The flowers are in erect spikes, and shaped like those of a Bignonia of a delicate mauve purple, blotched inside with a deeper tint.
Catalpa - Handsome flowering trees of the Bignonia order, one of them forming a beautiful tree even in London gardens.
The arboreous forms which least require the humid and equable heat of the more truly tropical and equatorial climates, and are best able to resist the high temperatures and excessive drought of the northern Indian hot months from April to June, are certain Leguminosae, Bauhinia, Acacia, Butea and Dalbergia, Bombax, Shorea, Nauclea, Lagerstroemia, and Bignonia, a few bamboos and palms, with others which extend far beyond the tropic, and give a tropical aspect to the forest to the extreme northern border of the Indian plain.
We have wild olive, species of rock-rose, wild privet, acacias and mimosas, barberry and Zizyphus; and in the eastern ramifications of the chain, Chamaerops humilis (which is applied to a variety of useful purposes), Bignonia or trumpet flower, sissu, Salvadora persica, verbena, acanthus, varieties of Gesnerae.
Among the Dicotyledons described by Velenovsky are the following: Credneria (5 species), Araliaceae (17 species), Proteaceae (8 species), Myrica (2 species), Ficus (5 species), Quercus (2 species), Magnoliaceae (5 species), Bombaceae (3 species), Laurineae (2 species), Ebenaceae (2 species), Verbenaceae, Combretaceae, Sapindaceae (2 species), Camelliaceae, A m pelideae, M i m o s e a e, Caesalpinieae (5 species), Eucalyptus (2 species), Pisonia, Phillyrea, Rhus, Prunus, Bignonia, FIG.
Twining lianas are met with in a species of Bignonia; Umbelliferae Ranunculaceae and Cruciferae, are represented by a few fruits.