414 cix. ACANTHACE^E. (C. B. Clarke.) \_Ruellia. 



oblong, white-hirsute. Sepals in., linear-lanceolate, glabrous, densely lineolate. 

 Corolla pubescent ; tube long-linear, ventricose for 1 its length. Stamens 4, subequal; 

 anther-cells similar, parallel, minutely white-tailed. Style elongate, branches ^ in., 

 subequal. Capsule many-seeded. This recedes from the genus in the subequally bifid 

 style ; but the corolla-lobes are twisted in bud, and it must be a Huellia or very 

 near it. 



DOUBTFUL SPECIES. 



R. ? INVOLTJCRATA, VaTil Symb. iii. 83 ; leaves short-petioled lanceolate attenuate 

 at both ends entire glabrous, spikes small ovoid hirsute, bracts ovate attenuate quadri- 

 farious. Nees in DC. Prodr. xi. 150. 



INDIA (Madras?); Koenig. 



General aspect of Justicia Gendarussa. Leaves 6-8 by 1-f in., shining, con- 

 spicuously lineolate above. Spikes as large as a hazel-nut ; bracteoles linear, hairy, 

 shorter than the bracts. Calyx as long as the bracts. Corolla hairy in the throat, 

 .^tt/^erssubsagitatteat base. Style simple lanceolate branch. Ovary " pluri-ovulate." 

 Described by Nees from Koenig's specimen The number of the ovules uncertain, 

 and it is impossible to guess the genus. 



R. ? GLANDULOSA, Eoth Nov. Sp. 312 ; shortly villous, leaves petioled ovate- 

 lanceolate subserrate, racemes axillary short subsecund, bracts minute linear-subulate 

 glandular- villous. Nees in DC. Prodr. xi. 153. Ruellia glabra, Heyne. 



INDIA (Madras ?); Heyne. 



Stem 4-angled, geniculate. Leaves 1 in. or a little longer ; petiole ^ in. Racemes 

 nearly horizontal ; peduncle solitary, shorter than the petiole, 5- or 6-tid. ; bracts at 

 the apex of the pedicels 2. Sepals in., equal> linear-subulate, glandular-villous. 

 Corolla scarcely longer than the calyx, unequal, pubescent. The comhinatiou of 

 minute bracts with a corolla hardly longer than the calyx has defeated all attempts 

 to ascertain the genus of this plant. 



XI. ECHINACANTHUS, Nees. 



Erect herbs or undershrubs. Leaves opposite, ovate or oblong, acute' 

 toothed. Cymes lax, short, few-fid., or long compound, axillary, upper form- 

 ing a terminal panicle ; pedicels short or ; bracts small, linear ; bracteoles 

 small or 0. Sepals 5, long, linear, subequal. Corolla tubular- ventricose, 

 nearly straight, widened about the middle ; lobes 5, subequal, rounded, 

 twisted to the left in bud. Stamens 4, didynamous, included ; anthers sub- 

 similar, 2-celled ; cells oblong, parallel, base spurred or not. Ovary with 6-8 

 ovules in each cell; style linear, stigma simple linear. Capsule oblong- 

 linear, 8^-16-seeded nearly from the base ; retinacula stout, hooked. Seeds 

 compressed, discoid, densely hairy, the hairs starting out on applying 

 water. Species 5, all Indian. 



The character of the genus has been here widened to include plants closely 

 resembling Echinacanthus except that the anther-cells are muticous. 



* Anther-cells spurred at the base. 



1. E. attenuatus, Nees in Wall. PL As. Ear. iii. 90, and in DC. 

 Prodr. xi. 168 ; leaves oblong or ovate subdentate, sepals linear viscous- 

 pubescent, corolla 1^ in. puberulous. T. Anders, in Journ. Linn. Soc. ix. 

 459. Euellia attenuata, Wall. Cat. 2345 ; Nees in Wall. PL As. Ear. iii. 83 

 (not Strobilanthes attenuatus, Nees in DC. Prodr. xi. 193). 



CENTEAL and EASTERN HIMALAYA; Nepal, Wallich-, Tambur River alt. 

 2-4000 fc., J. D. H. Sikkim, alt. 4000 ft., Treutler, &c. 



Stems 1-2 ft., pubescent upwards. Lower leaves 3 by 2 in., broadly elliptic; 



