988 LXXIX. APOCYNACfi^. [Tabernamonta'^a. 



2. T. pubescens (plant pubescent), R. Br. Prod. 468 ; Benth. Fl. Austr. iv. 

 311. A shrub or tree very near to T. orientalis, and perhaps a variety only, 

 the branches and both sides of the young leaves softly pubescent, the older 

 leaves becoming glabrous or nearly so on the upper side, the leaves otherwise 

 as in T. orientalis or rather larger. Inflorescence of T. orientalis, but more or 

 less hairy. Flowers larger. Calyx-lobes about 1 line long, very obtuse, hirsute. 

 Corolla-tiibe fully ^in. long, and the lobes more than half the length of the tube. 

 Fruit like that of T. orientalis and as variable in size, from f to lin. long. — A. 

 DC. Prod. viii. 376. 



Hab.: Cape York. M'Gillivray, Darnel; Port Denison, Fitzalan ; Eockingham and Edgecombe 

 Bays, Dallachy. 



T. ebracteata, R. Br. Prod. 468, A. DC. Prod. viii. 376, from Groote Island, Gulf of Carpen- 

 taria, appears to be a less luxuriant form of the same species, with the leaves more obtuse and 

 from 2 to 4in. long.— Benth. 



10. LYONSIA, E. Br. 



(After Israel Lyons.) 



Calyx with an irregular ring of minute glands inside at the base or with 

 few or none. Corolla-tube cylindrical, often very short ; lobes linear or 

 lanceolate, valvate in the hud, bearded inside at the base or along the surface. 

 Stamens inserted at or below the middle of the tube, the filaments short, 

 not twisted or very rarely slightly so ; anthers oblong or linear, exserted, 

 cohering in a cone or ring round the stigma, each with 2 rigid basal lobes 

 usually devoid of pollen. Hypogynous scales 5, as long as the ovary, free 

 or more or less connate. Ovary 2-celled, with numerous ovules in each cell ; 

 stigma surrounded by a ring or membranous expansion at the base, usually 

 2-lobed. Fruit elongated, nearly terete, separating more or less completely into 

 2 follicles, leaving the placentas free, either 1 in each follicle or the two united 

 into one between the open follicles. Seeds with a coma or tuft of long silky 

 hairs at the hilum. — Tall woody or slender climbers. Leaves opposite. Flowers 

 in terminal or axillary corymbose cymes. Bracts small. 



The genus is limited to Australia. It is closely allied to Parsoniia. Mr. Bentham considered 

 the best distinguishing character was that of the valvate corolla-lobes of Lyonsia, more especially 

 pointed out by A. Gray, and almost, if not quite exceptional in Apocynacea. But even this 

 character he thought deceptive, and must be observed in the bud, for the overlapping in some 

 species of Parsonsia is so slight that, from the appearance of the expanded flower, the sestivation 

 has been described as valvate. 



Corolla-lobes flat, shorter than or scarcely longer than the tube. Slender 



nearly glabrous plants. Cymes loose, few-flowered, mostly terminal . 1. L. lilacina. 

 Corolla-lobes lanceolate, not above twice as long as the tube. 

 Glabrous or minutely pubescent. Cymes mostly in terminal panicles. 

 Leaves lanceolate-elliptical or almost ovate. 

 Leaves smooth above. Corolla-lobes bearded at the base only. 



Follicles thin, 2 to Sin. long,' placentas connate 2. L. straminea. 



Leaves reticulate above. Corolla-lobes bearded above the middle. 

 Follicles hard, 6 to Sin. long, placentas usually separate .... 3. i. reticulata. 

 Rusty-pubescent or villous. Cymes mostly axillary and opposite. 

 Cymes divaricately-branched, the flowers not crowded. Calyx- 

 segments broad and short . 4. L. Langiana. 



Flowers crowded in small clusters on the loosely-branched cymes. 



Calyx-segments narrow-acute 5. L. largijlorens. , 



Corolla-lobes linear, 4 or S times as long as the tube. Cymes corymbose 

 with numerous flowers. 

 Inflorescence all terminal. Leaves ovate, membranous . . . . . 6. L. latifolia. 

 Inflorescence axillary and terminal Leaves coriaceous, on long petioles, 



broadly oblong, obtuse ... .... 7;" L. oblongifolia. 



Infloresoenee in one axil. Leaves long-lanceolate, acuminate, on short 



petioles . - 8. L. eucalyptifolia. 



