. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. Order 40.—AOBRACEiE. 285 thickness, covered with a grayish, scaly bark, and t)irows out all along its length myriads of thread-like rootlets, which bind it firmly to its support. Leaflets 3 of a dark and shining green, the lowest rarely angular. Berries dull white. Fls'. greenish. May, Jn.—The juice, like that of the last, is poisonous, and forms an indelible ink. (R. tox. 13. Mx. and Ed. 2d.) 8 R. aromitica Ait. Sweet Sumao.
. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. Order 40.—AOBRACEiE. 285 thickness, covered with a grayish, scaly bark, and t)irows out all along its length myriads of thread-like rootlets, which bind it firmly to its support. Leaflets 3 of a dark and shining green, the lowest rarely angular. Berries dull white. Fls'. greenish. May, Jn.—The juice, like that of the last, is poisonous, and forms an indelible ink. (R. tox. 13. Mx. and Ed. 2d.) 8 R. aromitica Ait. Sweet Sumao. Lvs. sessile, incisely crenaie, pubescent beneath, lateral ones ovate, terminal one rhomboid; fls. in close aments, preced- ing the leaves; drupe globous, villous.—A small, aromatic shrub, 2 to 6f high in hedges and thickets. Can. and TJ. S. ; 1 to 2' long, J as wide, sessile, the common petiole an inch or two in length. Fls. yellowish with a 5-lobed, glandu- lar disk. Drupes red, acid. May. Not poisonous. 9 R. Cotinus L. Venetian Sumac. Lvs. obovate, entire; fls. mostly abortive, pedicels finally elongated and clothed with hairs.—A small shrub 8f high, native in Ark. according to Nuttall (?), remarkable chiefly for the very singular and orna- mental appearance of its long, diffuse, feathery fruit-stalks, showing in the dis- tance as if the plant were enveloped in a cloud of smoke. Fls. smaU, in terminal, compound panicles. Lvs. smooth, entire, much rounded at the end. In Italy the plant is used for tanning. 10 R. cotinoides Buckley. A large tree, 40 to 50f in height, in woods on the high mts. of KT. Car. (Buckley). Also in Ark. (Nuttall ?). We have seen no specimens, and are unable to give the specific differences between this new species and R. Cotinus, if, indeed, it be distinct, as is probable. Order XXXIX. PITTOSPORACE^. JVeas or Shrubs, with alternate, exstipulate leaves and regular flowers. CcUyx and corolla 4 or 5-merou3, imbricated in the bud, decidu
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