290 HONEYSUCKLE FAMILY 



This form has been described as a distinct species but in Minnesota 

 it intergrades completely with L. d i o i c a. Only two of the Minnesota 

 specimens of that species in the University herbarium are completely 

 glabrous. Several others, agreeing in all other respects with typical L. 

 dioica have a few scattered hairs on the lower side of the leaf: the 

 form and number of the perfoliate disks often varies greatly in the same 

 individual, and out of 20 flowering specimens showing the foliage char- 

 acters of the variety glaucescens five have the floral characters of 

 typical L. dioica. Very pubescent specimens of this variety are sonic- 

 times confused with L. hirsuta but can be readily distinguished from 

 that species by their smooth and parchment-like leaf margin. 



Lonicera hirsuta Eaton 1818 



Twining vine, bark grayish and peeling, twigs usually pubescent 

 above; leaves broadly ovate to orbicular, the upper 1-2 pairs on flowering 

 branches connate-perfoliate, the uppermost disk orbicular or rhombic, 

 upper side dark green slightly hairy, lower side whitish and densely hairy, 

 margin ciliate and not at all parchment-like, tip of leaf obtuse or short- 

 acuminate, base, when not connate, rounded, sessile or short-petioled, 

 length 6-11 cm., width 4-7 cm.; flowers in dense terminal clusters, often 

 with either sessile or stalked clusters in the axils of the lower perfoliate 

 disk, calyx-limb scarcely 1 mm. long, obscurely 5-lobed, corolla yellow, 

 its tube 10-18 mm. long, gibbous at the base, expanding gradually into 

 the 2-lipped, 5-petaled limb of about the same length, corolla-tube hairy 

 and glandular on the outside, hairy within, stamens and style exserted, the 

 filaments and style somewhat hairy below : hirsuta, hairy, bearded. 



Vermont, Ontario and Manitoba, south to Pa., Mich, and Minn. In 

 Minnesota common in the region of coniferous forest in the northern 

 and northeastern parts of the state, not occurring elsewhere. Flowers in 

 June and July. 



Lonicera oblongifolia (Goldie) Hooker 1833 



Shrub, 5-15 dm. high, bark grayish, twigs puberulent ; leaves ovate- 

 lanceolate to oblong, thick, dark green above, pale beneath, finely-woolly 

 pubescent, especially beneath, margin thickened, woolly but not ciliate, 

 tip acute or obtuse, base tapering, length 2.5-10 cm., width 1-3.5 cm., 

 petioles 2 mm. long or wanting ; flowers in pairs in the axils of the lower 

 leaves, peduncles slender, 1-3 cm. long, bracts at base of ovaries very 

 minute or deciduous, before the flowers open, ovaries more or less fused, 



