ITygropIiila.'l Lxxxviii. acanthace^e. 545 



ceolate or almost linear, contracted into a sliort petiole, 3 or 4 in. long in 

 stout specimens, half that size in others. Flowers usually 3 or 3 together in 

 the axils of the stem-leaves, purple or pale blue (or yellow according to DaU 

 lacJiy), Bracteoles concave, acute, usually shorter than the calyx. Calyx 

 pubescent, tubular, the lobes shorter than the entire part, the 3 lower ones 

 often more united. Corolla-tube scarcely exceeding the calyx, upper lip 

 2-lobed, the lower lip 3-lobed, convex, with 3 lines of hairs decurrent from 

 the sinus, the lobes all nearly equal, slightly contorted or almost valvate in 

 the bud. Stamens inserted near the top of the tube. Capsule linear, about 

 i in. long. Seeds about 6 to 8 in each cell. — T. Anders, in Journ. Linn. 

 Soc. ix. 456, with the synonyms adduced; Ruellia salicifolia, Vahl, Symb. 

 iii. 84 i Sygropliila angustifolia, E. Br. Prod. 479; Nces in DC. Prod. xi. 



ol. 



N- Australia. Van Dicmen's Gulf, N.W. coast, A, Ciinnivgham ; Victoria river, 

 "« Mueller ; Port Essiugtou, Armsirong, 



Qneeusland. Endeavour river. Banks and Solander, R. Brown ; "Roctingham Bay, 

 ^allachy\ Broad Sound, Bowman; Beddome Creek, Thozet ; Moreton Bay, W. IIUL 



It lias appeared to me that the aestivation of the coroDa-lobes is somewhat variable in 

 Wyfjrojphila, but the overlapping is often so slight as to make it difficuU to ascertain it cor- 

 rectly from dried specimens. 



L 



5. ETJEIiIilA, Linn. 



(Diptcracaathns and Cryphiacanthus, Nees,) 



Calyx more or less deeply divided into 5 lobes or segments. ^Corolla- 

 lobes 5, nearly equal, spreading, contorted in the bud. Stamens 4, included 

 in the corolla-tube ; anther-cells parallel and equal. Ovules 6 or more in 

 each cell of the ovary. Capsule oblong-linear or clavate, more or less con- 

 tracted and seedless at the base, very rarely equally 2-celled throughout. 

 Seeds flat ; retinacula hooked, often denticulate at the top.— Herbs or rarely 

 shrubs. Flowers usually blue, mostly axillary, solitary or clustered, rarely in 

 terminal or axillary spikes. 



A considerable gciins, distributed over the warmer regions of the New and the Old 

 "World. The Australian species are perhaps all endemic, although one of them is very 

 closely allied to an E. Indian one. 



Sect. I. 'Hi^tBY^caxit'hvLS,— Bracteoles mnalhj hnger and Iroadev than the cahjx. 

 Capsule contracted m- flattened and seedless at the base. 



Corolla with a slender tube of 1 in., the broader portion or throat half 



as long. Capsule f in. Flowers t^donculate 1. -S- oracteata. 



Corolla-tube very shortly slender at the base, the throat much longer. 



Capsule \ in. long. Flowers nearly sessile. , 



Corolla -throat nearly 1 in. long 2. R, pnmulacea. 



Corolla-throat scarcely ^ in. long 8. 72. corynolheca. 



Sect. II. CrypLiacantlius.— ^r^c^^^/^j Vmear-suhulate, shorter than the calyx of 

 none. Capsule equally 'l-celled from the hase or nearly so. 



riowers sessile in the axils or nearly so. Bracteoles shorter than the 



calyx 4. R austrahs. 



Flowers distant in axillary leafless spikes. Bracteoles very small - ' ^' ^' sptcijiora, 



Flowers solitary on elongated pedicels. Bracteoles noue . . . . o- -«• aeanns. 



VOL. IV. -i N 



