Botanical Survey of India | Flora of India

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Sida mysorensis Wight & Arn., Prodr. 59. 1834; Masters in Fl. Brit. India 1: 322. 1874. S. urticifolia Wight & Arn. Prodr. 59. 1834, non St. Hill. 1828. S. wightiana D. Dietr., Syn. Pl. 4: 845.1847. S. glutinosa Roxb., [Hort. Beng. 97. 1814, nom. nud.] Fl. Ind. 3: 172. 1832.

Annual or perennial herbs or undershrubs, much branched odorous, ca 90 cm high; stems, petioles and pediceIs densely pubescent with minute stellate hairs, mixed with gland-tipped hairs and some long patent simple hairs. Leaves 1.5 - 8 x 1 - 7 cm, ovate, occasionally the upper leaves oblong or orbicular, cordate at base, acute to acuminate at apex, serrate to crenate, 5 - 11 -nerved at base, pubescent with stellate and gland-tipped hairs on both surfaces, densely so on lower surface; petioles I - 7 cm long; stipules 3 - 6 mm long, filiform, hairy. Flowers axillary, solitary initially, ultimately in condensed racemes or panicles by development of accessory buds; pedicels 3 - 20 mm long, slightly accrescent, thinner than petiole, jointed towards apex. Calyx 5 - 10 x 3 - 4 mm, widely campanulate, 5-fid, lobes connate up to the middle, 2.5 - 5 x 2 - 2.5 mm, deltoid, acute to acuminate, with one prominent midvein, pubescent with stellate and few long patent simple hairs outside, glabrous except along margins inside. Corolla yellow, 5 - 20 mm across; slightly exceeding calyx; petals obtriangular, glabrous. Staminal column ca 4 mm long, antheriferous towards apex, with basal part wide, conical, upper part narrow tubular and glabrous. Ovary ca 1 mm long, brownish black; styles ca 4 mm long, connate up to the middle. Mericarps 5, 2.5 - 3 mm, tetrahedral with rounded angles, acute and short hairy at apex. Seeds ca 2 mm long, ovoid to obtriangular, glabrous, brown-black, dispersed by withering of wall.

Fl. & Fr. Oct. - Feb.

Distrib. India: Along roadsides and in wastelands up to 600 m. Bihar, West Bengal, Meghalaya, Orissa, Madhya Pradesh, Rajasthan, Gujarat, Maharashtra, Andhra Pradesh, Karnataka, Tamil Nadu and Kerala.

S. and S.E. Asia.

Notes. Most of the botanists have treated Sida mysorensis Wight & Arn. as synonym of Sida glutinosa Comm. ex Cav. but it can be easily distinguished from the latter by its awnless mericarps. Borssum-Waalkes (1966) placed S. mysorensis Wight & Arn. and S. glutinosa Cav. in two different sections like Nela vaga and Sida respectively.


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