Campsis grandiflora: leaflets 7-9; glabrous beneath; 4-7 cm long, paler green; calyx 5-lobed to middle; flowers orange to scarlet, corolla tube nearly one and half times as long as calyx, limb nearly 5-6 cm across; capsule 10-15 cm long, obtuse at apex, without beak.
Campsis radicans: leaflets 9-11, pubescent beneath especially along midreib and main veins, dark green above; calyx shortly 5-lobed, lobes less than 1/3 the tube; flowers orange with scarlet limb, 2-3 times as long as calyx, usually less than 4 cm across; capsule cylindric-oblong, 7-12 cm long, keeled along sutures, beaked at apex.
Campsis x tagliabuana: leaflets 7-11 (-13), glabrous beneath; calyx parted up to middle; flowers orange to scarlet; corolla tube 2-3 times longer than calyx, limb 5-8 cm across; sterile flowers fall off when mature, fruits not produced.
Floriculture in India By Gurcharan Singh Randhawa, Amitabha Mukhopadhyay (1986)-
Species with description & keys in Flora of Pakistan :
grandiflora (Thunb.) K.Schum.
radicans (Linn.) Seem.
Species with distribution in annotated checklist of Flowering plants of Nepal :
Campsis (Bignoniaceae) page with images of species in efloraofindia : 1 post by 1 author.
Pl. go through Campsis (Bignoniaceae) page with images of species (done by me) in efloraofindia.
If you find any incorrect identification, pl. let us know. If anybody can send images of other species of this genera (for incorporation in the website), if any, it will be really nice.
Also, if anybody is interested to take up the activity of inserting images on efloraofindia pages from efloraofindia posts, pl. let us know.