4a. Leaf-bases broadly connate and 2-5 cm. wide =Feverwort, Triosteum perfoliatum.= 4b. Leaf-bases narrowly connate, not over 1 cm. wide =Feverwort, Triosteum aurantiacum.= 5a. Climbing vines (spring and early summer) (Honeysuckle) --6. 5b. Erect or spreading shrubs or small trees --11. 6a. Flowers in 2-flowered axillary clusters (flowers white or pink) =Honeysuckle, Lonicera japonica.= 6b. Flowers in terminal clusters --7. 7a. Leaves distinctly pubescent beneath (flowers yellow) --8. 7b. Leaves glabrous beneath, or very minutely puberulent --9. 8a. Leaves pubescent above =Honeysuckle, Lonicera hirsuta.= 8b. Leaves glabrous above =Honeysuckle, Lonicera glaucescens.= 9a. Corolla purple on the outside, glabrous within =Honeysuckle, Lonicera caprifolium.= 9b. Corolla yellow on the outside (or slightly tinged with purple), pubescent within --10. 10a. Corolla-tube 6-8 mm. long =Honeysuckle, Lonicera dioica.= 10b. Corolla-tube 11-14 mm. long =Honeysuckle, Lonicera sullivantii.= 11a. Corolla tubular at base; style long and slender --12. 11b. Corolla rotate or somewhat bell-shape, style very short (flowers white, late spring or early summer) --22. 12a. Flowers yellow or yellowish (spring and early summer) --13. 12b. Flowers white, pink, or red --18. 13a. Leaves serrate (5-10 dm. tall) =Bush Honeysuckle, Diervilla lonicera.= 13b. Leaves entire; flowers in pairs (Honeysuckle) --14. 14a. Each pair of flowers subtended by 2 broad leaf-like bracts (1-3 m. high) =Honeysuckle, Lonicera involucrata.= 14b. Bracts at the base of each pair of flowers linear or narrowly lanceolate --15. 15a. Native species of woods and bogs --16. 15b. Introduced species, growing mostly near dwellings; leaves very pubescent beneath =Honeysuckle, Lonicera xylosteum.= 16a. Peduncles 15 mm. long or more (1-4 m. high) --17. 16b. Peduncles about 5 mm. long (1 m. high, or less) =Honeysuckle, Lonicera coerulea var. villosa.= 17a. Leaves ciliate =Honeysuckle, Lonicera canadensis.= 17b. Leaves not ciliate =Honeysuckle, Lonicera oblongifolia.= 18a. Corolla irregular, over 1 cm. long (1-4 m. high; spring) =Honeysuckle, Lonicera tatarica.= 18b. Corolla regular, less than 1 cm. long (5-15 dm. high; flowers white or pink, in axillary clusters, early summer) --19. 19a. Flowers in axillary spikes =Wolfberry, Symphoricarpos occidentalis.= 19b. Flowers almost sessile in the axils --20.