DIOECIA— OCTANDRIA. Populus. 243 



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



Leaves lobed and toothed ; somewhat heart-shaped at the 

 base; snow-white and densely downy beneath. Fertile 

 catkins ovate. Stigmas four. 



P. alba. Linn. Sp. 1463. Willd. v. 4. 802. H. Br. 1079. Engl. 

 Bot. V. 23. t.l6]8. Hook. Scot. 28S. Rail Syn. 446. Ger.Em. 

 1486./. Bauh.Hist.v. l.p.2. 160./. Matth. Falgr.v.l. 123./ 

 Corner. Epit. 65./. Dod. Pempt. 835./. Dalech.Hist.S6.f. Ehrh. 

 Arb. 120. 



P. alba latifolia. Loh. Ic. v.2. 193./ 



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



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



P. major. Mill. Diet. ed. 8. n.4. 



P. nivea. Willd. Berl. Baumz. 22/. 



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 branches, 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 orate, 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 wood is white, soft, tough, and of a close grain, serving chiefly 

 for coarse purposes. 



2. P. canescens. Grey Poplar. 



Leaves roundish, deeply waved, toothed; hoary and 

 downy beneath. Fertile catkins cylindrical. Stigmas 

 eight. 



P. canescens. ¥1. Br. 1080. Ettgl. Bot. v. 23. i. 1 6 1 9. WiUd. Sp. 



PL V.4. 802. Jit. Hort. Kew. erf. 2. i'. 5. 395. 

 P. alba. Mill. Diet. ed. 8. n. 1 . fVilld. Berl. Baumz. 227. 

 P. alba, foliis minoribus. Bauh. Pin. 429. Rail Sy«. 446. Ger. 



Em. 1487./. Lob. lev. 2. 193./ 

 P. alba folio minore. Bauh. Hist. v. l.p.2. 1 60./ 



b2 



