rminal cymes --20.

20a. Stem smooth or nearly so (2-4 dm. high)
=Bedstraw, Galium concinnum.=

20b. Stem hispid with reflexed bristles (5-15 dm. long)
=Bedstraw, Galium asprellum.=

CAPRIFOLIACEAE, the Honeysuckle Family

Shrubs or herbs, with opposite leaves; corolla regular or irregular,
petals 4 or 5, united; stamens 4 or 5; ovary inferior, 1-5-celled.

1a. Leaves compound (shrubs 1-4 m. high; flowers white, in large
clusters in early summer) (Elder) --2.

1b. Leaves simple --3.

2a. Pith of the twigs white; inflorescence flattened or convex
=Elder, Sambucus canadensis.=

2b. Pith of the twigs brown; inflorescence pyramidal
=Elder, Sambucus racemosa.=

3a. Plant trailing; flowers nodding, in pairs (1 dm. high; flowers pink,
summer) =Twin Flower, Linnaea borealis var. americana.=

3b. Erect herbs (6-12 dm. high; flowers dull-red, axillary, early
summer) (Feverwort) --4.

3c. Shrubs, small trees, or woody vines --5.

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 ba