Scrophularinee. 351 
and toothed. Scapes bracteolate, bearing numerous drooping 
tubular scarlet flowers. A native of the Andes. 
Besides the above enumerated plants of this order there is a 
large tribe of very handsome plants still almost unknown in 
cultivation, on account of the difficulties experienced in raising 
them artificially, due to the fact that they are mostly partially 
_parasitical in the natural state on the roots of the plants they 
are associated with. This section includes amongst others the 
genera Gerdrdia, Pedicularis, Melampyrwm, and Castilleja. 
Orper LXXIX.—_BIGNONIACEZE. 
Handsome shrubs or herbs of trailing, twining or climbing 
habit, or more rarely erect. Leaves usually opposite, compound 
or simple, exstipulate. Calyx inferior, entire or lobed or 
spathaceous. Corolla regular or irregular. Stamens 5, of which 
4 or only 2 are fertile. Fruit a dry frequently woody capsule, 
2-celled with a central placentation, or 1-celled with parietal 
placentation. Seeds compressed, winged, destitute of albumen. 
There are about fifty genera, comprising 450 species, for the 
greater part inhabitants of tropical regions. 
1. BIGNONIA. 
Shrubby climbers with pinnate deciduous often tendrilled 
leaves and handsome campanulate flowers. Calyx entire or 
obscurely touthed. Corolla slightly irregular. Fertile stamens 
4, with a rudiment of a fifth. Capsule 2-celled, 2-valved, 
compressed, the partition parallel with the valves. This genus 
commemorates the Abbé Bignon, librarian to Louis XIV. 
1. B. capreolata.—a very handsome glabrous climber with 
unijugate leaves terminating in a branched tendril, and often 
provided with two very small leaflets near the base of the 
petiole. Peduncles clustered, one-flowered. Flowers large,. 
orange. A-native of North America from Virginia southwards, 
and only suitable for warm sheltered situations. 
2. TECOMA. 
This differs from Bignénia in the convex valves of the capsule 
being contrary to the partition, and in the leaves being desti- 
tute of a tendril. The name is an abbreviation of the Aztec 
Tecomaxocbitl. 
