176 Loganiacece. [Gaerinera. 



7. S. potatorum,* Z. / Suppl. PL 148 (1781). Zng-inl, S. 

 T^tta, T. 



Moon Cat. 16. Thw. Enum. 201. C. P. 3719. 

 Fl. B. Ind. iv. 90. Wight, III. t. 156. 



A small tree, bark blackish-grey, corky, deeply furrowed ; 

 twigs smooth, much thickened at nodes, young parts glabrous ; 

 1, 3-5 in., very nearly sessile, ovate or ovate-lanceolate, acute 

 or rounded at base, tapering to subacute apex, glabrous and 

 shining, spuriously 3- or 5-nerved fthe lat. veins coming from 

 lower part of midrib, not from base) ; fl. rather large (for 

 genus), on slender glabrous ped., cymes small, shortly stalked, 

 axillary, glabrous ; cal. glabrous ; cor.-tube \-\ in., broad, 

 lobes 5, nearly as long as tube, oblong-lanceolate, acute, with 

 a villous tuft within; berry i-4 in. diam., nearly black; seeds 

 I or 2, immersed in pulp, nearly | in., circular, bluntly lenti- 

 cular, not greatly compressed, pale yellow, shining with short 

 silvery adpressed hair. 



Dry country, rather rare (?). Dambulla; Uma-oya; Kurunegala; 

 Trincomalie ; Bibile. Fl. November; white. 



Also in Southern India and Burma. 



The seeds are not poisonous; they are used in medicine, but princi- 

 pally for rubbing on the inside of vessels which are then filled with muddy 

 water, when the impurities are immediately precipitated. 



4. aAERTNERA^t Latn. 



Shrubs, 1. opp. (or in whorls of 3), with connate stip., cymes 

 terminal; cal. small, cup-shaped or campanulate; cor.-tubc 

 slightly funnel-shaped, lobes 5 or 4, valvate, thick ; stam. in- 

 serted in cor.-tube and included ; ov. (often half-inferior) with 

 a fleshy disk on summit, 2-celled, with i erect ovule in each 

 cell, styles 2; fruit a berry, subglobose or didymous, i- or 

 2-seeded ; seed with small embryo in horny endosperm. — 

 Sp. 25 ; 7 in Fl. B. Ind. 



L. opposite, in pairs. 



Cymes many-flowered . . . . i. G. KCENIGII. 

 Cymes 3- or 5- flowered. 



Cor. pink, lobes 4 . . . . 2. G. ROSEA. 



Cor. white, lobes 5 3. G. Walkkri. 



L. in whorls of 3 ; fl. solitary . . .4. G. ternifolia. 



* From the use of the seed in clarifying muddy water, whence also 

 the English name of Clearing-nut. 



t In memory of Joseph Gaertner, M.D., F.R.S., a profound and labori- 

 ous botanist. Died 1791. 



