Pharbitis nil (Linn.) Choisy
Annual climbers, densely to scattered pubescent with large trichomes throughout. Leaves ovate to suborbicular, 5-15 cm long, entire or 3(-5)-lobed, basally cordate, the lobes apically acute to acuminate, pubescent. Flowers in 1-6 flowered cymes. Sepals long-lanceolate, 15-25 mm long, with linear-lanceolate apices, densely long-hirsute, at least at the base. Corolla blue (also purple or almost scarlet in cultivated varieties), throat white, 3-5 cm long. Fruit capsular, subglobose to globose, 8-12 mm long. Seeds pyriform, densely pubescent with short trichomes.
Fl. Per.: June to October.
Type: U.S.A., Illustration of Convolvulus caeruleus hederaceo, Dill., Hor. Fhb. t. 80. f. 91.1732 (lectotype).
B-7 Kashmir: Domel, R.R. & I. D. Stewart 3727 (RAW), Garhi, Jhelum Valley, R.R. Stewart 10091 (RAW), Murree Hills: Kahuta, E. Nasir & M.A. Siddiqi 1485 (RAW), Mingora to Jaba, M. Qaiser & A. Ghafoor 4769 (KUH), Hazara: Balakot, M. Qaiser & Azmat Ali 5155 (KUH), Abbottabad, A. Majid 2217 (PPFI-M), C-7 Rawalpindi: Topi Park, R.R. Stewart 17091 A (RAW), Murree, Gharial, R.R. Stewart 4018 (RAW): Jhelum Dist.: Choa Saiden Shah, S. Farooqi & M. Qaiser 2882 (KUH), C-6 Kohat Dist.: Hangu, rest house, M.A. Siddiqi & Y. Nasir 6402 (RAW), G-5 Sind: Tando Jam, 9.10.1959, A. Jalis s.n. (RAW).
Distribution: Originally from Americas, now circumtropical.
This species and Ipomoea hederacea Jacq. are very similar. Some authors have switched the names or considered them synonymous. One or both play an important part in the ayurvedic medicines. The seeds are used as a purgative.