup. 

 Perianth-tube glabrous, not circumsciss. Glabrous annuals. 



Involucral lobes very broad, shorter than the entire part, usually marked 

 with forked veins. — 5. P. punicea. 



Involucral lobes reaching to about the middle, with the midrib also 

 prominent. — 2. P. concreta. 



Section II. Dithalamia. — Flowers (small) strictly dioecious. Male 

 perianth with a slender tube ; anthers with a narrow connective, the cells very 

 distinct, and after they are open placed back to back ; ovary abortive or 

 rudimentary. Female perianth wholly persistent with small lobes divided to 

 the ovary, or rarely with a short tube and tardily circumsciss. Fruit not at 

 all, or shghtly succulent. Leaves opposite, flat, or nearly so. — 4. P. micro- 

 cephala. 



Section III. Epallage.- — Flowers hermaphrodite or more or less dioecious. 

 Perianth-tube usually circumsciss after flowering, leaving the lower portion 

 persistent round the fruit. Anthers rather flat, with a broad dorsal connective, 

 the cells closely parallel on the inner face, the whole anther rolled back usually 

 after floweriag. Flowers in clusters or heads, rarely sohtary, or in dense 

 oblong spikes. 



Flowers strictly dioecious. Leaves alternate, softly silky- villous.-r-l. 

 P. ammocharis. 



Flowers hermaphrodite, or in some specimens female. — 3. P. Holroydi. 



1. P- ammocharis, F. v. 31.- — On Sandhills, 70 miles N. of Camp IV., 

 G. F. Hill (396), 28/6/1911. 



Recorded. Upper Victoria River and Sturt's Creek, F. v. MueUer ; 20 

 miles S. of Port Nichol, N.W. Coast, Maitland. 



