. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. Genus SUMAC FAMILY. 48. I. RHUS [Tourn.] L. Sp. PI. 265. 1753. Shrubs or trees, with altern'ate mostly odd-pinnate leaves, no stipules, and small polyga- mous flowers in terminal panicles. Calyx 4-6-cleft or parted (commonly 5-cleft;, persistent. Petals equal, imbricated, spreading. Disk annular. Stamens (in our species) 5. Pistil ij sessile; ovary i-ovuled; styles 3,
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. Genus SUMAC FAMILY. 48. I. RHUS [Tourn.] L. Sp. PI. 265. 1753. Shrubs or trees, with altern'ate mostly odd-pinnate leaves, no stipules, and small polyga- mous flowers in terminal panicles. Calyx 4-6-cleft or parted (commonly 5-cleft;, persistent. Petals equal, imbricated, spreading. Disk annular. Stamens (in our species) 5. Pistil ij sessile; ovary i-ovuled; styles 3, terminal. Drupe small, i-sceded, mostly subglobose, pubes- cent; stone smooth. Seeds inverted on a stalk that rises from the base of the ovary; cotyle- dons nearly flat. [Ancient Greek and Latin name; Celtic, red.] About 125 species, natives of warm and temperate regions. Besides the following, about 6 others occur in the southern and western parts of the United States. Type species: Rhus coriaria L. Rachis of the leaf wing-margined. i_ /f. copallina. Racbis of the leaf nearly terete. Foliage and twigs velvety-pubescent. 2. Foliage and twigs elabrous. eliiucous. 3. R, glabra. I. Rhus copallina L. Dwarf Black or Mountain Sumac. Upland Sumac. Fig. 2776. Rhus copallina L. Sp. PI. 266. 1753. A shrub, or sometimes a small tree, with maxi- mum height of ^bout 20° and trunk diameter of 6'. Leaves pinnite, 6-12' .long, the petiole and rachis more or less pubescent; leaflets 9-21, ovate-lanceolate or oblong-lanceolate, ineguilat- eral, acute or obtusish at each end, entire, or few-toothed toward the apex, dark green and glabrous above, paler and often pubescent be- neath ; rachis wing-margined between the leaf- lets; flowers polygamous, green, l\" broad, in dense terminal panicles; pedicels and calyx finely pubescent; drupe compressed. 2" in diameter, crimson, covered with short fine acid hairs. In dry soil. Maine and southern Ontario to Flor- ida, west to Minnesota
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
