204 CAPRIFOLIACE^E. (HONEYSUCKLE FAMILY.) 



the uppermost leaves or leaf-like connate bracts ; corolla smooth (whitish with a 

 purple tube, fading yellowish), not gibbous at the base, fragrant. — Rocky wood- 

 lands, New York, Penn., and westward : also cultivated. May. 



3. L. flava, Sims. (Yellow Honeysuckle.) Leaves smooth, very pale 

 and glaucous both sides, thickish, obovate or oval, the 2-4 upper pairs united into 

 round cup-like disks ; flowers in approximate whorls ; tube of the smooth (light 

 yellow) corolla somewhat gibbous ; filaments almost or quite smooth. — Rocky 

 banks. Catskill mountains (Pursh), Ohio to Wisconsin (a form with rather 

 short flowers), and southward along the Alleghany Mountains. June. 



4. L. parviflora, Lam. (Small Honeysuckle.) Leaves smooth, ob- 

 long, green above, very glaucous beneath, the upper pairs united, all closely sessile ; 

 flowers in 2 or 3 closely approximate whorls raised on a peduncle ; corolla gib- 

 bous at the base, smooth outside (greenish-yellow tinged with dull mirple), short 

 (9" long); filaments rather hairy below. — Rocky banks, mostly northward. 

 Maj-, June. — Stem commonly bushy, only 2° -4° high. 



Var. Douglasii. Leaves greener, more or less downy underneath when 

 young, or ciliate; corolla crimson or deep dull purple. (L. Douglasii, DC.) — 

 Northern Ohio to Wisconsin and northward. 



5. L. hil'SUta, Eaton. (Hairy Honeysuckle.) Leaves not glaucous, 

 doiony -hairy beneath, as well as the branches, and slightly so above, veiny, dull, 

 broadly oval ; the uppermost united, the lower short-petioled ; flowers in ap- 

 proximate whorls ; tube of the (orange-yellow) clammy-pubescent corolla gibbous at 

 the base, slender. — Damp copses and rocks, Maine to Wisconsin northward. 

 July. — A coarse, large-leaved species. 



§2. XYL6STEON, Juss. Upright bushy shrubs : leaves all distinct at the base : 

 peduncles axillary, single, 2-Jlowered at the summit; the two berries sometimes 

 united into one : calyx-teeth not persistent. 

 * The two flowers involucrate by 4 conspicuous and broad Jbliaceous bracts. 



6. L. involucrata, Banks. Pubescent, or becoming glabrous ; branches 

 4-angular ; leaves (3' - 6' long) ovate-oblong, mostly pointed, pctioled, and with 

 a strong midrib, exceeding the peduncle ; corolla yellowish, viscid-pubescent, 

 cylindraceous (6" -8" long); ovaries and globose berries distinct. — Deep 

 woods, Lake Superior ( C. G. Loring, Jr., Dr. Bobbins) and westward. June. 



* * Bracts (2 or sometimes 4) at the base of the ovaries minute. 



7. L. ciliata, Muhl. (Fly-Honeysuckle.) Branches straggling (3°- 

 5° high) ; leaves oblong-ovate, often heart-shaped, petioled, thin, downy beneath ; 

 Jiliform peduncles shorter than the leaves; corolla funnel-form, almost spurred 

 at the base (greenish-yellow, %' long), the lobes nearly equal ; berries separate 

 (red). — Rocky woods, Mass. to Penn., Wisconsin, and northward. May. 



8. L. ca^rulea, L. (Mountain F.) Low (1° -2° high) ; branches up- 

 right ; leaves oval, downy when young; peduncles very short; bracts awl-shaped, 

 longer than the ovaries of the two (yellowish) flowers, which are united into one (blue) 

 berry. (Xylosteum villosum, Michx.) — Mountain woods and bogs, Massachu- 

 setts to Wisconsin, northward. May. (Eu.) 



9. L. oblongifblia, Muhl. (Swamp F.) Branches upright; leaves ob- 

 long, downy when young, smooth when old ; peduncles long and slender ; bracts 



