. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. m 1. PLATE L. SMOOTH ALDER. 1. Winter branch showing buds, (s) staminate catliins, (p) pistillate catljins, x i. 2. A mature etcnoinate catkin, x i. 3. Mature pistillate catkins, x i. 4. Branch with leaves and fruit, x J. 5. Branch with mature fruit strobiles, x J. 6. A strobile scale with seeds, slightly enlarged. I: SecYilTof wlJte?°ffndi showing stalked bud. lenticels. leaf-scar with bundle-scars, slightly enlarged. ll'. OrosJ^section^o£*^Sanch showing triangular pith, enlarged. SMOOTH ALDER. Alnus rugosa, (Du
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. m 1. PLATE L. SMOOTH ALDER. 1. Winter branch showing buds, (s) staminate catliins, (p) pistillate catljins, x i. 2. A mature etcnoinate catkin, x i. 3. Mature pistillate catkins, x i. 4. Branch with leaves and fruit, x J. 5. Branch with mature fruit strobiles, x J. 6. A strobile scale with seeds, slightly enlarged. I: SecYilTof wlJte?°ffndi showing stalked bud. lenticels. leaf-scar with bundle-scars, slightly enlarged. ll'. OrosJ^section^o£*^Sanch showing triangular pith, enlarged. SMOOTH ALDER. Alnus rugosa, (Du Roi) Sprengel. CEKTIS DESCEIPTION^The Alders -ipris^' ^^^^^^^ ^..^^T"^:^^^. "-^i^:'r^^^rl .tKiut 10 «P--raisTrtruU°w^Sey fn the northern Temisph:re and'extend south through i:?:; ACeiL^L' S tl' LS nlountulns to Bolivia. Most of them are shrubs or small trees, while a few attain a fair tree-size. , V, iw frnm i 1ft ft in height Sometimes solitary, usually in clumps, BA,K_TWo. aated. «eo,. at Uter .r.,.» .ml orten covered wltb wbiti- blotches. TWIO^Batbcf sleuae. .t « «reâ¢U. >.ter ^'^^^-ZJ^lX'^^Xr^^Z^. SXrU^iXrrtea"' ....at «t tt,. B^^AUetoate, » about ^ o. "^-^.^^cf^ wbTct' .n^".."^ To s:^ 'â , .pex aâa â.uat⻫.«., .«c>.,. U:AVES_Altetâatc, "unt^ or ro»cdad at a^ uBuall. ^we^o- ,J^ed at , almost regularl, «"« « °° "i'.S^e/butdarkef ou upper aurface. brownUU ,..a"er tblclt, 2M» '-'='"«,'»â '«; ^J: ..na o nr qranked somewhat triangular, containing .^3\=^lt;farrob rJ;.euTo;:>Wod:d. ^Cu-aca. nattow. Ulaogulat. btowolab and very close to leaf soars. n ^ the leaves Staminate and pistillate occur FLOWERS-Appear in March or April ^^^^^^^^^^^.f ^^^evelop partly in previous autumn separately but on same twig. Stamin
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforests, bookyear1901
