Exacum.'] XCYII. GENTIANACEJ:. (C. B. Clarke.) 95 



with two pores, King. Style % in. Fruit not seen. Cotylanthera tennis, Blume 

 Bijd. 708, and Eophylon Lobbii, A. Gray in Journ. Linn. Soc. xi. 23, differ chiefly by 

 having numerous pairs of leaves on the stem ; but all may be one species. 



2. EXACUIVI, Linn. 



Herbs, usually branched. Leaves ovate or lanceolate, usually 3-5-nerved. 

 Cymes terminal and axillary. Cdyx deeply 4-5-lobed ; lobes keeled, winged, 

 or flat. Corolla rotate ; tube short, globose ; lobes 4-5, ovate or oblong, blue 

 purple-blue or white. Stamens 5-4, on the corolla-throat, filaments short; 

 anthers large, oblong, apical pores at length extending usually to the base. 

 Ovary more or less completely 2-celled ; style long, stigma small subcapitate ; 

 placentae large. Capsule globose, septicidally 2-valved. Seeds very many, 

 minute, subcuboid, testa granular. Species 20, mostly Indian ; a few Ma- 

 layan, Chinese, and African. 



* Stem 4-angular (except E. teres) ; corolla large, lobes 4, blue, 



1. E. teres, Watt. Cat. 4354, and in Roxb. Fl. Ind. ed. Carey $ Wall. 

 i. 414 ; stem terete, leaves lanceolate 3-nerved, calyx subquadrangular hardly 

 winged. Griseb. Gentian. 108, and in DC. Prodr. ix. 44 ; Clarke in Journ. 

 Linn. Soc. xiv. 424. Exacum sp., Griff. Itin. Notes, 71 n. 1098. 



TROPICAL HIMALAYA, alt. 0-5000 ft. ; from Nepal to Bhotan, frequent. ASSAM 

 and KHASIA Mxs., alt. 0-4000 ft., frequent. 



Stem 1-4 ft., hardly branched, sometimes with 2-4 obscure lines. Leaves 3^ by 

 f in., sessile or the lower petioled, acute. Cymes from the upper axils forming a 

 lax long panicle. Calyx-lobes in. ovate, acute, with thickened green keels. Corolla- 

 lobes % in., obovate-oblong, acute. Anthers % in. Style in. Capsule in., ovoid. 

 Keduced states occur at the higher levels. 



2. E. tetragonum, Roxb. Hort. Beng. 10, and in Fl. Ind. ed. Carey 8f 

 Wall. i. 413 ; stem quadrangular, leaves sessile broad-lanceolate 5-nerved, 

 calyx-lobes ovate acuminate keeled scarcely winged, anthers \ in. straight. 

 Wall. Cat. 4356, and PI. As. Rar. iii. 47, t. 276; Don Prodr. 128, and in 

 Trans. Linn. Soc. xvii. 531 ; Am. in Ann. Sc. Nat. 2, xi. 175 ; Griseb. Gentian. 

 107, and in DC. Prodr. ix. 44 ; Benth. Fl. Hongk. 233 ; Clarke in Journ. Linn. 

 Soc. xiv. 424. E. Hamilton!!, G. Don Gen. Syst. iv. 213. E. bellum, Hance 

 in Hook. Lond. Journ. Bot. vii. 472. 



N. INDIA, ascending to 5000 ft., common from Kumaon to Central India, Bhotan, 

 and the Khasia Mts. DISTBIB. China. 



Stem 1-4 ft., little branched below. Leaves 5 by J in., acute, or 1 by in., 

 subobtuse. Panicle large and compound, or depauperated few-fld. Buds nearly 

 straight, and corolla subsymmetric. Calyx-lobes - in., sometimes sub-3-winged. 

 Corolla-lobes f in., broadly elliptic, acute, full azure blue (not violet-purple as de- 

 picted by Wallich, nor golden yellow as stated by Don). Style j in. Capsule in., 



VAR. stylosa ; leaves narrower, corolla smaller, anthers rather longer more 

 attenuate. E. stylosa, Wall. Cat. 4355; Griseb. in DC. Prodr. ix. 46. E. chiro- 

 nioides, Griseb. Gentian. 109, and in DC. Prodr. ix. 45. E. Horsfieldianum, Miq. 

 Fl. Ind. Sat. ii. 556. E. sulcatum, Clarke in, Journ. Linn. Soc. xiv. 425, not of 

 Roxb. BURMA ; Prome, Wallich. TENASSERIM ; Mergui, Griffith (Kew Distrib. n. 

 5809); Pegu, M'Clelland; Malacca, Lobb. DISTRIB. Malaya to Borneo and the 

 Philippines. A few flowers on the Pegu example are 5-merous. 



3. E. Perrottetii, Griseb. in DC. Prodr. ix. 45 ; stem quadrangular, 

 leaves sessile 5-7-nerved, calyx-lobes ovate-lanceolate keeled, anthers |- in, 

 straight. Wight Ic. t. 1322. 



