Trees; a handbook of forest-botany for the woodlands and the laboratory . Fig. 45. Spindle Tree, Euonymus europceus, p. 180 (Wi). (a) Lobes more or less ovate, the sinusbetween any two narrow and acute;coarsely and irregularly cut into bluntteeth or lobules, apex bluntly acuminate;sap watery. Acer pseudoplatanus, L. Sycamore (Fig. 46). Largetree with leaves 10—15 or even 20 (9—16 x 10—21) , not milky, pentagonal and 5-lobed ; lobes more 182 SYCAMORE or less ovate, the lowest much smaller, and the sinus verynarrow and acute, and extending about half-way to themidrib. Lobes coarsely a
Trees; a handbook of forest-botany for the woodlands and the laboratory . Fig. 45. Spindle Tree, Euonymus europceus, p. 180 (Wi). (a) Lobes more or less ovate, the sinusbetween any two narrow and acute;coarsely and irregularly cut into bluntteeth or lobules, apex bluntly acuminate;sap watery. Acer pseudoplatanus, L. Sycamore (Fig. 46). Largetree with leaves 10—15 or even 20 (9—16 x 10—21) , not milky, pentagonal and 5-lobed ; lobes more 182 SYCAMORE or less ovate, the lowest much smaller, and the sinus verynarrow and acute, and extending about half-way to themidrib. Lobes coarsely and irregularly bluntly serrate,crenate-serrate, or slightly lobed, the apex more or less. Fig. 46. Sycamore, Acer pseudoplatanus, p. 181 (D). acute or bluntly acuminate ; lateral lobes larger than basal;base cordate. Surface glabrous, somewhat wrinkled; darkgreen and shining above, paler matt green and glaucous, NORWAY MAPLE 183 or sometimes purplish red beneath, and with hairs on theprincipal ribs; petiole firm, but slender, about 10—20 , green or red. Leaves densely pubescent beneathwhen young; brown in autumn, and often disfigured byblack blotches, due to the parasitic fungus Rhytisnia. Venation palmate, of 5 primaries, ending in the pointsof the lobes ; secondaries pinnate and ending in lobules orteeth, numerous, slightly curved forwards. Tertiaries welldeveloped and rapidly breaking into a fine mesh on the midrib about i its length apart. (/3) Lobes angular, the apex and teeth drawnout into long acuminate points, the sinusivide and hardly acute. Latex white. Acer platanoides, L. Norway Maple (Fig. 47). Largetree, with thin, herbaceous, glabro
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Keywords: ., bookcentury1900, bookdecade1900, bookidtreeshandboo, bookyear1904
