SYNOPSIS OF THE GENUS LONICERA. 39 
by bracts and bractlets, bractlets distinct or more or less 
connate, sometimes wanting, rarely tightly enveloping 
the ovaries and growing with them into a pseudocarp; 
berries usually red or scarlet, sometimes yellow, black or 
bluish-black, rarely white, distinct or in more or less 
connate pairs, rarely forming together with the bractlets a 
pseudocarp. 
More than 150 species in the temperate and subtropical 
regions of the northern hemisphere, northward extending 
to the arctic circle and south to the Malayan Archipelago, 
southern Asia, North Africa, Madeira and Mexico. 
SUBGENERA AND SECTIONS OF LONICERA. 
A. Flowers in two-flowered, axillary, peduncled or rarely almost sessile 
cymes, sometimes crowded at the end of the branches; leaves 
always distinct. I. Subgen. Chamaecerasus (sp. 1-131). 
B. Corolla actinomorphous, with 5 nectaries; leaves plane or cari- 
nate in vernation; branches with solid pith; accessory buds 
wanting. 1. Sect. IsoxYLOSTEUM (sp. 1-8). 
BB. Corolla zygomorphous, with 1 to 3 nectaries and with usually 
more or less unilaterally ventricose or gibbous, rarely calca- 
rate tube, and two-lipped or nearly regular limb; leaves con- 
volute or occasionally involute in vernation; accessory buds 
often present. 
C. Upright or sometimes procumbent shrubs; cymes always 
axillary; corolla with two-lipped or almost regular limb; 
fruits often connate, usually red. 
D. Branches with solid pith; ovaries more or less connate 
or almost distinct; bractlets wanting or partly or 
wholly connate, rarely free (limb then almost reg- 
ular), if partly connate the union closer between 
bractlets of different fiowers; corolla two-lipped or 
almost regular; ovaries 2- or 3-celled. 
2. Sect. Istxa (sp. 9-88). 
DD. Branches with quickly evanescent pith, fistulose; ova- 
ries always distinct; bractlets distinct or the bract- 
lets of the same flower more or less connate with 
each other; corolla always distinctly two-lipped; 
ovaries always 3-celled. 
83. Sect. CORLOXYLOSTEUM (sp. 89-102). 
