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Pakistan | Family List | Acanthaceae | Hygrophila

3. Hygrophila quadrivalvis (Buch.-Ham.) Nees in Wallich, Pl. As. Rar. 3:89. 1832. in DC., Prodr. 11: 89. 1847; Clarke in Hook. f., Fl. Brit. Ind. 4: 408. 1884; Rani & Mathew in Mathew, F. Tamilnadu Carnatic 3(1): 1179. 1983.


  • Hygrophila obovata Wight
  • Ruellia quadrivalvis Buch.-Ham.

    Perennial, up to 1 m tall unarmed herb. Leaves with up to 2.5 cm long petiole; lamina elliptic-ovate to obovate, 2.5-6 x 2-3.5 cm, slightly hirsute on both sides, basally cuneate, entire to ± crenate, obtuse at the apex. Flowers in axillary fascicles, bluish-purple, c. 1.5 cm long; bracts herbaceous, oblong-obovate, c. 1 cm long, obtuse; bracteoles oblong, c. 6 mm long; obtuse. Calyx 5-lobed, c. 9 mm long, lobes lanceolate, equal, c. 5 mm long, hairy. Corolla hairy, tube c. 8 mm long, limb 2-lipped, 5-lipped, 5-lobed, lips equal, 8-10 mm long, lobes obtuse. Stamens 4, cells unequal, 2-2.5 mm long. Ovary oblong, c. 2.5 mm long, ovules many; style 1.5 cm long, stigma linear. Capsule longer than calyx, 8-12-seeded. Seeds c. 1 mm across on long and curved retinacula.

    Fl. & Fr. Per.: October-January.

    Type: India, Habitat in Mithilae hortis mangiferis.

    Distribution: Pakistan, east wards to Malaysia.

    Recorded for the first time from Pakistan.


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