Trees; a handbook of forest-botany for the woodlands and the laboratory . is, L. Scots Pine (Fig. 119). Tree withorange or sienna-coloured bark. Leaf 4—7 (rarely up to10) cm., persisting 3—4 years; rigid, straight, or curvedand twisted, slightly spreading, bluish or glaucous whenyoung, then dark green on the convex, and glaucous onthe plane side. Slightly rough at the angles; apex callous,acute or even pungent. Sheath of fascicle wrinkledand blackish, 1 cm. long, of numerous minute scales,persistent; the remains of similar scale-leaves along theolder twigs. Very resinous. Resin-canals numerous
Trees; a handbook of forest-botany for the woodlands and the laboratory . is, L. Scots Pine (Fig. 119). Tree withorange or sienna-coloured bark. Leaf 4—7 (rarely up to10) cm., persisting 3—4 years; rigid, straight, or curvedand twisted, slightly spreading, bluish or glaucous whenyoung, then dark green on the convex, and glaucous onthe plane side. Slightly rough at the angles; apex callous,acute or even pungent. Sheath of fascicle wrinkledand blackish, 1 cm. long, of numerous minute scales,persistent; the remains of similar scale-leaves along theolder twigs. Very resinous. Resin-canals numerous, allround the leaf, each encircled by sclerenchyma. Venation simple. Vascular bundle double. Dyingleaves yellow. [There are numerous varieties, differing in habit,colour, length of leaves and cones, &c. Allied to this is P. montana, the Mountain Pine, amore or less prostrate alpine species with thick andrigid needles, 2—5 up to 6—8 cm. long, deep green bothsides, often falcate, blunt, in crowded tufts and persisting4—5 years.] SCOTS PINE : BLACK PINE 311. Fig. 119. Scots Pine, Pinus syloestris, p. 310 (Wi). 8 3 Needles longer, at least 8—15and up to 30 cm. long. A Leaves 10—15 cm., or up to18 cm. P. Laricio, Poir, var. Austriaca. Black Pino, AustrianPino (Fig. 120). Tall tree with very dark bark and rigid or sinuous, deep green on both faces, 8—18cm. long; stout, slightly obtuse or acute, hardly pungent, 312 BLACK PINE tip yellowish and hard, semi-terete or slightly channelledabove, margins minutely serratulate, persisting 3—4 oreven 6 years. Dying leaves yellow. Basal sheath 1*5 cm.,whitish or yellowish, becoming shorter and darker. Resin-
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Keywords: ., bookcentury1900, bookdecade1900, bookidtreeshandboo, bookyear1904
