Contributions towards a Flora of Ceylon. 155 



perties of plants. In doing so, it besides affords me an oppor- 

 tunity of publicly expressing my thanks to him for the 

 facilities afforded me in gaining a knowledge of the charac- 

 ters of the Barks of commerce, from specimens in his Mu- 

 seum, previous to my departure for South America. 



1. Christisonia grandiflora, Gardn. 



C. Scapo subramoso squamoso, ramis 1-3-floris, pedicellis 

 ebracteatis, lobis calycis lanceolatis acutis sequalibus, corolla 

 (rosea) calyce triplo longiore, limbo bilabiato, lobis sub- 

 aequalibus margine undulato-crenulatis, filamentis glabris, 

 antheris oblongis, calcaribus ascendentibus, sitgmate de- 

 presso-suborbiculare. 



Hab. — Parasitic on the root of a large Acanthaceous shrub, 

 on the ascent of Adam's Peak from Ratnapoora, at an 

 elevation of about 5,000 feet. Flowers in March. 



Descr. — Epirhizal, herbaceous, leafless, glabrous. Roots fibrous, 

 glabrous, brown. Stem subramous, round, glabrous, 2-3-inches 

 long, scaley. Scales ovate, obtuse or acute, brownish, about 4 

 lines long. Flowers 1-3, at the ends of the branches, pedicellate. 

 Pedicels round, glabrous, thickened towards the apex, of a brownish 

 colour, 1 inch long. Calyx free, tubular, 5 -angled, glabrous, brown- 

 ish, 9 lines long : limb 5-lobed, lobes lanceolate, acute, erect, equal. 

 Corolla gamopetalous, hypogynous, infundibuliform, about 3 inches 

 long : limb bilabiate ; upper lip subrotund, 2-lobed, lobes rounded, 

 approximate ; lower lip 3-lobed, lobes obovate, the two lateral ones 

 emarginate, the whole of a pale rose colour, except the base of the 

 lower lip, which is bright yellow. Stamens 4, didynamous, inserted 

 on the lower part of the tube of the corolla : filaments complanate, 

 curved : anthers oblong, cohering, each opening by a single pore 

 at the apex, and with an erect spur about its own length arising 

 from the back of the connective. Ovary free, 1 -celled, with two 

 parietal placentae which stand right and left to the axis of in- 



