456 Flora of the Malayan Peninsula. 



Filaments of the stamens twisted spirally around the style ; 

 corolla-lobes "2 in. long : — 



Leaves more or less oblong, with 6 to 8 pairs of main nerves ; 



corolla glabrous without ; fruit 4 to 7 in. long . . . . 1. P. spiralis. 



Leaves more or less ovate, with 10 to 12 pairs of main nerves ; 



corolla pubescent without ; fruit 2-5 to 3 in. long . . 2. P. Kunstleri. 



Filaments of the stamens not twisted spirally around the style : — 



Corolla-tube cylindric-urceolate, lobes spreading, -075 in. 



long ; disk deeply lobed ; calyx-lobes with no or very small 



scales at base within ; main nerves of leaves 6 to 8 pairs . . 3. P. steiiocarpa. 



Corolla-tube campanulate, lobes erect, -3 in. long ; disk 



entire or undulate ; calyx-lobes with a broad ihin scale at 



base within ; main nerves of leaves 8 to 10 pairs . . 4. P. penangiana. 



1. Paesonsia spiralis, Wall. Cat. 1631 (1828). An evergreen 

 twining glabrous shrub ; branchlets terete. Leaves subcoriaceous 

 when green, membranous when dry ; ovate-oblong or oblong-lanceolate, 

 shortly somewhat abruptly and often obliquely acuminate at apex, 

 acute or rounded at base ; pale when dry, especially on the lower 

 surface ; 3 to 7 in. long, 1-5 to 3-5 in. broad ; midrib rather broad, 

 slightly raised beneath ; main nerves 6 to 8 pairs, the lowest pair close 

 to the base, starting at an angle of about 60° and arching upwards to 

 anastomose near the margin ; secondary nerves few, also the reticula- 

 tions ; petiole slender, -5 to 1 in. long, often twisted at base ; stipular 

 glands small, subulate, the bases of each pair connected by a stipular 

 ridge. Cymes axillary, many-flowered, corymbose, 1*5 to 3 in. in 

 diameter ; peduncles variable in length, 1 to 4 in. long ; secondary 

 peduncles usually 3, -5 to 1 in. long ; branches usually 3-chotomous ; 

 ultimate pedicels slender, about -25 in. long ; bracts and bracteoles 

 small, ovate ; flowers greenish or yellowish with a red centre ; buds 

 clavate, with short tube and obtusely conical top. Galyx-tnhe short ; 

 lobes ovate, acute, ciliate, sparsely pubescent without, -1 in. long, 

 fmTaished with an ovate-acute sometimes bifid scale at the base of each 

 inside. Corolla-tuhe cylindric, "125 in. long, glabrous on both surfaces, 

 villous at the throat ; lobes "2 in. long, oblong, acute, erect or spreading. 

 D^'s^-lobes triangular. Stamens inserted near the base of the tube ; the 

 filaments spirally twisted together, sparsely pubescent ; anther-tails 

 incurved at the base, anther-tips acuminate, hooked. Ovary ovoid, 

 glabrous ; style slender ; stigma columnar with a bifid apex and short 

 basal auricular ring. Fruit linear-lanceolate, acuminate, 4 to 7 in. long, 

 •75 in. broad, somewhat compressed, smooth, striate, glabrous. Seeds 

 •5 to '75 in. long, slender, enlarged below, narrowed and cut away on 

 one side above, and furnished with pale golden-brown coma, "75 to 

 1-5 in. long ; cotyledons narrow, oblong, about -25 in. long ; radicle 



