. 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. 35° The Elms leaves are fully grown; the leaf-stalks are 3 to 10 mm. long. The clustered flowers unfold long before the leaves in earliest spring, or, in the southern States, in late winter; they are borne on slender stalks; the calyx is much shorter than the stamens, and its lobes are short and hairy-fringed. The samaras are oval to obovate, the two tips converging, overlapping, or erect, its reticu- lated faces smooth,
. 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. 35° The Elms leaves are fully grown; the leaf-stalks are 3 to 10 mm. long. The clustered flowers unfold long before the leaves in earliest spring, or, in the southern States, in late winter; they are borne on slender stalks; the calyx is much shorter than the stamens, and its lobes are short and hairy-fringed. The samaras are oval to obovate, the two tips converging, overlapping, or erect, its reticu- lated faces smooth, its edges fringed with long hairs. The White elm has been more extensively planted for shade and ornament than any other American species, but its use for these purposes has been discouraged in recent times by the ravages of the Ehn Beetle, and it is no longer so highly esteemed. The wood is hard and strong, splits only with difficulty, is light brown, with a specific gravity of about ; it is largely used in ship-building, for flooring, and for hubs and barrels. Trees occur in northern New Jersey with very rough bark deeply furrowed and but little Fig. 307. — White Elm. 6. SLIPPERY ELM — xnmus ftdva Michaux The Slippery elm, so called from its mucilaginous inner bark, is also commonly known as the Red elm, and sometimes as Moose elm. It has also been termed Ulmus pttbescens botanically, on account of a tree described by Thomas Walter under that name in 1788, fifteen years before the name fulva was published by Michaux; it is, however, uncertain just what species Walter had in mind, as his description is unsatisfactory. The tree inhabits hillsides and banks of streams, preferring rocky soil, and ranges from Quebec to Florida, west- ward to North Dakota, Nebraska, and Texas; it is uncommon near the coast south of New York. It attains a maximum height of about 25 meters and its trunk is occa- sionally 6 dm. in thickness. The rough, thick fissured bark is dark redd
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