Maf'eriaJs for a Flora of the Malayan Feninsula. 41 



This plant varies as to the number of its leaflets in its leaves and as to pubes- 

 cence. The pedate forms with S-T-puberulous leaflets have been by some authors 

 (among whom is M. Cogniaux, the latest monographer of the Cucurhitacex) con- 

 sidered as belonging to a different species from the plants with trifoliolate glabrous 

 shining leaves ; and the latter has been named G. laxa. After carefully examining 

 about a hundred specimens collected in different parts of British India and 

 Malaya, I find so many that unite to some extent the characters relied upon as 

 distinctive that I have been driven, with all respect to M. Cogniaux, to adopt Mr. 

 Clarke's view that there is but a single species. 



••• "* 9. Zanonia, Linn. 



Climbing herbs ; tendrils simple. Leaves long-petioled, simple, 

 ovate or oblong. Flowers small, dioecious, in large compound pendulous 

 racemes, males pedicelled, females subsessile. Male ; sepals 3, oblong 

 or^ orbicular, concave; corolla rotate, 5-partite, the segments subacute; 

 stamens 5, free, inserted on a fleshy disc, filaments very short ; anthers 

 1-celled, transversely oblong. Female ; calyx and corolla as in the male ; 

 ovary sub-clavate, at first 3-celled ; styles 3, spreading, 2-fid at the apex ; 

 ovules in each cell 2 or many, pendulous, attached in 2 series to a fleshy 

 parietal placenta. Ca])sule large, elongate-cylindric, clavate, 3-valved 

 at the truncate apex. Seeds large, oblong, pendulous, compressed, sur- 

 rounded by a large membranous wing. DiSTEiB. Species 3 ; British India, 

 Malaya. 



Leaves ovate-oblong ; fruit 25 in. long ... ... 1. Z. indiea. 



Leaves ovate-rotund ; fruit 5-8 in. long ... ... 2. Z. Clarkei. 



1. Zanonia indica, Linn. Spec. PI. ed. IT, 1457. Slender, climbing 

 to the extent of 30-50 feet, glabrous. Leaves coriaceous, ovate-oblong, 

 acute ; the base 3-nerved, rounded or somewhat emarginate ; main 

 nerves 6-8 pairs, curved, spreading, prominent beneath ; length 35-6 

 in., breadth 2-35 in., petiole •65-*8 in. Fruit cylindric-campanulate, 

 glabrous, the apex truncate, 2'5 in. long; seet^s flat, thin, 1-5-175 in. 

 long ; the nucleus oval, only '6 in. long, the rest being wing. Blume 

 Bijdr. 937 ; Ser. in DC. Prodr. Ill, 298 ; Roem. Syu. fasc. IT, 117 ; 

 Wight and Arn. Prodr. 340 ; Wight III. t. 103 ; Miq. Flor. Ind. Bat. I, 

 Pt. I, 682 ; Thwaites' Enum. PI. Zey. 124, 442 ; Clarke in Hook. fil. Flor. 

 Br. Ind. II, 633 ; Trimen Flora Ceylon II, 261. 



Perak; King's Collector 7198, 7362. 



2. Zanonia Clarkei, n. spec. King. Slender, 60-80 feet long, 

 glabrous, the young branches deeply grooved. Leaves coriaceous, ovate- 

 rotund, acute ; the base broad, emarginate or slightly cordate, with 5-7 

 nerves radiating from the apex of the petiole (the lateral one on each 

 side small) ; length 2-5~3-5 in., breadth 25-3 in., petiole 75 in., tendrils 

 bifid. Flovjers unknown. Fruit ovoid-cylindi-ic, smooth, 5-8 in. long> 



385 



