DIOECIA— OCTANDRIA. Populus. 243 



1. V, alba. White Poplar. Abele-tree. 



Leaves lobed and toothed ; somewliat heart-shaped at the 

 base; snow-white and densely downy beneath. Fertile 

 catkins ovate. Stigmas four. 



P. alba. Linn. .S/?f4G.3. Wilkl v. 4. 802. Fl. Br. 1079. Engl. 

 Bot. V. 23. ^. 1 G f^. Hook. Scot. 288. Rnii Syn. 446. Ger. Em. 

 1486./. Bauh.Hist.v.].p.2.\60.f. Matth. Falgr.v. \. \23.f. 

 Camer.Epit.Go.f. Dod. Pempt. 835./. Dalech. Hist.SG.f. Ehrh. 

 Arb. 120. 



P. alba latifolia. Lob. Ic. v.2. 1 93./. 



P. albae alia species. Trag. Hist. 1081. 



P. n. 1 634. Hall. Hist. v. 2. 303. 



P. major. Mill. Diet. cd. 8. ». 4. 



P. nivea. Willd. Berl. Banniz. 227. 



In moist woods ; sometimes in dry mountainous situations. 



Tree. March. 



Root creeping, with plentiful suckers. Trunk various in height, with 

 a smoothish bark, and horizontal brandies, which are very white 

 and cottony when young. Leaves angular, generally with three 

 principal lobes, variously and unequally toothed, blunt-pointed, 

 veiny ; dark green and smooth above ; remarkable for the ex- 

 quisite whiteness of their under side, covered with a very dense 

 cottony substance. Footstalks not half so long as the leaves, 

 each accompanied at the base by a pair of small, lanceolate 

 stipulas, often obsolete or wanting. On young luxuriant 

 branches the leaves are almost palmate. Barren catkins cylin- 

 drical, pendulous, 3 inches long, with brown fringed scales. 

 Stam. 8, sometimes 12, or 20, with short, thick, violet-coloured 

 anthers. Fertile catkins ovate, half as long again before they 

 fade ; their scales rather smaller. Germ, embraced in its lower 

 half by the corolla, ovate, green, smooth. Stigm. 4, spreading, 

 linear-awl-shaped, pale, downy. 



The icood is white, soft, tough, and of a close grain, serving chiefly 

 for coarse purposes. 



2. P. canescens. Grey Poi)lar. 



Leaves romulish, (Iccply waved, toothed ; hoary and 



downy beneath. l^Ttilc calkins cylindrical. Stijrmas 



eight. 

 P. canescens. Fl. Br. 1080. Engl. But. v. 23. t. 1611). ll'ilid. Sp. 



PI. V. \. 802. Alt. Horl. Kew. cd. 2. v. 5. 39:). 

 P. alba. Mill. Diet. cd. 8. n. 1 . fVtlld. Berl. Ranmz. 227. 

 P. alba, foliis minoribus. Bnnh. Pin. '129. Haii Si/n. 446. Ger. 



Em. 14S7./. Lob. lev. 2. 193./. 

 P. alba folio minore. Bauh. Hist. v. \.p 2. 160./. 



