304 The Ohio Naturalist. [Vol. XIV, No. 6, 



wide; petioles | to J inch long; flower cluster dense, many flowered 

 becoming spicate; corolla campanulate, pink, somewhat pubescent 

 within, about j inch in length; stamens included; fruit a pur- 

 plish-red globose berry ^ to J inch in diameter. In rocky fields 

 and along river banks. General. 



Lonicera L. Honeysuckle. 



Erect shrubs or woody cliinbing vines with oval or ovate, 

 usually entire leaves; flowers often in pairs, spicate, or clustered, 

 bisporangiate, pentamerous, usually zygomorphic; corolla com- 

 monly gibbous at the base, somewhat 2-lipped; ovulary 2-3-locu- 

 lar, sometimes 1-locular; ovules many, pendulous; style slender, 

 stigma sometimes capitate; fruit a fleshy berry; embryo terete. 



Key to the Species. 



1. All the leaves distinct, flowers in pairs on axillary peduncles. 2. 



1. Upper leaves connate-perfoliate, flowers in heads or interrupted spikes. 6 



2. Shrubs, not twining; cluster small with small, linear to subulate bracts; 



flowers small, f to f inch long. 3. 



2. Twining vines; flowers large, 1| to If inches long, white or pink fading 



to yellow. L. japonica. 



3. Corolla almost actinomorphic; twigs glabrous; leaves green on both 



sides. 4. 



3. Corolla zygomorphic, more or less 2-lipped; twigs pubescent when young, 



sometimes becoming glabrous when mature; leaves pale green, lighter 

 beneath than above. 5. 



4. Leaves not ciliate; bracts linear; corolla with wide spreading lobes about 



as long as the tube, white to rose colored. L. tartarica. 



4. Leaves strongly ciliate; bracts small subulate; corolla lobes shorter 



than the tube, greenish yellow. L. canadensis . 



5. Leaves glabrous or nearly so when mature, not ciliate; peduncles \ to \\ 



inches long, slender. L. oblongifolia. 



5. Leaves persistantly pubescent beneath, ciliate; peduncles j to 5 inch 



long. L. xylosteiim. 



6. Corolla tubular, nearly regular, glabrous; leaves dark green above, 



slightly glaucous beneath; stamens and style little exserted. 



L. sempervirens. 



6. Corolla 2-lipped; upper lip consisting of four lobes. 7. 



7. Corolla glabrous within; terminal cluster sessile. L. caprijolium. 



7. Corolla pubescent within; flower cluster more or less stalked. 8. 



8. Leaves pubescent on both sides, very strongly so beneath, only slightly 



glaucous. L. hirsuta. 



8. Leaves glabrous on both sides or only slightly pubescent beneath; very 



glaucous. 9. 



9. Leaves glabrous above but pubescent beneath especially along the 



veins; corolla strongly gibbous at the base. L. glaucescens. 



9. Leaves glabrous on both sides; corolla tube somewhat gibbous. 10. 



10. Corolla tube not much exceeding j inch in length; uppermost leaf- 



disks oblong. L. dioica. 

 10. Corolla tube usually ^ inch long; uppermost leaf-disks orbicular. 



L. sullivantii. 



