342 
Flora of the Malayan Peninsula. 
Calyx without wings or ridges : — 
Calyx-segments narrow . . . . . . 7. 
Calyx-segments broad . . . . . . 8. 
Stamens only 2 posterior fertile, inserted within corolla-tube ; 
anterior pair reduced to staminodes on corolla-throat : — 
Calyx 4-lobed, the outer lobes very broad . . . . 9. 
Calyx 5-lobed, the lobes all narrow . . . . . . 10. 
Corolla with upper lip or 2 upper lobes inmost in bud; rarely 
lobes imbnicate : — 
Corolla-tube very short ; lobes 4, sub-equal, imbricate ; stamens 
4, sub-equal 
Corolla-tube elongated; lobes 5, 2-labiate: — 
Calyx tubular, 5-lobed 
Calyx spathaceous, split in front 
.. 11 . 
.. 12 . 
.. 13. 
Vandellia. 
Artanema. 
C drang a. 
Bonnaya. 
SCOP ARIA. 
Striga. 
Centranthera. 
1. Wightia, Wall. 
Large epiphytic climbers, eventually becoming trees. Leaves mostly 
or all opposite, quite entire, coriaceous. Flowers in usually axillary, 
often thyrsoid racemes ; large, rosy or purple, pubescent. Calyx cam- 
panulate, irregularly 3-5-lobed. Corolla-tube incurved, upper lip erect, 
2-lobed, lower spreading, 3-fid. Stamens 4, didynamous, ascending, 
exserted ; anthers oblong, sagittate, cells parallel. Style long, tip 
incurved ; stigma simple. Capsule oblong-ovoid, septicidal, many- 
seeded, valves long, separating from the placentiferous axis, which is 
2-partite or entire. Seeds linear, ascending, nucleus slender, testa 
membranous, broadly winged all round ; albumen 0 ; embryo straight. 
— Distrib. Species 3, all S.B. Asiatic. 
The species of this genus exhibit the primarily epiphytic but subsequently arboreal 
habit characteristic of many species of Ficus. Though often loosely spoken of as 
parasites, and though, as a matter of fact, they frequently strangle the trees on which 
they become established, epiphytes of this class are not parasites in the physiological 
sense. 
Wightia borneensis, Hook. f. in Ic. Plant. XY. 35, t. 1444 
(1883). A tree, 20 feet in height and upwards, commencing life as an 
epiphyte and flowering most freely in that condition. Leaves opposite, 
thinly coriaceous, glabrous as are the lenticellate branchlets, drying 
brown, margin entire, outline elliptic, apex obtusely acuminate, base 
euneate, narrowed to the petiole, main-nerves 2-3-jugate ; length 3 to 
4 in., breadth 1-25 to 1'75 in. ; petiole -75 in. long. Flowers opposite or 
whorled on the rachis of axillary or terminal racemes, pedicels slender, 
rigid, spreading, -5 in. long ; rachis stout, glabrous, erect, 6-10-flowered, 
3 to 6 in. long. Calyx campanulate, margin entire, '4 in. across. 
Corolla trumpet-shaped, incurved, purple, densely beset with a fine 
stellate tomentum, 2 in. long, lobes rounded, throat slightly enlarged. 
Stamens inserted near base of corolla ; filaments slender, far-exserted ; 
