184 MISSOURI BOTANICAL GARDEN. 
Subsect. 23. Eucaprirouia, Spach. 
Caprifolium § Hucaprifolium, Spach, Hist. Nat. Vég. 
8:334 (1839).—Dippel, Handb. Laubholzk. 1: 202 
(1889), in part. 
Lonicera § Huropaeae, Zabel in Beissner, Schelle & 
Zabel, Handb. Laubholz-Ben. 447 (1903). 
This group contains 7 species, one native to China, the 
others distributed throughout the Mediterranean region and 
extending to northern Europe and the Caucasus. They 
are twining shrubs with deciduous or sometimes persistent 
leaves, the upper pairs of the flowering branches mostly 
connate; flowers in terminal whorls usually disposed in 
dense heads or spikes, not in remote whorls unless in 
the axils of leafy disks; bractlets present, sometimes as 
long as ovaries, or wanting; calyx small, often obsolete ; 
corolla two-lipped, 3-8 cm. long, white or yellowish-white, 
often tinged with pink or purple without, rarely yellow; 
tube slender, two or more times as long as the limb, 
glabrous within, except in L. implexa and tragophylla; 
style glabrous or in L. implexa with scattered hairs above 
the middle. 
A. Whorls of flowers all or at least the lower ones in the axils of 
connate ‘leaves. 
B. Tube within and style pilose above the middle; stamens 
much shorter than limb; tube 3 to 4 times as long as limb; 
corolla 3-4.5 cm. long, yellowish-white, often suffused with 
pink; usually 2-5 whorls of flowers, all in the axils of connate 
leaves; leaves persistent, oval or ovate to narrowly oblong, 
mostly sessile, 2.6-5 cm. long, glabrous or pubescent. 
147. L. implexa, Ait. 
BB. Tube within and style glabrous, stamens as long as limb; leaves 
deciduous, the lower ones petioled. 
C. Bractlets wanting or minute; usually one or two whorls of 
flowers, each in the axils of connate leaves; corolla white, 
often suffused with pink or purple, 4-5 cm. long, glabrous 
or pilose without; leaves oval to elliptic, 5-10 cm. long, 
glabrous or nearly so, obtusish. 148. Z. Caprifolium, Linn. 
