220 THE FLOEA OF THE NOETHERN TEREITOEY. 



3. STRYCHNOS, Linn. 1735. 



(Atherstonea, Pappe., 1862 ; Brehmia, Harv., 1842 ; Chemicia, Scop 

 1777 ; Curae, Humb. 1819 ; Ignatia, Linn., 1781 ; Ignatiana, Lour., 1790 

 Lasiostcma, Schreb., 1789 ; Narda, Veil., 1825 ; Rouhamon, Aub., 1775 

 Unguacha, Hochst., 1844.) 



S. lucida, B. Br. — ^Near Darwin, GUruth and Spencer, July-August, 

 1911. 



Recorded. Islands of. the Gulf of Carpentaria, R. Brown ; Cambridge 

 Gulf, Regent's River, and Goulbum Island, A. Cunningham ; Treachery 

 Bay and Victoria River, F. v. Mueller ; N. W. Coast, Marten. 



The Austrahan Species have not been found to contaia any poisonous 

 substance. Strychnine and Brucin occur in the seeds of S. Nux-vomica and S. 

 Ignatii, the seeds of S. Rheedii and S. aculeata contain Brucia only, while 

 those of S. potatorum and others contain no poisonous alkaloids. 



4. PAGRAEA, Thunb. 

 1. F. racemosa, Jahk. — Providence Hill, E. v. Mueller. 



GENTIANACEAE. 



Tribe I. Eugantianeae. Terrestrial plants. Leaves opposite. Corolla 

 lobes contorted or otherwise imbricate in the bud. Testa of the seeds mem- 

 branous. 



CoroUa-tube cylindrical or short ; lobes spreading, contorted in the 



bud. Styles deciduous. — 1. Erythraea. 

 Corolla-tube cylindrical ; lobes spreading, imbricate in the bud. 

 Calyx narrow, tubular, shortly 4-toothed. — 2. Canscona. 



Tribe II. Menyantheae. Aquatic or marsh plants. Leaves radical or 

 alternate, sometimes floating. Corolla-lobes with broad margins, induplicate 

 in the bud. Testa of the seeds crustaccous. — ^3. Limnanthemum. 



1. ERYTHRAEA, L. C. Rich, 1796. 



(Centaurella, Delarb., 1800 ; Centaureum, Rupp., 1745 ; Centaurium, 

 GUib., 1781 ; Gyrandra, Griseb., 1845 ; Hippocentaurea, J. A. Schultes, 1814 ; 

 Schenkia, Griseb., 1853 ; Xanthera, Reichb., 1841.) 



1. E. austrodis, R. Br. (E. spicata,persoon). — Camp III. Lander Creek, 

 G. F. Hill (311), 10/6/1911. 



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

 River, F. v. Mueller; Mchol Bay, IST. W. Coast, Ridley's Expedition. 



Australian Centaury. Useful Tonic-herb. 



2. CAlSrSCORA, Lam. 



{Orthostemon, R. Br.) 



1. G. diffusa, R. Br. — Between Victoria and Fitzmaurice Rivers, F. v. 

 Mueller. 



3. LIMNANTHEMUM, S. P. Gmel., 1770. 



(Limnanthus, Neck., 1790 ; Nymphoides, Tourn., 1789 ; Schweyckerta, 

 C. Gmel., 1805 ; Trachysperma, Ra'hi., 1808 ; Villarsia, J. F. Gmel., 1791 ; 

 Waldschmidia, Wigg , 1780 ; Liparophyllum.) Marsh-wort. 



