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6. Caltha L., Sp. Pl. 558. 1753. Gen. Pled. 5:623. 1754; Boiss., Fl.Or. 1:59.1867; Hook.f. & Thoms., Fl.lndica, 39.1855; in Hook.f., Fl. Brit. Ind. 1:21.1872; Huth in Abb. Vorli Ges. Natur. (Berlin) 4:1-23.1891, reprinted in Helios 9:55-78, 1892; l.c. 9:99-103. 1893; Kordell & Koatim-Samon in New Phytol. 70:173-186.1971; Smith in Blumea 21:119-150. 1923; Qureshi & Chaudhri, Pak. Syst. 4(1-2):27.1988.
HARALD RIEDL and YASIN J. NASIR
Naturhistorisches Museum, Botanische Abteilung, Wien, Austria. and National Herbarium, Pakistan Agricultural Research Council, Islamabad, Pakistan.
Perennial plants with undivided leaves. Flowers simple or more often in a reduced inflorescence. Perigonium simple, composed of 5-10 petaloid sepals. Petals (nectaries) lacking. Stamens and carpels numerous, arranged in irregular numbers on a flat receptacle. Carpels free from each other, many seeded. Mature fruits developed as follicles. Seeds compressed obovoid or oblong, sometimes asymmetrical.
A widespread genus of about 40 species distributed throughout both hemispheres.
No species of Caltha are of any economic u se. Caltha palustris L. is said to be poisonous. It is widespread in temperate arctic Europe, Asia & N. America but is not represented in Pakistan.
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Pollen grains tricolpate, broadly ellipsoidal. Sepals yellow, rarely white |
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1 Caltha palustris |
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Pollen grains pantoporate, globose. Sepals white |
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2 Caltha alba |
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Lower Taxa
Related Synonym(s):
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