Jones: Flora of Illinois, 146. Caprifoliaceae 239 



long; river banks and woodland pastures, common. July. Coralberry. 

 Buckbrush. [6". vulgaris Michx.] S. orbiculatus Moencb 



4. LiNNAEA L. — Twinflower 

 L. americana Forbes. Winnetka, Cook Co., Vasey. Possibly now extinct in 

 III. [L. borealis L. var. americatia (Forbes) Rehd.] 



5. LoNlCERA L. — Honeysuckle 



(Xp/o5(eo;7 Adans.) 



1. Erect shrubs; leaves opposite, not connate-perfoliate; berries red. 



2. Corolla pink or white; leaves ovate-lanceolate, glabrous; berries united at 

 base; often planted and sometimes escaped from cult.; native of Asia. 

 May-June. Tatarian Honeysuckle L. tatarica L. 



2. Corolla yellowish white; leaves elliptical, ciliate; berries not united; moist 



woods, rare, Cook and Lake counties. Apr. -June. American Fly Honey- 

 suckle. [L. ciliata Muhl.J L. canadensis Marsh. 



1. Plants twining or trailing. 



3. Flowers in terminal clusters; upper leaves connate-perfoliate. 

 4. Corolla 2-lipped, the upper lip 4-lobed, the lower entire. 



5. Corolla greenish yellow, the tube somewhat gibbous. 



6. Corolla-tube 6-10 mm. long; filaments hirsute at base; leaves green 

 above, glaucous beneath; rocky soil, local; known from Lake, 

 Cook, La Salle, and Sangamon counties. May-June. Glaucous 



Honeysuckle [L. glauca Hill} L. dioica L. 



6. Corolla-tube 10-14 mm. long; filaments nearly glabrous; leaves 

 glaucous on both sides; woods; the common honeysuckle in 111. 

 May-June. Sullivant's Honeysuckle [L. parviflora Lam.; L. 



sullivantii Gray} L. prolijera (Kirsch.) Rehd. 



5. Corolla bright yellow or orange, its slender tube not gibbous; rocky 



woods, occasional. Apr.-May. Yellow Honeysuckle 



L. flava Sims 



4. Corolla red, tubular, the short limb nearly equally 5-lobed; cult, and 



sometimes escaped. May-Oct. Trumpet Honeysuckle 



L. sempervirens L. 



3. Flowers in pairs from the upper axils, white or pink, turning yellow, 2.5- 

 4 cm. long, fragrant; leaves ovate or oval, not connate-perfoliate; young 

 branches villous; escaped from cult, and occasionally spontaneous; in- 



trod. from Asia. May-July. Japanese Honeysuckle 



L. japonica Thunb. 



6. DiERViLLA Mill. — Bush Honeysuckle 



D. lonicera Mill. Rocky woods in n. 111., extending southw. to Kankakee 

 and La Salle counties. May-June. 



7. Triosteum L. — Horse-gentian 



1. Principal leaves with broadly dilated connate-perfoliate bases; corolla pur- 

 plish or dull red, 12-15 mm. long; sepals finely and evenly pubescent; 



