§ 2. CAPRIFÒLIUM. Twining shrubs, with the flowers in sessile whorled clusters from the axils of the (often connate) upper leaves, forming interrupted terminal spikes; calyx-teeth persistent on the (red or orange) berry.
[*] Corolla trumpet-shaped, almost regular; stamens and style little exserted.
5. L. sempérvirens, Ait. (Trumpet Honeysuckle.) Flowers in somewhat distant whorls, scentless, nearly 2´ long, deep red outside, yellowish within or rarely throughout; leaves oblong, smooth, the lower petioled, the uppermost pairs connate.—Copses, Conn. to Ind., and southward; common in cultivation. May–Oct.—Leaves deciduous at the north.
[*][*] Corolla ringent; the lower lip narrow, the upper broad and 4-lobed; stamens and style conspicuously exserted.
[+] Corolla-tube an inch long, glabrous inside; stamens and style glabrous.
6. L. gràta, Ait. (American Woodbine.) Leaves smooth, glaucous beneath, obovate, the 2 or 3 upper pairs united; flowers whorled in the uppermost axils; corolla whitish with a purple tube, fading yellowish, not gibbous at base, fragrant.—Rocky woodlands, N. J. and Penn. to Mich. and Mo., and southward; also cultivated. May.
[+][+] Corolla hairy within, the tube 6´´ long or less.
7. L. hirsùta, Eaton. (Hairy Honeysuckle.) Twining and rather high-climbing; leaves deep green above, downy-hairy beneath, as well as the branches, veiny, dull, broadly oval, the uppermost united, the lower short-petioled; flowers in approximate whorls; tube of the (orange-yellow) clammy-pubescent corolla gibbous at base, slender.—Damp copses and rocks, Maine to Penn., Mich., and Minn. July.—A coarse large-leaved species.
8. L. Sullivántii, Gray. At length much whitened with glaucous bloom, 3–6° high, glabrous; leaves oval and obovate-oblong (2–4´ long), sessile and mostly connate on the flowering stems, the uppermost into an orbicular disk; corolla pale yellow; filaments nearly glabrous. (L. flava of former edition, mainly.)—Ohio to Ill., Minn., and L. Winnipeg; also in Tenn. and N. C.
9. L. glaùca, Hill. Glabrous, or lower leaf surface sometimes puberulent, 3–5° high; leaves oblong (2–3´ long), glaucous but less whitened than in the last, the 1–4 upper pairs connate; corolla greenish-yellow or purplish; tube only 3–4´´ long, within and also style and base of filaments hirsute. (L. parviflóra, Lam., and part of var. Douglásii, Gray.)—Rocky grounds, N. Eng. and Penn. to Minn., and northward.