. Trees and shrubs : an abridgment of the Arboretum et fruticetum britannicum : containing the hardy trees and schrubs of Britain, native and foreign, scientifically and popularly described : with their propagation, culture and uses and engravings of nearly all the species. Trees; Shrubs; Forests and forestry. Avcigene (a.) siWrica. -6. 3. A. AMERICA^NA Slms, The American Atnigene. Identification. Sims, in Bot. Mag., t 887.; Don's Mill., 1. p. 10. Synonyme. Clematis verticill^ris Bee. Prod. 1. p. 10., Tor. ^ Gray, I. p 10. Engravings. Bot. Mag., 887.; and oar fig. 28. Spec. Char., S^c. Peduncl
. Trees and shrubs : an abridgment of the Arboretum et fruticetum britannicum : containing the hardy trees and schrubs of Britain, native and foreign, scientifically and popularly described : with their propagation, culture and uses and engravings of nearly all the species. Trees; Shrubs; Forests and forestry. Avcigene (a.) siWrica. -6. 3. A. AMERICA^NA Slms, The American Atnigene. Identification. Sims, in Bot. Mag., t 887.; Don's Mill., 1. p. 10. Synonyme. Clematis verticill^ris Bee. Prod. 1. p. 10., Tor. ^ Gray, I. p 10. Engravings. Bot. Mag., 887.; and oar fig. 28. Spec. Char., S^c. Peduncles l-flowered ; leaves whorled, in fours, ternate ; leaflets stalked, cordate lanceolate, acuminated, entire or somewhat lobed or serrated. Petals acute. (Don's Mill.) A deciduous climber. Ver- mont to Carohna, on mountains and rocky places. Height 10 it. to 15 ft. Introduced in 1797. Flowers purplish blue; May to July. Fruit white ; ripe ?. Decaying leaves dark brown. Variett/. -i A. a. 2 obliqua Dou. MS.—Leaflets bluntly serrated. This species is distinguishable from all the other Clema- tide£E described in this work, by the peculiarity of its leaves being disposed, not oppositely in alternately decussating pau^, but in whorls of four. This is an anomalous cha- racteristic, which DeCandoUe has expressed by his specific epithet verticillaris. The flowers are very large, and cam- panulate. Sepals oblong-lanceolate, bright purplish blue. jg. Aaigme ^m! (Tor. and Gray.) Layers. Other Species and Vaiieties of Atragene. — A. ochotensis Pall, we consider as a variety of A. sibirica L. A. columbiana Nutt., C, columbiana Tor. 4' Gray, i. p. 11., has ternate leaves, and pale blue flowers smaller than those o{ A, ameri- cana. It is a native of the Rocky , but has not yet been Tribe II. Pmosia^ce^ Dec. Trib. Char. At once distinguishable from Clemattdeae, by the character of the anthers opening to admit the escape of the pollen on the side next the ovari
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