. Nord America : alberi essendo descrizioni e illustrazioni degli alberi che crescono in modo indipendente di coltivazione in America del Nord, a nord del Messico e le Indie occidentali . Alberi. 4i8 l'albero piano famiglia lascia essere ucciso in maggio o in giugno di minuto in minuto fungo Glocosporium nervi- sequum Saccardo, sebbene il secondo raccolto di foglie vestiti i rami in luglio. Le specie europee, P. orientalis Linnasus, è meno soggetto a questa malattia. 2. ARIZONA PLATANO - Platanus Wrightii S. Watson questo albero è anche chiamato Arizona plane tree, ma localmente semplicemente platano. È noto solo dalla montagna c

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. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. 4i8 The Plane Tree Family leaves being killed in May or June by the minute fungus Glocosporium nervi- sequum Saccardo, though the second crop of leaves clothes the branches in July. The European species, P. orientalis Linnasus, is less subject to this disease. 2. ARIZONA SYCAMORE — Platanus Wrightii S. Watson This tree is also called the Arizona plane tree, but locally simply Sycamore. It is known only from the mountain canons of southwestern New Mexico, south- em Arizona and Sonora, at eleva- tions of about 1800 meters. Its greatest height is 24 meters, with a trunk diameter of 1.5 meters. It much resembles the above de- scribed tree in bark and manner of branching. The twigs are slender, thickly woolly at first, but soon be- come smooth and light reddish brown or gray brovrai in color; the winter buds are conic, sharp-pointed, about 5 mm. long. The leaves are 15 to 20 cm. across, lobed to below the middle into 3 to 7 elongated wedge-shaped, sharp-pointed, or Fig. 366.-Arizona Sycamore. j.^j.giy funded lobes, which are en- tire or toothed; the base is usually heart-shaped, seldom truncate or wedge-shaped; they are thin, firm, light green, and smooth above, pale and hairy beneath; the stout, usually smooth leaf-stalk is 3 to 5 cm. long; the stipules are small, seldom over 10 mm. long, and usually entire. The flowering peduncles are covered with thick, whitish hairs. The fruit heads, of which there are from 2 to 5, are 2 to 3 cm. in diameter, and hang on a smooth, slender stem, 15 to 20 cm. long; the lateral heads arc on stalks 2 to 2.5 cm. long. The nutlets are smooth, angular, about 6 mm. long, rounded at the top and capped by the short, curved, persistent style. The wood is very similar to that of the previously described tree, except that it is considerably lighter in weight, its specific

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1900
• bookpublishernewyorkhholtandco