. 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. 6o6 The Sumacs. panicles 7 to 16 cm. long at the ends of branches, the staminate on one plant, the pistillate on another, and open from Jxme to August; they are green and about 3 mm. broad, the calyx much shorter than the blimt reflexed petals; the hairy flower-stalks are 2 to 4 mm. long. The fruits are some- what flattened, about 4 mm. thick, densely covered with crimson acid hairs; the smooth stone is orange-brown. The
. 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. 6o6 The Sumacs. panicles 7 to 16 cm. long at the ends of branches, the staminate on one plant, the pistillate on another, and open from Jxme to August; they are green and about 3 mm. broad, the calyx much shorter than the blimt reflexed petals; the hairy flower-stalks are 2 to 4 mm. long. The fruits are some- what flattened, about 4 mm. thick, densely covered with crimson acid hairs; the smooth stone is orange-brown. The leaves are a source of tannin. The wood is soft, hght brown, with a specific gravity of about 2. TEXAN SUMAC Rhus lanceolata (Asa Gray) Britton Rhus copallina lanceolata Asa Gray Fig. sss. Dwarf Sumac. Schmaltzia lanceolata Small The Texan sumac has usually been regarded as a variety of the preceding species, and was originally described as of this relationship, but it is confined to Texas, in so far as its geographic distribution is known, and seems to have marked differences from its widely distributed relative. It grows in dry soil, especially on limestone, attaining a maximum height of about 10 meters, with a trunk 2 dm. in di- ameter, usually, however, much smaller, and often a mere shrub. The bark is light brown and nearly smooth. The young twigs are quite densely velvety. The leaf-stalk is velvety and the leaf- axis winged between the 9 to 19 stalkless or very short-stalked leaf- lets, which are narrowly lanceo- late, long-pointed, more or less scythe-shaped, 7 cm. long or less, ^'°- Sumac. and usually entire-margined; they are dark green on the upper surface and pale green beneath. The tree flowers in July or August and its flowers closely resemble those of R. copallina. The fruits are covered with short hairs and are described as dull red or green; they are borne on very short stalks. The light brown wood has a specific gravity of about Please
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