Bpjea wrote:

Hi,
Could You tell me, how many species of Crescentia (Bignoniaceae) are there
(apart from C. cujete)?

This might help.

From the International Plant Names Index website:

http://www.ipni.org/ipni/query_ipni.html

Put crescentia in the window labeled Genus name.

This is what I get.

76 records found
Bignoniaceae Crescentia Linn. (IK)
Crescentia aculeata H.B. & K. (IK)
Crescentia aculeata Kunth (GCI)
Crescentia aculeata Sessé & Moc. (GCI)
Crescentia acuminata H.B. & K. (IK)
Crescentia aggregata Miers (IK)
Crescentia alata H.B. & K. (IK)
Crescentia alata Kunth (GCI)
Crescentia amazonica Ducke (GCI)
Crescentia amazonica Ducke (IK)
Crescentia angustifolia Willd.ex Seem. (IK)
Crescentia aphylla A.Heller (GCI)
Crescentia arborea Rafin. (IK)
Crescentia auculeata Sesse & Moc. (IK)
Crescentia australis var. petiolata Meisn. (GCI)
Crescentia confertifolia Miers (IK)
Crescentia coriacea Miers (IK)
Crescentia cucurbitifera Houtt. (IK)
Crescentia cucurbitina L. (GCI)
Crescentia cucurbitina Linn. (IK)
Crescentia cucurbitina var. heterophylla Kuntze (GCI)
Crescentia cujete Billb.ex Beurl. (IK)
Crescentia cujete forma megalophylla Donn.Sm. (GCI)
Crescentia cujete L. (GCI)
Crescentia cujete Linn. (IK)
Crescentia cujete Sessé & Moc. (GCI)
Crescentia cujete var. puberula Bureau & K.Schum. (GCI)
Crescentia cujete Vell. (IK)
Crescentia cujete[alter], Sesse & Moc. (IK)
Crescentia cuneifolia Gardn. (IK)
Crescentia cuspidata Miers (GCI)
Crescentia cuspidata Miers (IK)
Crescentia depressa Goodd. (GCI)
Crescentia donnell-smithii Sprague (GCI)
Crescentia donnell-smithii Sprague (IK)
Crescentia donnell-smithii Sprague ex Donn. (IK)
Crescentia edulis Desv. (IK)
Crescentia edulis Sessé & Moc. (GCI)
Crescentia edulis Sesse & Moc. (IK)
Crescentia elongata Miers (IK)
Crescentia erecta Rydb. (GCI)
Crescentia fasciculata Miers (IK)
Crescentia insularis House (GCI)
Crescentia jasminoides Lam. (IK)
Crescentia latifolia Mill. (GCI)
Crescentia latifolia Mill. (IK)
Crescentia latifolia Rafin. (IK)
Crescentia lethifera Tuss. (IK)
Crescentia linearifolia Miers (IK)
Crescentia macrophylla Seem. (GCI)
Crescentia macrophylla Seem. (IK)
Crescentia microcarpa Bello (IK)
Crescentia minima A.Heller (GCI)
Crescentia mirabilis Ekman ex Urb. (GCI)
Crescentia mirabilis Ekman ex Urb. (IK)
Crescentia musaecarpa Zaldivar ex Heller (IK)
Crescentia nigripes Linden (IK)
Crescentia obovata Benth. (GCI)
Crescentia obovata Benth. (GCI)
Crescentia obovata Benth. (IK)
Crescentia ovata Burm.f. (IK)
Crescentia palustris Forsyth ex Seem. (IK)
Crescentia pinnata Jacq. (IK)
Crescentia plectantha Miers (IK)
Crescentia portoricensis Britton (GCI)
Crescentia portoricensis Britton (IK)
Crescentia pumila Rafin. (IK)
Crescentia regalis Linden (GCI)
Crescentia regalis Linden (IK)
Crescentia spathulata Miers (IK)
Crescentia ternata Sessé & Moc. (GCI)
Crescentia toxicaria Tuss. (IK)
Crescentia trifolia Blanco (IK)
Crescentia truxillensis var. minima (A.Heller) Munz (GCI)
Crescentia truxillensis var. vallicola (A.Heller) Munz (GCI)
Crescentia vallicola A.Heller (GCI)