I. RANUNCULA‘CLE: ATRA’GENE. 7 
4 2. d.(a.) sipi’rica LZ. ‘The Siberian Atragene. 
Identification. Sims, Bot. Mag., t. 1951. ; Don’s Mill., 1. p. 10. 
Synonymes. — Atragene alpina Gmel. Sib. 4. p.194., Pall. Flor. Ross. 2. p. 69.; Clématis sibirica 
Mill, Dict. No. 12., and Dec. Prod. 1. p.10. 
Engravings. Sims, Bot. Mag., t. 1951.; and our fig. 27. 
Spec. Char., $c. Peduncles 1-flowered, almost equal in length with the 
leaves. Leaves biternate ; leaflets oblong-lanceolate, acuminated, serrated. 
Petals emarginate at the apex. (Don’s Mill.) A deciduous climber. 
Siberia, on mountains. Height 6 ft. to 12 ft. Introduced in 1753, Flowers 
white ; June and July. Fruit white : ripe in August. 
Decaying leaves brownish. 
Variety. A blue-flowered variety of this species is men- 
tioned in Bot. Mag., t.1591., which is probably the 
A. ochoténsis of Pallas, or possibly nothing more than 
A, alpina L. 
There is a considerable similarity in this to the last, 
in foliage and habit of growth; but it is less robust and 
less branchy ; its branches are more ligneous-looking, and 
the segments of the leaves longer. The calyxes of the 
flower are white, longer, and with the tips rather con- 
nivent than spreading. The bark and foliage are of a 
lighter colour, and the flowers longer than those of A. 
alpina ; and the latter are perhaps less numerous. 
27. Atrdgene(a.) sibfrica. 
A 3. d. america‘na Sims. The American Atragene. 
Identification. Sims, in Bot. Mag., t. 887. ; Don’s Mill., 1. p. 10. 
Synonyme. Clématis verticillaris Dec. Prod.1. p.10., Tor. & Gray, 1. p. 10. 
ngravings. Bot. Mag., 887.3; and our jig. 28. : 
Spec. Char., §c. Peduncles 1-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 Carolina, on mountains and rocky places. Height 101t. to 15 ft. 
Introduced in 1797. Flowers purplish blue; May to July. Fruit white ; 
ripe ?. Decaying leaves dark brown. 
Variety. 
4 A. a. 2 obliqua Dou. MS.—Leaflets bluntly serrated. 
This species is distinguishable from all the other Clema- ¢ 
tideze described in this work, by the peculiarity of its leaves 
being disposed, not oppositely in alternately decussating 
pairs, but in whorls of four. This is an anomalous cha- 
racteristic, which DeCandolle has expressed by his specific 
epithet verticillaris. The flowers are very large, and cam- BEY 
panulate. Sepals oblong-lanceolate, bright purplish blue. og. strégene americuna. 
(Tor. and Gray.) Layers. 
Other Species and Varieties of Atragene. — A. ochoténsis Pall. we consider as a 
variety of A. sibirica ZL. A. columbiana Nutt., C. columbiana Tor. § Gray, 1. 
p- 11., has ternate leaves, and pale blue flowers smaller than those of A, ameri- 
cana. It is a native of the Rocky Mountains, but has not yet been introduced. 
Tribe Il. Paonia cez Dee. 
Trib. Char. At once distinguishable from Clematidex, by the character of 
the anthers opening to admit the escape of the pollen on the side next 
the ovaries. In Clematidex, the anthers open on the side outward to the 
ovaries. The zstivation is also imbricate, and the carpels from one-seeded 
c 
