Bangladesh J. Plant Taxon. 29(2): 437-440, 2022 (December) DOI: https://doi.org/10.3329/bjpt.v29i2.63538 © 2022 Bangladesh Association of Plant Taxonomists -Short communication REDISCOVERY OF POTENTILLA SUPINA L. (ROSACEAE) IN BANGLADESH MOHAMMAD TARIKUL HASAN* AND MOHAMMAD ZASHIM UDDIN1 Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh *Department of Botany, Abdulpur Govt. College, Lalpur, Natore-6422, Bangladesh. Keywords: Potentilla supina L.; Rosaceae; Rediscovery; Bangladesh. Potentilla supina L. (Rosaceae) has been rediscovered after 118 years after the publication from D. Prain's. This specie was collected from Norigashi; Bagatipara Upazila of Natore district under Rajshahi division, Bangladesh. Detailed description and photographs were presented. Rosaceae family consisting of 95 to 125 genera and 2825 to 3500 species which is found in worldwide, but especially diverse in the Northern Hemisphere and Subtropics, with the majority cultivated as ornamentals and edible fruits (Te-tsun et al., 1974, 1985, 1986). The genus Potentilla consists of over 300 species, mostly herbaceous and woody perennials, and grows as a weed (Guillén et al. 2005). In Bangladesh, the family Rosaceae is represented by 13 genera and 26 species, and the genus Potentilla has two species, P. indica and P. supina (Pasha and Uddin, 2013). Potentilla supina was one of them and reported by David Prain (1903) from Tirhut, North Bengal (North Bengal consisting with present Rajshahi and Rangpur divisions of Bangladesh and Jalpaiguri and Malda division of India). Since the time of David Prain’s collection, no other collectors have collected this species from present Bangladesh territory (Ahmed et al., 2009; Islam et al., 2009; Rahman et al., 2010; Tutul et al., 2010; Uddin and Hassan, 2010; Arefin et al., 2011; Rahman et al., 2012; Rahman, 2013; Rahman and Alam, 2013; Rahman et al., 2013; Sarker et al., 2013; Uddin et al., 2013; Kona and Rahman, 2015; Rahman et al., 2015; Uddin et al., 2015; Nahar and Rahman, 2016; Uddin and Abiabdullah, 2016; Mahmudah et al.,2017; Rahaman et al., 2017; Haque et al., 2018; Rahman et al., 2018; Rahman and Uddin, 2018; Uddin and Hassan, 2018; Rahman et al., 2019a, b; Sarker and Rahman, 2019; Khanam et al., 2020; Hossain et al.,2021; Khan et al., 2021; Hossain et al.,2022; Islam et al., 2022; Khatun et al., 2022; Rahman et al.,2022 and Sultana et al.,2022. After a lapse of 118 years, 1st author recently collected one specimen from Bagatipara Upazila under Natore district while exploring the flora of the Bagatipara Upazila and after a critical study identified it as Potentilla supina L (Te-tsun et al. 1974, 1985, 1986). Detailed description and images of the species have been given below. Potentilla supina L., Sp.Pl.1: 497 (1753); Hook, Fl. Brit. Ind. 2:359 (1879); Prain, Beng. Pl. 1: 465(1903); Ahmed et al. (ed.), Encycl. Fl. Fauna Bangladesh 10:31, (2009). Tridophyllum supinum (L.) Greene, Leafl. Bot. Observ. Crit. 1(14): 189. (1906); Comarum flavum Buch,-Ham. ex Roxb. Hort. Bengal.:39 (1814). Argentia supina (L.) Lam., Fl. Franç. 3: 119 (1779); Chamaephyton supinum (L.) Fourr,. Ann. Soc. Linn. Lyon 16: 371 (1868), not validly publ; Comarum supinum (L.) Alef., Bot. Zeitung (Berlin) 24: 262 (1866); Fragaria supina (L.) Crantz, Stirp. Austr. Fasc. 2:10(1763). 1 Corresponding author: E-mail: zashim@du.ac.bd https://doi.org/10.3329/bjpt.v29i2.63538 mailto:zashim@du.ac.bd 438 HASAN AND UDDIN English name: Spreading cinquefoil, bushy cinquefoil Bangle name: Shaktitila Description: An annual herb, prostrate or sub-erect. Roots slender with sparse lateral rootlets. Stems spreading, ascending, or erect, dichotomously branched, 10–25 cm tall, together with petioles pilose. Radical leaves 4-7 cm including petiole; stipules brown, membranous, abaxially pilose; Leaf blade 3-foliolate or pinnately compound with 3-5 leaflets; leaflets alternate or opposite, sessile, or terminal leaflet shortly petiolulate or subsessile, both surfaces green, oblong or obovate-oblong, both surfaces pilosebase cuneate or broadly so, margin obtusely serrate, incised serrate, or 2- or 3-parted, apex obtuse or acute; cauline leaves resembling radical ones but pairs of leaflets fewer higher up stem; Inflorescence terminal, corymbose-cymose, with axillary flowers on lower part of flowering stem. Flowers 6-8 mm in diam.; pedicel 0.8-1.5 cm, densely Fig. 1. Photograph of Potentilla supina L. A. Natural view B. Flower, C. Dry material. REDISCOVERY OF POTENTILLA SUPINA L. (ROSACEAE) 439 pubescent. Sepals triangular-ovate, apex acute; epicalyx segments oblong-elliptic or elliptic- lanceolate, nearly equaling or slightly longer than sepals, apex acute. Petals yellow, obovate, shorter than sepals, apex emarginate. Fruits achenes, cylindric, rugose, apex acute. Flowering and fruiting: March to October. Ecology: The plant is generally found in damp open grass lands or harvested paddy field prefer partial shed. Distribution: Afghanistan, Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria, China, Former Czechoslovakia, Denmark, Russia, Egypt, France, Germany, Greece, Hungary, India, Iran, Iraq, Italy, Japan, Kazakhstan, Kirgizstan, Korea, Mexico, Morocco, Namibia, Nepal, New South Wales, North European Russi, Norway. Pakistan, Poland, Romania, Spain, Switzerland, Tadzhikistan, Thailand, Tibet, Tunisia, Turkey, Turkmenistan, Ukraine, Uzbekistan, Vietnam, Former Yugoslavia Specimens examined: Natore: Bagatipara, Norigacha, 13 iii 2022, Md. Tarikul Hasan, MTH 2117 (DUSH). References Ahmed, Z.U., Hassan, M.A., Begum, Z.N.T., Khondker, M., Kabir, S.M.H., Ahmad, M. and Ahmed A.T.A., (eds.). 2009. 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