The three common species are differentiated as follows:
1. C. macrocarpa: leaf veins obscure, corolla lobes 1-2.5 cm long, longer than tube, fruit 2-5 cm., ovoid.
2. C. carandas: Lateral leaf veins 7-9 pairs, corolla lobes 1 cm long, shorter than tube, fruit 1,5-2.5 cm, ellipsoid.
3. C. spinarum: Lateral veins 3-5 pairs, corolla lobes 5-7 mm long, shorter than tube, fruit globose, 5-12 mm
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.