Flora of the Malayan Peninsula. 
375 
Order LXXXVII. BIGNONIACEiE. 
Trees or climbing shrubs, more rarely herbs. Leaves opposite, 
rarely whorled or alternate, entire or 1- 2- 3-pinnate or digitate ; 
leaflets entire or sometimes toothed. Inflorescence of terminal racemes 
or panicles ; bracts various ; flowers showy, usually large, hermaphro- 
dite, irregular or regular. Calyx gamosepalous, campanulate, truncate 
or spathaceous or 2-5-lobed, valvate. Corolla gamopetalous, tubular- 
ventricose, mouth 2-lipped ; lobes 5, sub-equal, patent or erecto-patent, 
bilabiately imbricate in bud. Stamens alternate with the corolla-lobes, 
inserted on the tube, 5 or more usually 4 from the fifth being absent 
or rudimentary ; filaments filiform, often slightly thickened and some- 
times hairy at the base; anthers 2 -celled, included or shortly exsert ; 
cells oblong or Unear, parallel or divergent, dehiscing longitudinally. 
Disk hypogynous, cushion-like or annular, sometimes absent. Ovary 
sessile or shortly stalked, superior, 1-2-celled ; style long, filiform ; 
stigma of 2 flattened ovate or oblong lobes ; ovules numerous, usually 
horizontal, anatropous, inserted in 2 to many rows in vertical lines along 
the edges of the septum in each cell. Fruit generally an elongate 
capsule, loculicidally or septicidally bivalved ; the septum enlarged in 
fruit, deciduous together with the placentas. Seeds transverse, affixed 
by their margins to the septum or to enlarged placentas, vertically 
compressed, discoid or trigonous, often with a broad wing, embryo 
usually enveloped in a fine interior membrane ; exalbuminous, coty- 
ledons flattened, sometimes folded, radicle stout, lateral. — Distbib. 
Tropical regions of the world, a few in warm temperate regions ; 
absent from Europe, the Mediterranean region and New Zealand. 
Species about 50. 
Stamens 5 ; a tree with opposite 2-3-pinnate leaves and very 
large flat capsules 
Stamens 4 ; trees : — 
Anther-cells 2, both perfect : — 
Leaves 1-3-pinnate : — 
Calyx spathaceous, split on one side 
Calyx lobed or truncate : — 
Septum of the capsule cylindric, spongy : — 
Septum prominently pitted ; seeds trigonous, trans- 
versely grooved without, inner lobe fitting into the 
septum-pit ; ovules 2-seriate in each cell 
Septum only faintly pitted ; seeds flat ; ovules many- 
seriate in each cell 
Septum flat, capsule winged; a large tree with large 
flowers . . 
1. Oroxylum. 
2. Dolichandrone. 
3. Stereospermum. 
4. Badermachera. 
5. Pajanelia. 
