RUMEX 
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Some botanists have erroneously regarded R. longifolins as a hybrid of R. aquaticus and R. crispus. 
Alluvial meadows, stream-sides, ditch-banks, damp road-sides, waste-places and cultivated fields. 
From the West Riding of Yorkshire to Orkney and Shetland, rather common in northern Scotland ; 
not recorded from Ireland, Wales, or southern England. 
Scandinavia (Arctic and southern), Denmark, Faeroes, France, Germany, Pyrenees, Russia; 
Caucasus, central Asia; North America (northern and Arctic); Greenland. 
R. crispus x longifolius comb. nov. ; R. propinquus J. E. Areschoug in Hot. Notiser 22 (1840); 
R. crispus x domes ticus Murbeck in Bot. Notiser 20 (1899); Ascherson und Graebner Syn. iv, 727 (1912). 
Exsiccata; — Herb. Marshall, 2183. 
Differs from R. longifolius in its more contracted inflorescence , in its whorls containing more 
flowers, in its fruiting segments more broadly cordate, and in its larger tubercles. From R. crispus 
var. typicus it is distinguished by its less wavy laminae. 
Local or overlooked ; from Argyllshire and Kincardineshire to Zetland. 
Norway, Sweden. 
R. longifolius x obtusifolius comb. nov. ; R. conspersus Areschoug Sv. Vet. Akad. Ofvers. 65 
(1862)! ex Ascherson und Graebner op. cit.‘, Syme Eng. Bot. viii, 48 (1868) excl. syn. Willdenow ; non 
Hartman; R. domes ticus x obtusifolius Murbeck in Bot. Notiser 14 (1899); R. obtusifolius x domesticus Ascherson 
und Graebner Syn. iv, 744 (1912). 
M. II. 
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