408 'cix ACANTHACBiE. (C. B. Clarke.) [Hygrophila. 



Wall. Cat. 7150. H. obovata, Nees in Wall. PI. As. Swr. iii. 81, and in BO. Prodr. 

 xi. 91 (not of Wight, nor Ruellia obovata, Moxb.). H. nndalata, Nees in DC. I. c, 

 91, partly (not Ruellia undnlata, Vahl). — Prome; Wallioh. Mergui; Griffith. — 

 Distrib. Java, Borneo. Lateral nerves of the leaves patent, arcuate, prominent, 

 regular. Whorls often dimidiate, but entire often, as in Wallich's type speci- 

 men. 



6. K. quadrivalvis, Nees in Wall. PI. As. Sar. iii. 80, aaid in DC 

 JProdr. xi. 89 ; erect, leaves lanceolate or elliptic narrowed at both ends 

 glabrate, bracteoles oblong obtuse, calyx in flower divided ^ the way down 

 lobes lanceolate minutely strigiUose, capsule mucli exceeding the calyx. H. 

 obovata, Wight Ic. t. 1489 ; Nees in PI. Sohenack. n. 292. H. undulata, 

 Ndes in DC. Prodr. xi. 91, partly. BneUia quadrivalvis. Wall. Cat. 2374, 

 type sheet. E. undulata, Vahl Symb. iii. 82. — Bheede Hort. Mai. ii. 

 t. 46. 



From Bbitgal to Cetlon and Malacca, common. 



Closely resembling S. salicifolia except in the points stated. Leaves usually 

 larger, in Ruellia undulata attaining 4 by IJ in., undulate on margin. Cah/x often 

 gamosepalous long after flowering. Capsule frequently f in., stouter than in S. 

 salicifolia. — Ruellia barbata, Vahl Symb. iii. 83, adduced here by Nees, is stated by 

 Vahl to have biaristate anthers, and his description does not otherwise fit well. 



6. K. ptalomoides, Nees in Wall. PI. As. Par. iii. 80, and in DC. 

 Prodr. xi. 90 ; erect, leaves subsessile elliptic or oblong hairy, whorls of 

 flovvers hirsute often distant, calyx in flower divided half-way down teeth 

 linear hispid. Ruellia phlomoides. Wall. Cat. 2376, type sheet. K. hir- 

 suta, Roxb. Fl. Ind. iii. 51. Dipteraoanthus ciHatus, Nees in Wall. Cat. 

 715. 



BENftAi, SiKKiM and Assam, near the base of the hills ; Cachab, CHiTTAaoMO, 

 Psau. 



Stems 2-3 ft., hirsute upwards. Leaves often 3-6 in., base narrowed, mostly quite 

 sessile. Whorls oi flowers dense ; bracteoles linear-oblong, as long as the calyx-tube. 

 Corolla 5 in. Capsule J in., somewhat exceeding the calyx. 



Vae. Roxhurghii ; branched or decumbent, leaves obovate often shortly petioled 

 usually small hairy or nearly glabrous, calyx-teeth linear-lanceolate, corolla i in. H. 

 obovata, Oriff. Notul. iv. 134. Ruellia obovata,' Soxl. M. Ind. iii. 51 ; Wall. Cat. 

 2375, type sheet. — Chittagong, Roxburgh ; Soonderbunds, J. D. S., &c. ; Pegu, 

 Seddome; Mergui, Griffith. 



Vab. repens ; procumbent, rooting, leaves J-IJ in. obovate, flowers rather smaller. 

 Silhet; S.f.^T.,&c. 



7. K. Incana, Nees in DC. Prodr. xi. 91 (excl. syn. Eoxb.) ; erect, 

 innovations closely softly white-hairy, leaves narrowly lanceolate adult 

 densely lineolate on both surfaces, calyx in flower divided more than half- 

 way down, teeth linear softly white-hairy and hispid. Ruellia incana, 

 Meyne in Herb. Bottler. R. molhssima, Klein ms., not of Vahl. 



DBCCAiir PsiriNStrLA ; Sottler. 



Leaves 4 by | in., very acute at both ends ; petiole hardly any. Capsule i in., 

 shortly exceeding the calyx. — Very distinct by its soft close white hairiness, to which 

 scattered long white hispid haira are added. It is altogether remote from Ruellia 

 obovata, Roxb. (= S. phlomoides, Nees Var.), of which Roxburgh's picture is in 

 Herb. Kew. 



Subgenus 2. Asteracantha. Spinous. Calyx 4i-partite. Seeds 

 4-8. 



8. K. spinosa, T. Anders, in Thwaites Enum. 225, and in Joum. Linn. 

 Soc. vii. 22 ; stout, erect, hispid, leaves Jaaceolatej whorls axillary spiaose 



