A deciduous twiner, with glandular-downy, slender young shoots. Leaves oval, 2 to 31⁄2 in. long, 11⁄4 to 2 in. wide, dark dull green above, grey beneath, downy on both sides especially beneath, ciliate, uppermost one or two pairs connate, pointed, lower ones stalked. Flowers orange-yellow, about 1 in. long, produced in several whorls on short-stalked spikes at the end of the shoot, and sometimes from the axils of the connate leaves beneath. Corolla two-lipped, the tube slender but slightly swollen towards the base, covered outside with sticky glandular down; hairy within. Bot. Mag., t. 3103.
Native of N.E. America; introduced in 1822. It is now uncommon and L. glaucescens has been made to do duty for it in nurseries and gardens, but that species is not glandular on the branchlets or corolla, and its leaves are not downy above. It is one of the parents of L. × brownii (q.v.).