447 



(JBNUS XXXill. ASTERACAIJTHA. 



nidynainla Ang^iospermla. Seic .■ Syti > 



Deriv. Fromy/s«er, a star, and Acanthus, a ^pine ; alludingf 

 4o the whorl of spines round the flowers. 



. Gen. ChaIi. Calyx 4-part6d at the base, upper segment a little 

 laygei;, lower one 2-toothed : corolla deeply 2-iipped, upp6r lip 

 2-cleft, lower 3-cleft, bicallose at ,the origin of the segments : 

 staiiieris four, didynanious, connate by pairs at the base : arithera 

 2-Gelled', equal, cells parallel, glabrous, naked : stigma snnple, 

 acuminate : capSule 2-cellpd, compressed, 8-seeded from the base, 

 dissepiment adnata : seeds famished with small retinaoula, ovate,' 

 Compressed, truncate at the base, smooth. — Marshy, annual herbs, 

 thorny, at the joints, narrow-leaved, more or less hirsute : verti- 

 cils of axillary, sessile, braGteated and braoteoled ffewrers, sur- 

 rounded by a; circle of stifi" spines : flowers red. 



(i) A. LONGiFOLiA. (NeeS.) 



. UenL N. ah. E. in Wall. Pi. As. Rar. III. p. 90.— Dec. proU. 

 XI. p. 247. 



Syn. Barleria lorigifolia, Ldnn. — Ruellia longifolia, Roxb. 



Engrav. Wight's Icon. t. 449. — Rheede Mai. II. t. 45. 



Spec. Char. Herbaceous, erect: stem quadrangular: leaves 

 ianceolate, attenuated at both ends, serrulate, ciliated : flowers ses» 

 sile in. the axils, verticilled, blue, surrounded by rigid spines. 



in swampy places, very common, flowering in the rainy season^ 



GENUS XXXiv. NBtTRACANtHUS. 

 Dldynaiula Antriosperinia. Sex-. Syad 



Herii!. From Neuron, a nerve ; alludiiig to the bracts. 



Gen. Csab. Cailyx 2-parted, upper lip 3-cleft, lower 2-clefl; ^ 

 jioroUa 2-lipped, somewhat ringent, upper lip 2-tobthed^ lowes ■ 

 deeply S-cleft : stamens perfect,- four, didynamous, hidden in the ■ 

 tube : filaments very shpl-t : anthers small, 2.caied, cells oblique, 

 pendulous , from the top of the filament, diverging downwards^ 

 tippeir one cristately hairy : the lower cell of the anthers of tha 

 Shorter stamens smaller, incomplete : stigma lateral, oblong (■ 

 ^apstile compressed, 4-sided, ^-seeded from the base : dissepitneiit» 



