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(Last Modified On 6/2/2011)
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Acceptance
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Accepted
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(Last Modified On 6/3/2011)
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Synonym Text:
Polygonum glabrum Willd. Sp. Pl. 2: 447. 1799; Meisn. in DC. Prodr. 14: 115. 1856; Hook. f., Fl. Brit. Ind. 5: 34. 1886; Cooke, Fl. Pres. Bomb. 3: 5.1958 (reprint. ed.); Rech. f. & Schiman-Czeika in Rech. f., Fl. Iran. 56: 57. 1968; R.R.Stewart, Ann. Cat. Vasc. Pl. W. Pak. & Kashm. 206. 1972; Bhopal & Chaudhri in Pak. Syst. 1(2): 75. 1977.
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Flower/Fruit:
Fl. Per.: April-November.
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Type:
Type: "Hab. in India Orientali" (B-Willdenow!).
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Habitat:
An entirely glabrous plant, except the leaves which are often red-gland dotted, ochrea are completely eciliate. Grows mostly from plains to 1000 m in or near water, in ditches, river banks and lakes.
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Distribution:
Distribution: Tropical Asia, Pakistan, India extending upto Malayesia and Philippine; Africa.
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Map Location:
B-6 Dir, Salim 78 (RAW); B-7 Mansehra, 10.10.1964, S. A. Khan s.n. (KUH); Hazara, August 1939, Abdul Latif s.n. (RAW). C-6 Kurram valley; Alizai-Sadda-Road, flowers pinkish white, M. A. Siddiqi & Y. Nasir 6949 (KUH); Kurram, Aitchison 866 (K); Swabi growing near water, Bashir Ahmad Suhail 289 (K), Nowshera, Khasgi, Bashir Ahmad Suhail 236 (K); C-7 Rawalpindi, Sohan river, 1500 ft, R. R. Stewart 438 (K, KUH); Rawalpindi, Sept. 1928, R. R. Stewart s.n. (RAW); Between Khalabat and Tarbela by Bridge over Dor River, B. L. Burtt 1541 & 1542 (E); Islamabad, 10.12.1981, M. Shariq s.n. (KUH); ibid, ± 2200 ft, 2.12.1974, collector ignotis, s.n. (ISL); CDA Nursary Islamabad, Nisar Abbasi & Afzal 481 (ISL); Rawalpindi, April 8, 1922, R. R. Stewart s.n. (K); D-6 Taunsa Barrage, D. G. Khan-Multan Road, Sultanul Abedin & Abrar Hussain 9703 (KUH); D-7 Sutley near Pauk Putten (Pak Patten), Griffith 4112 (K); D-8 Lahore, T. Thomson s.n. (K); E-6 2 miles from Taunsa barrage, D. G. Khan - Multan Road, Sultanul Abedin & Abrar Hussain 9703 (KUH); F-5 Sukkur, Labe Mehran, near river Indus, growing in water, Saood Omer & Rizwan Yousuf 1970 (KUH); Bubak, Sind, 29.10.1960, Siraj A. Rizvi s.n. (KUH), ibid, 6.11.1960, S. A. Kheri s.n. (KUH); ibid, 26.12.1952, Mushtaq Hussain s.n. (KUH); Larkana, 26.4.1956, Ashfaq Ali s.n. (KUH); Sukkur, 28.10.1957, M. Jaffar Husain s.n. (KUH); G-4 Thatta, Haleji lake, 22.2.1985, Saood Omer s.n. (KUH); Haleji Lake, M. Qaiser 415, 4280 (KUH); ibid, Khadija Aziz & Abrar Hussain 29 (KUH); Along Kalri lake, Kamal A. Malik, Shahryar Naqvi & M. Sharif 2013 (KUH); ibid, s.n. Shahryar 13 (KUH); Fateh Ali Garden, August 1978, Saida Qaiser s.n. (KUH); G-5 15.5 miles from Sajawal on way to Jati, in water, Sultanul Abedin 4189 (KUH).
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Erect, 0.5-1.5 m tall, glabrous, branched perennial herb. Stem reddish at base, nodes usually swollen. Leaves 18-22 x 1-3.5 cm, completely glabrous, sometimes red gland dotted at the base, elliptic-lanceolate to lanceolate, acuminate, petiole 0.5-1.35 cm. Ochrea 1-3 cm long, tube-like, completely eciliate. Inflorescence glabrous, pedunculate, branched raceme, 5-10 cm long, very slender. Ochreolae 2-4 mm long, imbricate, glabrous. Flowers heterostylous, pedicel 2.5-4.5 mm long, exerted from ochreolae. Tepals 5, eglandular, white or pink, up to 2.5 mm long. Stamens exserted or included, (6-) 7 (-8), 1.75-4 mm long. Pistil exserted or included, 2.0-4.5 mm long; ovary biconvex, styles 2, rarely 3, connate at the base. Nuts bigonous ± rounded, 1.5-3.0 x 1.5-2.0 mm, glabrous, black, shining.
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