Flora of the Malayan Peninsula. 87 



Canscora) ; filaments on the corolla-tube ; anthers of 2 parallel cells. 

 Ovary 1- (or imperfectly 2-) celled ; of 2 carpels, superior or stalked or 

 slightly inferior ; style linear or oblong ; stigma capitate or shortly 

 2-lobed ; placentas parietal, sometimes much intruded, partly coalescing 

 in the axis ; ovules very many. Capsule dehiscent or indehiscent, not 

 rarely becoming more or less succulent ; seeds many, albuminous. 

 — DisTRiB. Species 700 ; found in all countries. 



Erect herbs ; lower stem leaves (often all the leaves) opposite : — 



Glabrous ; corolla blue . . . . . , . . 1. Exacum. 



Pubescent all over . . . . . . . . 2. Microrphium. 



Glabrous ; corolla rose-coloured or white . . . . 3. Canscora. 



Twiner ; corolla narrow, more than 1 in. long . . . . 4. Crawfurdia. 

 Floating (or creeping on mud) ; leaves round-ovate : — 



Peduncles solitary, from the axil of a long-petioled leaf . . 5. Villarsia. 



Peduncles clustered, from the axil of a sessile leaf. . . . 6. Limnanthejiuji. 



1. Exacum, Linn. 



Glabrous erect herbs. Leaves opposite, usually 3- to 5-nerved. 

 Floivers panicled, 4- to 5-merous. Calyx deeply lobed. Corolla rotate ; 

 tube globose ; lobes ovate or oblong, blue or white. Stamens attached 

 in the corolla throat ; anthers large, of two oblong cells, which open 

 first by terminal pores or short slits. Ovary more or less completely 

 2-celled ; style linear ; stigma sub-capitate. Capsule globose, septici- 

 dally 2-valved ; seeds numerous, minute, cuboid. — Distrib. Species 

 30, whereof 20 Indian, the others in China, Malaya, Africa. 



Stem 1 to 4 feet ; corolla-lobes ^ in. long, azure blue . . 1. E. tetrcujonum. 



Stem 4 to 12 in. ; corolla-lobes | to J in. long, pale blue . . 2. E. pedunculatum. 



1. Exacum tetragonum, var. /3 stylosa, C. B. Clarke in Hook. fil. 

 Fl. Br. Ind. IV. 95. Stem 1 to 4 feet, quadrangular. Leaves 5 by 1 in., 

 sessile, lanceolate, 3- to 5-nerved. Panicle many-flowered ; bracts at its 

 divisions -25 to "5 in. long, linear ; flowers 4-merous, or rarely 5-merous. 

 Calyx-lobes -25 in. long, ovate acuminate. Corolla-lobes -5 in. long, 

 broadly elliptic acute, full azure-blue. Anthers -2 in. long, straight. 

 Style -5 in. long. Capside globose, -25 in. in diam. E. stylosum (sp.), 

 Griseb. in DC. Prod. IX. 46. E. chironioides, Griseb. Gent. 109, in 

 DC. Prod. IX. 45. E. Horsfieldianum, Miq. PI. Ind. Bat. II. 556. E. 

 sulcatum, G. B. Clarke in Journ. Linn. Soc. XIV. 425 (not of Eoxb.). 

 E. tetragonum, Vidal Fl. Pihp. 191. 



Singapore : Lobb 473. — Distrib. From Burma to Borneo and the 

 Philippines. 



2. Exacum pedunculatum, Linn. Sp. PI. ed. I. 112 ; ed. II. 163. 



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