t T T O 



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. 



lOa. Corolla-tube 6 8 mm. long Honeysuckle, Lonicera dioica. 

 lOb. Corolla-tube 11 14 mm. long 



Honeysuckle, Lonicera sullivantii. 



lla. Corolla tubular at base; style long and slender 12. 

 lib. 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 sum- 

 mer) 13. 



12b. Flowers white, pink, or red 18. 

 13a. Leaves serrate (5 10 dm. tall) 



Bush Honeysuckle, Dierrilla 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 inyolucrata. 



14b. Bracts at the base of each pair of flowers linear or nar- 

 rowly 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 Tar. yillosa. 



17a. Leaves ciliate Honeysuckle, Lonicera canadensis. 



17b. Leaves not ciliate Honeysuckle, Lonicera oblonglfolia. 



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; flow- 

 ers 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. 

 20a. Flowers numerous in each axil 



Indian Currant, Symphoricarpos orbiculatus. 

 20b. Flowers 1 or 2 in each axil (Snowberry) 21. 



