. 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 102d meridian. Botany; Botany. 444 RUTACEAE. Vol. II. About 150 species, natives of temperate and tropical regions. In addition to the following 2 others occur in the Southern States. Type species : Zanthoxylum Clava-Herculis L. Flowers in small sessile axillary cymes; calyx none. i. Z. americanum. Flowers in large terminal compound cymes ; calyx present. 2. Z, Clava-Herculis, I. Zanthoxylum
. 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 102d meridian. Botany; Botany. 444 RUTACEAE. Vol. II. About 150 species, natives of temperate and tropical regions. In addition to the following 2 others occur in the Southern States. Type species : Zanthoxylum Clava-Herculis L. Flowers in small sessile axillary cymes; calyx none. i. Z. americanum. Flowers in large terminal compound cymes ; calyx present. 2. Z, Clava-Herculis, I. Zanthoxylum americanum Mill. Prickly Ash. Toothache-tree. Fig. 2691. Xanthoxylum americanum Mill. Gard. Diet. Ed. 8, no. 2. 1768. A shrub, or small tree, reaching a maxi- mum height of about 25°, and a trunk diameter of 6'. Leaves alternate, odd- pinnate, pubescent when young, becoming glabrous or nearly so when old; leaflets 3-11, ovate, opposite, dark green above, lighter beneath, nearly sessile, iA'-2' long, crenulate or entire, acutish; flowers green- ish, about 15" broad, in sessile axillary cymes, borne on the wood of the previous season and appearing before the leaves; pedicels slender; calyx none; petals'4 or 5; pistils 2-5; follicles black, ellipsoid, about 2" long, on short stipes, 1-2-seeded. In woods and thickets, Quebec to Virginia, especially along the mountains, west to western Ontario, South Dakota, Kansas and Nebraska. Wood soft, light brown ; weight per cubic foot 35 lbs. Angelica-tree. Suterberry. 2. Zanthoxylum Clava-Herculis L. Southern Prickly Ash. Sea Ash. Pepper-wood. Fig. 2692. Z. Clava-Herculis L. Sp. PI. 270. 1753. Z. carolinianitni Lam. Encycl. 2: 39. 1786. A small, very prickly tree, with a maxi- mum, height of 45° and trunk diameter of 9', the prickles supported on cushions of cork sometimes 8' broad. Leaves alternate, odd-pinnate, glabrous, shining above, dull beneath; leaflets S-19, obliquely ovate, nearly sessile, i2'-3' long, acute
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
