LONICERA 289 



throat, its limb scarcely spreading, about 5 mm. long ; berries scarlet : 

 semper virens, evergreen, a character which it has in the southern 

 states but not in Minnesota. 



Cultivated ; native, Maine to Nebraska and southwards. A hardy and 

 handsome climber, often grown upon porches, etc. Its conspicuous scarlet 

 flowers are in bloom for a long period in summer. 



Lonicera dioica L i 11 n e 1767 

 Lonicera glauca Hill 1769 

 Lonicera parviflora Lamarck 1783 



Twining vine or shrubby, 1-3 m. high; bark grayish, peeling on old 

 stems, twigs glaucous and glabrous; leaves oblong or elliptical, the upper- 

 most 2-4 pairs on flowering stems connate-perfoliate, the uppermost pair 

 forming a rhomboid or elliptic usually obtusely angled disk, upper side 

 of leaves bright green, glabrous, lower side very glaucous, entirely 

 glabrous or with a few scattered hairs, margin parchment-like and with- 

 out hairs, tip obtuse to rounded, base when not connate, sessile and clasp- 

 ing; flowers in dense terminal clusters, calyx-limb barely 1 mm. long, 

 obscurely 5-toothed, corolla yellowish, or more frequently dull-maroon, 

 with a yellowish tube, its tube 7-10 mm. long, gibbous at the base and 

 expanding to a width of about 3 mm. at the throat, its limb 2-lipped, cleft 

 into 5, somewhat unequal linear petals, 5-10 mm. long, corolla smooth 

 without, hairy within, stamens exserted, filaments hairy, style hairy, 

 stigma capitate ; berries red : dioica, dioecious which this plant is not. 



Maine to Manitoba, south to North Carolina, Ohio and Missouri. In 

 its typical form occurring somewhat rarely in copses and rocky woods in 

 eastern and southern Minnesota. Flowers in May and June. 



Lonicera dioica var. glaucescens (Rydberg) 

 Lonicera glaucescens Rydberg 1897 



Leaves ovate to obovate, often only one pair connate-perfoliate, the 

 lower ones narrowed at the base and sometimes short-petioled, glabrous 

 on the upper side and margin but the lower side more or less hairy, often 

 densely so ; flowers more frequently pale yellow, tube of corolla hairy on 

 the outside, 10-15 mm. long, somewhat more slender than in the type. 



Ontario and Michigan to Saskatchewan, south to Virginia, Nebraska 

 and Wyoming. Rocky woods, copses, bluffs, etc., throughout the w r ooded 

 part of Minnesota. Much more abundant than the type. 



