LONICERA 



287 



1, compound, 2-3-parted, ovary inferior, 2-3-celled (rarely 1-celled), 

 style 1, stigma 1, capitate or 2-3-lobed; fruit a berry, usually 2-3-celled, 

 few-seeded, in species with flowers in pairs, the two berries sometimes 

 coalescent. 



A genus of about 100 species, chiefly of the north temperate zone. 



Key to the Species 



1. Flowers terminal, in dense clusters or inter- 

 rupted spikes, upper leaves of flowering- 

 shoots connate-perfoliate, usually vines : 

 sub-genus Caprifolium 



a. Flowers long trumpet-shaped, cultivated 



b. Flowers with a short tube and spreading 2- 



lipped limb, native 

 ( 1 ) Margin of leaves parchment-like, not 

 ciliate 



(a) Leaves nearly or quite glabrous 



(b) Leaves pubescent beneath 



L. sempcrvirens 



(2) Margin of leaves green, ciliate 

 Flowers in pairs, on axillary peduncles, none 

 of the leaves connate-perfoliate, mostly up- 

 right shrubs : sub-genus Xylosteum 



a. Peduncles long and slender, over 1 cm. long 



( 1 ) Leaves pubescent, native shrubs 



(a) Leaves thick, woolly, corolla 2 -lipped 



(b) Leaves thin, bristly, corolla nearly 



regular 



(2) Leaves glabrous, corolla not 2-lipped. 



cultivated 



b. Peduncles mostly under 1 cm. long, leaves 



thick and veiny 



( 1 ) Ovaries united, berry blue-black, native 



(2) Ovaries separate, berries red, cultivated 



L. dioica 

 L. dioica 



glaucescens 

 L. hirsuta 



L. oblongi folia 

 L. canadensis 

 L. tatarica 



L. cosrulea 



L. Morroivi 



Lonicera sempervirens Linne 1753 Trumpet Honeysuckle 



Tall twining vine, bark pale brown, shredded, twigs glabrous; leaves 

 broad-oval, ovate, or the lower ones lanceolate, the uppermost pair on 

 flowering shoots connate-perfoliate forming usually a broad elliptical disk, 

 upper side dark green, smooth, lower side glaucous, smooth or somewhat 



