466 MR. E. A. NEWELL ARBER ON THE 
ovaries, e. g., L. ciliata, Mihl.*; while in others the two flowers 
are always free. Such instances as L. ciliata form a gradation 
to the type of LZ. Xylosteum, in which the ovaries are united for 
rather less than half their length. This union takes place only 
in one plane, which is the median plane of the inflorescence. 
In this region, the parenchymatous tissues of the walls of the two 
inferior ovaries, or of the pericarps of the two berries, are in 
organic continuity. The fruits are united to a less extent com- 
paratively than the flowers, and thus the two spherical red 
berries are nearly distinct. 
In this species the bracteoles are very small and inconspicuous, 
and free from one another. In others, however, such as 
L. nigra, L., which possesses the same degree and type of 
synanthy, they are much larger, and sheath the lower portion of 
the ovaries. In all the flowers of Z. nigra which I have 
examined, the bracteoles are united in pairs on one side, but free 
laterally. In others the four bracteoles may all be free t. The 
bracteoles do not, however, increase in size proportionately to 
the berries, and the fruits of Z. nigra are similar to those of 
LI. Xylosteum. 
The following species possess the same type and degree of 
synanthy as L. Xylostewm. 
Type of Lonicera Xylosteum, L. 
L. bracteolaris, Boiss. & Buhse tf. 
L. cerulescens, Dipp. § 
L. decipiens, Hook. f. & Thoms. 
L. floribunda, Boiss. & Buhse. 
L. fragrantissima, Lindl. & Paxt. 
L. hellenica, Orph. 
L. leiophylla, A. Kern. 
L. Maximowiczii, Maxim. 
L. nigra, L. 
L. phyllocarpa, Maxim. || 
L. Standishii, Hook. 
L. Tatarinowii, Maxim. || 
* Dippel (1889), p. 252. 
t Koehne (1893), p. 548. t Boissier (1875), p. 9. 
§ Dippel (1889), p. 233. I have not seen this species. 
| On the authority of Maximowicz (1859), p. 138. 
