Ezacum.] XCVII. GENTIANACEE. (C. B. Clarke.) 95 
With two pores, King. Style } in. Fruit not seen.—Cotylanthera tenuis, Blume 
Bid. 708, and Eophylon Lobbii, A. Gray in Journ. Linn. Soc. xi. 28, differ chiefly by 
having numerous pairs of leaves on the stem; but all may be one species. 
2, EXACUM, Linn. 
Herbs, usually branched. Leaves ovate or lanceolate, usually 3—5-nerved., 
Cymes terminal and axillary. Calyx 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 ; 
Placente 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, Wall. Cat. 4354, and in Roxb. Fl. Ind. ed. Carey & Wall. 
1. 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. 
Tropica Hiataya, alt. 0—5000 ft.; from Nepal to Bhotan, frequent. Assam 
and KnasiA Mrs., alt. 0-4000 ft., frequent. 
, Stem 1-4 ft., hardly branched, sometimes with 2-4 obscure lines. Leaves 34 by 
1 in, sessile or the lower petioled, acute. Cymes from the upper axils forming a 
x long panicle. Ca/yx-lohes } in. ovate, acute, with thickened green keels. Corolla- 
lobes 4 in., obovate-oblong, acute. Anthers 4 in. Style b in. Capsule $ in., ovoid, 
— Reduced states occur at the higher levels. 
2, E. tetragonum, Roxb. Hort. Beng. 10, and in Fl. Ind. ed. Carey § 
Wall. i. 413; stem quadrangular, leaves sessile broad-lanceolate 5-nerved, 
calyx-lobes ovate acuminate keeled scarcely winged, anthers j in. straight. 
Wall. Cat. 4356, and Pl. As. Rar. iii. 47, t. 276; Don Prodr. 128, and in 
rans. Linn, Soc. xvii. 531; Arn. 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. Hamiltonii, G. Don Gen. Syst. iv. 213. E. bellum, Hance 
m Hook. Lond, Journ. Bot. vii. 472. 
N. Inpa, ascending to 5000 ft., common from Kumaon to Central India, Bhotan, 
and the Khasia Mts.—Disrers. China. . 
Stem 1-4 ft., little branched below. Leaves 5 by 1j in., acute, or 1j by 8 in., 
Subobtuse, Panicle large and compound, or depauperated few.fld. Buds nearly 
Straight, and corolla subsymmetrie. Calyz-lobes 4-$ in., sometimes sub-3-winged. 
Orolla-lobes 3. in., broadly elliptic, acute, full azure blue (not violet-purple as de- 
Pieted by Wallich, nor golden yellow as stated by Don). Style & in. Capsule $ in, 
subglobose, 
Var. stylosa; leaves narrower, corolla smaller, anthers rather longer more 
attenuate, `E, stylosa, Wall. Cat. 4355; Griseb. in DC. Prodr. ix. 46. E. chiro- 
p des, Griseb, Gentian, 109, and in DC. Prodr. ix. 45. E. Horsfieldianum, Mig. 
l. Ind. Bat. ii. 556. E. sulcatum, Clarke in Journ. Linn, Soc. xiv. 426, not of 
Soe BURMA ; Prome, Wallich, Tenassertm ; Mergui, Griffith (Kew Distrib. n. 
PR); Pegu, M'Clelland; Malacca, Lobb.—Disrmw. Malaya to Borneo and the 
ilippines.—A few flowers on the Pegu example are 5-merous. 
Na E. Perrottetii, Griseb. in DC. Prodr. ix. 45; stem quadrangular, 
8 ves sessile 5-7-nerved, calyx-lobes ovate-lanceolate keeled, anthers j-j in. 
"eight, Wight Ic. t. 1822. 
