1910–1911
Britannica 11th
Encyclopaedia Britannica · 11th edition
ASPEN, an important section of the poplar genus (Popttlus) of which the common aspen of Europe, P. tremula, may be taken as the type, — a tall fast-growing tree with rather slender trunk, and grey bark becoming rugged when old. The roundish leaves, toothed on the margin, are slightly downy when young, but afterwards smooth, dark green on the upper and greyish green on the lower surface; the long slender petioles, much flattened towards the outer end, allow of free lateral motion by the lightest breeze, giving the f…
- Source status
- OCR text aligned to scanned pages
- Pages
- Vol. 2, pp. 766-766