in 



GENUS XXm. DIPTERACANTHUS. 

 Uitlynaniia Aiigio8|teviiiia. Sex: Syst : 



Deriv. From Dis, double, and Pteron, a wiag ; alluding to the 

 pair of large leafy bracts. 



Gen. Chae. Calyx equal, more or less deeply 5-cleft : corolla 

 funnel-shaped, limb nearly equal, 6-cleft : stamens didynamous, 

 included, filaments contiguous or joined together at the base : 

 anthers linear-sagittate, cells parallel^ equal, muticouS : stigma 

 bilamellate, knotted at the base : capsule compressed and seed- 

 less at the base, usually from the middle, rarely nearer from the 

 base, 2-8-12-1 6-s6eded : dissepiment membranaceous in the 

 middle, afterwards in a great measure evanescent : retinacula 

 hooked, praamorse : seeds orbiculate, compressed, surrounded by a 

 divided tumid margin. — Herbs, creeping or erect, rarely shrubs : 

 flowers either all or the lower ones at least axillary, or solitary 

 or fascicled, sessile or peduncled, upper ones generally collected 

 in a small-bracteated raceme : bracts two, large, leafy, often pe- 

 tioled, placed below the calyx or fascicle, smaller and narrower 

 in the racemose parts : bracteoles either none or very small ; 

 capsules by abortion 4 or 2-seeded. 



(1) D. ciLiATus, {Nees.y . 



Idem. N. ab. E. in Wall. PI. As, Rar. 111. p. 87.^Dec. prod, 

 XI. p. 120. 



Syn. Ruellia ciliatus, Spreng. 



Spec. Char. Stem erect, scabrously pubescent : leaves ovate, 

 acute at both ends, repandly crenated, hairy or hirsute : flowers 

 axillary, almost terminal, sessile or capitate, peduncled : common 

 bracts spathulate, petioled : flowers large blue. 



Coromandel, flowering in the cold season. 



(2) D. SiBUA. (Nees.) 



Ideitt. N. ab. E. in Wall. PI. As. Rar. III. p. 81.— Dec. prod. 

 XI. p. 120. 



Syn. llufellia suiiruticosa, Roxb. 



Spec. Char. Stems short, from a creeping rhizome, densely 

 leafy at the apex : leaves elliptic, obtuse, quite entire, hirsute : flow- 

 ers solitary, subsessile, white : bracts obtoiig, longer than the calyx, 



Sukanagur. Dinagepore. Flowering in May. 



