SYNOPSIS OF THE GENUS LONICERA. fot 
Subsect. 20. Longiflorae, subsect. nov. 
A group of 17 species distributed from Korea and Japan 
south to the Malayan Archipelago and west to the Hima- 
layas; one species in southwestern Europe and northern 
Africa. They are all twining shrubs with persistent, rarely 
deciduous leaves and hollow or in some species solid 
branches; flowers in axillary pairs, usually crowded toward 
the end of the branches and forming spikes or panicles; 
bracts subulate, foliaceous only in L. Japonica; bractlets 
separate, usually one-third to one-half as high as the ova- 
ries; calyx distinctly toothed; corolla two-lipped with 
slender tube, 4-16 cm. long, only in ZL. ferruginea but 
2.5 cm. long; style glabrous or short-pubescent, pilose 
only in L. dasystyla; fruit black or rarely white, crowned 
by the persistent calyx. The species nos. 115-118 and 
119-125 and 129-131 form groups of closer relation- 
ship, while the species 126-128 are not closely related to 
each other or to any of the other species. 
A. Style glabrous (or pilose in ZL. dasystyla); plants more or less pu- 
bescent, rarely glabrous. 
B. Branches and leaves hirsute by long spreading hairs, rarely the 
leaves only whitish-tomentulose beneath; leaves usually cor- 
date or subcordate, 5-10 cm. long. 
C. Corolla about 2.5 cm. long, densely pilose, limb slightly 
shorter than tube; ovaries usually pilose; branches, peti- 
oles and peduncles densely ferrugineously hirsute; leaves 
ovate to ovate-oblong, acuminate, ferrugineously pubes- 
cent beneath. 115. L. ferruginea, Rehd. 
CC. Corolla 5-6 cm. long, limb much shorter than tube; leaves 
oblong to ovate-lanceolate, acuminate, rarely obtuse and 
mucronulate. 
D. Flowers in dense terminal racemes or panicles, usually 
short peduncled; calyx about one-half as long as 
ovaries; corolla hairy and glandular without; leaves 
pilose or nearly glabrous above, pilose especially along 
the veins beneath and often grayish tomentulose; 
whole plant more or less hirsute with yellowish hairs. 
116. L. macrantha, Spreng. 
