Prof. Don's Descriptions of Indian Gentianese. 631 



ratis, corolla campanulata calyce breviore, stigmatibus globosis, capsula 



subrotunda. 

 Canscora pusilla. Wall. Cat. n. 4366. G. Don Si/st. Gard. ^ Bot. iv. p 199. 

 Pladera pusilla. Roxb. Fl. hid. i. p. 403. 

 Hopea dichotoma. Vahl. En. i. p. 3. 

 Exacum sessile. IFilld. Sp. PL i.p. 635. 

 Habitat circa urbem Dehli. Royle. O . 



As we have before observed, an evident affinity is established between the 

 Scrophularine(B and Gentianea; by means of this genus, which comes near to 

 the GratioletB both in habit and structure, as may be seen by comparing 

 C. deciissata with Torenia asiatica. The C. pusilla departs from the rest of 

 the genus by its globular stigmata and by the form of its calyx and corolla, 

 and on these accounts it would seem to constitute the type of a distinct group, 

 to which the name of Hopea ought to be restored. 



Gen. XI. EXACUM. Brown. 

 ExAci sp. L. 



Calyx 4-fidus, Corolla rotata, 4-fida, marcescens : tubo ventricoso. Stamina 4, 

 exserta, declinata : ^/awew^a teretia: antkerce elongatae, apice ecalloste, 

 rima brevi dehiscentes ; dejloratas strictae. Stylus declinatus. Stigma 

 indivisum, clavatum. Capsula globosa, Crustacea, 2-locularis : valvis 

 raargine introflexis. Placenta} 2, spongiosse, septo completo adnatse, 

 dtm^m utrinque liberae. Semina minutissima, scrobiculata. 



Herbse (Indise Orient.) annua;, erectce, ramosce, foliis oppositis subsessilibus 

 3 — b-nerviis,Jloribus axillaribus terminaUbusque luteis v. purpureis. 



1. E. pedunculatum, diffusum; foliis petiolatis oblongis 3-nerviis, calycibus 



tubum corollae subaequantibus. 

 Exacum pedunculatum. Limi. Sp. PL p. 163. ff^illd. Sp. PL i. p. 634. 

 IValL Cat. n. 4359. 

 Habitat in India orientali ad Nourungabad. © . 



2. E.tetragonum, strictum ; foliis subamplexicaulibus ovato-lanceolatis acutis 



5-nerviis, floribus 4-fidis, calycibus corollae tubo mult6 longioribus, geni- 

 talibus declinatis. 



3 z 2 



