168 THE FLOEA OF THE NOBTHEEN TEEEITOEY. 



Leaves deeply 3-lobed, the middle lobe ovate-oblong, obtuse, not acumin- 

 ate. Styles free rarely exceeding the capsule. North-western and Western 

 species. — 2. A. tomentosa. 



1. A. acerifoUa, Hook. — ^Victoria and Fitzmaurice Rivers, F. v. Mueller. 

 Cotton-bush. 



2. A. tomentosa, Gaud. — ^N.W. Coast, Carew River, A. Cunningham ; 

 Depuech Island, Bynoe ; Nichol Bay and De Gray Rivers, Ridley's Expedition ; 

 Point Larrey, Hughan. 



15. SEBASTIANIA, Speeng. 



( Adenogyne, Klotzsch., 1841 ; Cnemidostachys, Mart., 1824 ; Ditrysinia, 

 Rafin., 1825 ; Elachocroton, F, v. M., 1857 ; Gussonia, Spreng., 1821 ; 

 Microstachys, A. Juss., 1824 ; Tragiopsis, Karst., 1859). 



1. S. chamelaea, F. v. Jf .— 60 miles N.E. of Camp II., G. F. Hill (No. 272), 

 7/6/1911. Islands of the Gulf of Carpentaria, R. Brown, Henne ; Victoria 

 River, F. v. Mueller ; Goulburn Island, A. Cunningham ; Port Darwin, 

 Schultz (No. 539) ; Beagle Bay, N.W. Coast, Hughan. 



16. EXC(ECARIA, Linn. 



The bark yields caoutchouc in abundance. 



Leaves obovate or broadly elliptical, obtuse, entire or crenate, 2 to 3 in. 

 long. — 1. E. Agallocha. 



Leaves narrow-oblong, very obtuse, entire, | to 1 in. long. — 2. E. parvi- 

 folia. 



1. E. Agallocha, Linn. — ^Islands of the Gulf of Carpentaria, R. Brown ; 

 Sweers ; Saltwater Banks of Victoria River, F. v. Mueller ; Goulburn Island, 

 A. Cunningham ; Port Darwin, Schultz (Nos. 597, 677.) 



Milky Mangrove, River Poison-tree, Blinding-tree. Bark contains 13-15 

 per cent, tannin. 



2. E. parvifolia, Muell., Arg. — Common round the Gulf of Carpentaria, 

 R. Brown, F. v. Mueller, Landsborough. " Gutta-percha tree." (Lands- 

 borough). Yields a very handsome cabinet wood. 



17. EUPHORBIA, Linn. 1737. 



{ Aledoroctonum, Schlecht, 1847; Anisophyllum, Haw., 1812; Antha- 

 cantha, Lem., 1858 ; Athymalus-, Neck., 1790 ; Chamaesyce, S. F. Gr., 1821 

 Chylogala, Fourr., 1869 ; Dactylanthus, Haw., 1812 ; Epurga, Fourr., 1869 

 Esula, Rupp., 1745 ; Gelarhoeus, Haw., 1812 ; Keraselma, Neck., 1790 

 Lacanthis, Rafin., 1836; Lyciopsis, Schweinf., 1867; Medtisea, Haw., 1812 

 Petalandra, F.v. M., 1862 ; Poinsettia, R. Grah., 1836 ; Tithymalus, Tourn., 

 1742 ; Treisia, Haw., 1812 ; Zalitea, Rafin., 1836). 



Section I Anisophyllum. — Leaves all opposite with small interpetiolar 

 stipules. Involucral glands usually bordered by a petal-like appendage 

 (except E. Atoto and E. pilulifera). Seeds without any carunculus. 



Flower-heads in small distinct terminal cymes with the floral leaves or 

 bracts as long as or longer than the involucres. Capsules and whole plant 

 glabrous. 



Seeds smooth. Appendages of the involucral glands scarcely conspic- 

 uous. — 3. E. Atoto. 

 Seeds rugose. Appendages conspicuously petal-like, entire. — 9. E. 



MitchelUana. 

 Seeds rugose. Appendages more or less lobed. — 11. E. myrtoides. 



