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5. Ulmus Davidiana Planchon. 

 (Tabula nostra VIII.) 



Ulmus Davidiana Planchon in Coinpt Rendu Acad. Sci. Paris LXXIV, 

 pt. 1, p. 149S (1S72), nom. nud.; in Alp. de Candolle, Prodr. XVII, p. 

 158 (1873)-Maximowicz in Bull. Acad. Sci. St. Petersb. XVIII, p. 291 

 (1873) ; in Mel. Biol. IX, p. 24 (1873)-Franchet in Nouv. Arch. Mus. 

 Paris 2 ser. VII, p. 76, t. 8, fig. B. (18S4)-Hernsley in Journ. Linn. 

 Soc, XXVI, p. 447 (lS94)-Schneider, Illus. Handb. II, p. 904, fig. 565 

 i, 566 i (1912). 

 Syn. Ulmus campestris (non Linnaeus) Komarov in Acta Horti Petro- 



politani XXII, p. 82 (1903), partim. 



Arbor elata. Truncus diametro usque 60-80 cm. Cortex cinereo-f uscus 

 irregulariter quadrate sed longitudine altius fissus. Ramuli hornotini 

 virides vel rubescentes adpresse villosuli. Petioli 2-7 mm. longi, sed 

 turionum sa?pe usque 27 mm. longi, adpresse villosuli scepe rubescentes 

 Lamina foliorum obovato-elliptica vel oblongo-obovata duplicato-ser- 

 rulata basi inasqualis apice mucronata vel acuminata vel cuspidata, supra 



