. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. II 'â¢I. 157 r PLATE LXXII. AMERICAN ELM 1, Floworiiig Jininch witli h'al Imils, x J. I'. BiS wUh"uHUiio fniit, iininaturfi loavos and an cximiuling )md. x *. 4. BraiH'li with mature lpav»>8, x i. .,,.,*,, i r. Winter twig with (fl Hower hurts, and (1) Ifaf-budK. x ». fi V Ipaf-scar with liundle-srars, «'nlarged. , , , , ?: SoSm of a winter twig, with a slightly ;ent bud. onlargod. AMERICAN ELM .. Elmus amcricana, Linnaeus FOEMâA large tree UBually atUlning a height of 80-100 ft. with a diameter
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. II 'â¢I. 157 r PLATE LXXII. AMERICAN ELM 1, Floworiiig Jininch witli h'al Imils, x J. I'. BiS wUh"uHUiio fniit, iininaturfi loavos and an cximiuling )md. x *. 4. BraiH'li with mature lpav»>8, x i. .,,.,*,, i r. Winter twig with (fl Hower hurts, and (1) Ifaf-budK. x ». fi V Ipaf-scar with liundle-srars, «'nlarged. , , , , ?: SoSm of a winter twig, with a slightly ;ent bud. onlargod. AMERICAN ELM .. Elmus amcricana, Linnaeus FOEMâA large tree UBually atUlning a height of 80-100 ft. with a diameter of 2-4 ft., bnt may reach a height of 120 ft. with a diameter of 8-11 feet. A tree In Jefferson county. Pennsylvania, reached a height of 140 ft. and had a crown spread of 76 feet. It cut almost 9 000 board feet of lumber. The form Is very valuable. The most common kinds which are recognized are "Vase Form," "UmbreUa Form," "Oak Form," and "Feathered ; Some trunks are tall and straight terminated by a shallow but broad crown composed of very gracefully drooping lateral branches. In open grown trees, the trunk often divides near the ground. The form may resemble the spray of a fountain. See Fig. 66. BARKâRather thick, grayish, whence its name Gray Elm, roughened by long and Irregular furrows separating rather broad, flat ridges which are usually firm but occasionally flaky or corky. Cross-section of bark often shows alternating white and brown layers. TWIGSâSlender, at first greenish and pubescent, later smooth and reddish-brown, roughened by leaf-scars and pale, inconspicuous, scattered lentlcels. Base of twigs marked with persistent ring-like bud-scale scars. BTJDS-Altemate; terminal bud absent; ovate, sharp-pointed, slightly flattened '««»dl8»'-bro^. usually smooth, rarely slightly hairy, covered with about 6-10 overlapping reddish-brown scales ^thdar^r margin Leaf-buds are smaller than the flower buds and l
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforests, bookyear1901
