346 Materials for a Flora of the Malayan Peninsula. 



4. KoKOONA, Thwaites. 



Trees with opposite petioled coriaceous leaves. Calyx small, 

 5-lobed. Petals 5, free, coriaceous, witliout crests. Stamens 5, inserted 

 on the margin of the disc ; anthers oblong. Disc thick, glandular, 

 sub-entire. Ovary immersed in the disc, 3-celled ; style short, stigma 

 3-lobed ; ovules 4 in each cell, in 2 series, adnate to the axis, ascending. 

 Capsule woody, oblong, 3-gonous, S-celled, 3-valved ; cells 4-seeded. 

 Seeds broadly winged above, imbricate, exalbuminous. — Distrib. Species 

 5 ; CeyloQ, Malayan Peninsula and Borneo. 



The only tangible distinctions between this genua and Lophopetalum appear 

 to be that (1) in this there are no appendages of any kind on the petals, whereas 

 in iop?ioj9eteZu7>i they are lamellate or crested (or both) on the anterior surface; 

 (2) the disc in this is cupular and the stamens are inserted either on its edge or on 

 the inner vertical surface of its up-turned edge ; (3) the ovary is not buried in the 

 disc, whei'eas in LopJiopetalum the disc is broadly orbicular and flat and the stamens 

 are inserted (often in pits) half way between its centre and circumference, the 

 ovary being buried in the disc. The seeds, which used to be relied upon for distinctive 

 marks, are found, now that the ripe fruit of Lophopetalum is better known, to be 

 winged in both, and the fruit in both to be an elongated triquetrous or 3-winged 

 capsule. It seems doubtful whether this genus should be maintained as distinct 

 from Lophopetalum. 



Panicles much longer than the leaves, 4 to 6 



in. long ; flowers '1 in. in diam. ... 1. K. littoralis. 



Panicles shorter or only a little longer than 



the leaves ; flowers "25 or "3 in. in diam. 



Leaves elliptic or elliptic-oblong, 2*75 to 



3"6 in. long ... ... ... 2, K. Scortechinii. 



Leaves broadly ovate to ovate-oblong, 4'5 



to 5 in. long ... ... ... 3. K. coriacea. 



1. KoKOONA LITTORALIS, Laws. in Hook. fil. Fl. Br. Ind. I, 617. 

 A tree ; leaves thinly coriaceous, broadly ovate, acute or sub-cuspidate, 

 entire, siibundulate, the base rounded ; main nerves 8 to 10 pairs, 

 spreading, faint ; length 3 to 4 in., breadth 2 to 2'5 in., petiole "8 to 1 

 in. Panicles axillary or terminal, large, 4 to 6 in. long and about as 

 much across, many-flowered, bracteolate, the branches divergent, the 

 branchlets cymose. Flowers "1 in. in diam., the pedicels about as long. 

 Calyx lobes sub-acute. Pe^aZsnot crested or fimbriate ; filaments inserted 

 on the edge of the disc. Disc orbicular and without appendages. Fruit 

 capsular, broadly 3-winged, 4*5 in. long and 1'5 in. broad, the pericarp 

 coriaceous ; Seeds 1'5 to 2 in. long, oblong, compressed, winged all 

 round. Lophopetalum littoralis, Kurz For. Flora Burma, I, 255. Trigono- 

 carpus littoralis, Wall. Cat. No. 6520. 



Malacca : Maingay. Singapore ; Lobb. — Distrib. Burma. 



632 



