THE FLORA OF THE NORTHERN TERRITORY. 91 



Flowers mostly hermaphrodite. Styles or style-branches 2 or 3. Stigmas 

 entire. — 2. Polygonum. 



Flowers more or less dioecious. Styles or style-branches 3 ; Stigmas more 



or less fringed, or rarely entire. — 3. Muhlenbeckia. 



1. RUMEX, Linn. 

 Docks. 



1. R. halophilus, F. v. M. {R. crystallinus, Lange). — ^Gulf of Carpentaria, 

 F. V. Mueller. 



POLYGONUM, Linn. 1735. 



( Ampelygonum, Lindl., 1838 ; Antenoron, Rafin., 1817 ; Asicaria, Neck., 

 1790 ; Bergeria, Koen., 1840 ; Bilderdykia, Dum., 1827 ; Bistorta, Tourn., 

 1737 ; Chylocalyx, Hassk., 1842 ; Echinocaulon, Spach., 1841 ; Goniaticum 

 Stokes, 1812 ; Helxine, Linn., 1735 ; Koenigia, Linn., 1767 ; Lagunea, Lour., 

 1790 ; Persicaria, Linn., 1735 ; Pleuropterus, Turcz.,'12A2> ; Tephis, Adans., 

 1763 ; Thysanella, A. Gr., 1847 ; Tiniaria, Reicht., 1837 ; Tovara, Adans., 

 1763 ; Trachypyron, Ger., 1836.) 



1. P. attenuatum, R. ^r.— Newcastle Waters, G. F. Hill (No. 469), 

 17/7/1911. In waterholes. 



Recorded. Islands of the Gulf of Carpentaria, R. Brown ; Upper Victoria 

 River, Sturt's Creek, Wentworth, Flinders and Macarthur Rivers, F. v. Mueller. 



Note on Herbarium specimen : — Baked ia ashes and eaten by the natives. 

 Camels fatten on this." 



P. plebeium, R. Br., P. barbatum, Linn. — Recorded in National Her- 

 barium Census from North Australia. 



3. MUEHLENBECKIA, Meissn. 1840. 



{Calacinum, Raein., 1836; Conobea, Bert., 1840; Karkinetron, Rafin., 

 1836 ; Sacogonum, G. Don., 1839). 



1. M. Cunninghami, F. v. M. — ^Newcastle Waters, G. F. Hill (No. 478), 

 17/7/1911. Wild scrub near creek. Lignum of some. 

 Victoria River, F. v. Mueller. 



CHENOPODIACEiE. 



Tribe I. Branches continuous. Leaves flat, glabrous, mealy, scaly or 

 glandular. Testa crustaceous. Embryo curved round a mealy albumen. 



Perianths equally 5 or 4-lobed, herbaceous, not much enlarged in fruit. 



Fruit a small succulent berry. — 2. Rhagodia. 



Fruit a dry nut enclosed in the perianth. — 3. Chenopodium. 



Male perianths small, equally 5- or 4-lobed, females much enlarged in 

 fruit with 2 broad appressed segments enclosiag the fruit. — 4. Atriplex. 



Tribe II. Branches continuous. Leaves narrow, entire, flat or terete, 

 glabrous, villous-tomentose or woolly. Testa membranous. Embryo curved 

 round a mealy albumen. 



Fruiting-perianth globular or depressed, membranous, herbaceous or 

 succulent, the lobes horizontally (or rarely conically) closing over the fruit. 

 Seed horizontal or obhque. 



Fruiting-perianths without appendages, succulent or coriaceous, glabrous 

 or the lobes slightly pubescent. — 7. Enchylsena. 



Fruiting-perianth surrounded by 3 or 5 distinct or by 1 continuous annular 

 horizontal wings. — 6. Kochia. 



