

Tlmnbenjia] LXXXI. ACANTHACE.E H'T 



III. Calyx of 5 lobes or sepals, ovules two in each cell. 



One anther-cell higher than the other. 



Anther-cells spurred, bracts linear, short . . Josticia (p. 498). 



Anther-cells acute, bracts ovate, large . . Adhatoda (p. 498). 



Both anther-cells on the same level. 



Stamens 2, corolla-tube long linear . . .4. D.f.dalai antiics. 



Stamens 4, corolla-tube ventricose . . . Petalidium (p. 499). 



Stamens usually 4, corolla tubular- ventricose, 

 calyx persistent. ...... 5. Strouilaxthes. 



IV. Calyx nf ."> lobes, ovules 3 or more in each cell. 



Bracts small, often caducous, stamens 2. 



i Virol la 2-lipped, lobes spreading . . . .6. Phlogacakthus. 



Corolla-lobes e^ual, erect CYSTACANTHUS (p. 501). 



Bracts as long as or longer than calyx, stamen- 1. 



Bracts linear, branehlets densely woolly . . .Eciiuantiieica (p. 501). 



Bracts lanceolate, imbricating, branehlets and 



I. rough Hemigraphis (p. 501). 



1. THUNBERGIA, Linn. £. ; Fl. Brit, Ind. iv. 390. 



Herbaceous or shrubby climbers, fl. fof the sp. mentioned > in brae tea te 

 racemes, each fl. enclosed in bud by two large bracteoles, more or less cohering 

 at the margin. Calyx an entire or indistinctly crenulated ring. Corolla 

 conspicuous, tube ventricose, curved, limb oblique, lobes rounded. Stamens 4, 

 disk annular or cushion-shaped, ovules 2 in each cell. Capsule globose, 

 narrowed suddenly into a flat beak. Species 70-80, Africa to Australia. 



A. ( Jorolla blue. 



1. T. gTandiflora, Etoxb. ; Wight Ie. t. 872, Sikkim Terai and outer valleys. Assam. 

 Khasi hills. Manipur, Cachar, China, L. ovate, base cordate, often angularly lobed, 

 basal nerves 5-7, blade 4-7, pet. 1-6 in. Racemes short, bracteoles 1 in, falcate- 

 elliptic. 2. T. laurifolia, Lindl. Burma, Qpper and Lower, Andamans. — Malay Penin- 

 sula. L. from an acute i>r n amded base ovate-lanceolate, 'lent ate, basal nerves usually 3. 

 3. T. Wightiana, T. And. (Sclimidia bicolor, WigW lo. t. 1848). Nilgiris, 1. ovate, 

 acuminate, toothed, racemes pendulous (3-12 in. long, bracteoles conspicuous, purple 

 and cream-coloured, orbicular. 1 in. diam., with 7 longitudinal nerves. 



B. Corolla red or yellow. 



I. T. coccinea. Wall. Outer Himalaya 2-7,000 ft., from Kumaon eastwards. Khasi 

 hills, Tenasserini, I. ovale, acuminate, toothed, racemes lax, ixuidulous, 6-18 in. long, 

 bracteoles broadly ovate, purple or dark orange. 5. T. mysorensis, 'P. And. (He.racrnlris 

 myiorenris, Wighl [c. t. 871). Nilgiris, Mysore. L. lanceolate or ovate-lanceolate. 

 toothed, strongly veined, racemes elongate pendulous, bracteoles falcate-elliptic, I in. 

 long, corolla j ellow. 



■2. ACANTHUS, Linn. : Fl. Brit. Ind. iv. 480. 



Herbs or shrubs, sometimes twining, 1. often spinescent. Sepals 4, the 

 outer pair larger, corolla-tube short, horny, limb expanded into a large entire 

 or :!-1oIh>(I lip, the upper lip wanting. Stamens I. anthers 1-celled adnata, 

 bearded and Eringed, ovules 2 in each cell. Capsule compressed shining, I- 



Seeded. Species 20, warm and let regions of the did World and Australia, 

 some species littoral, others inhabiting dry and arid regions. As usual, the 

 littoral species have the structure of xerophilous plants. 

 A. Armed erect shrubs. 



t. A. ilicifolius, Linn. (Dilivaria ilieifolia, Nees; Wight tc. t. 159). Vera. Moranna, 

 Vendli, Mar.; Bargota, Kt n(£i,Beng. ; Khaya, Burm. Tidal forests ol the Peninsula, 

 Bengal and Burma, often forming the underwood under mangrove trees. Malay 

 Renins, and Arohip. extending to A.usl ralia. An evergreen spinescent shrub, according 

 to Schimper (Indo-Mal. Strandf often standing on stilts like Rhizophora. I.. 



glossy, rigidly -ia. k. lobed or toothed, the lobes or teeth terminating in sharp 



prickles, Made I 8 in., petiole Bhorl or none. ki. supported by two pan- ,.i bract 



|-Jl in. long, in terminal. Bometimes axillary. I spikes I 1-' in. long, corolla 



i\ in. long, bright bine, capsule shining, blunt, J 1 in. long. 2. A. cbracteatus, Vahl. 



B K 



