180 CAPKIFOLIACEAE 



1. S. Canadensis L. ELDERBERRY. 3-15 high : leaflets 3-11, 

 ovate, acuminate, serrate : cymes somewhat flat-topped : fruit dark pur- 

 ple. Abundant in open grounds. June-July. 



2. VIBURNUM L. 



Shrubs with white flowers in flat compound cymes, as in Sambucus. 

 Fruit a one-seeded drupe. 



Leaves conspicuously acuminate. 1. V. Lentago. 



Leaves not acuminate. 2. V. prunifoUum. 



1. V. Lentago L. BLACK HAW. 5-15 high : leaves ovate, petioled, 

 sharply serrate, glabrous, usually long-acuminate-pointed : cymes sessile, 

 several- rayed : drupe 6 X/ long, bluish-black. Not uncommon in wood- 

 lands. May. 



2. V. prunifolium L. BLACK HAW. About the size of the last, but 

 the leaves are broadly oval, obtuse or acutish : cyme sessile, several- rayed, 

 2 X -4 X broad : drupe oval, bluish- black and glaucous, 4 // -5 // long. Eocky 

 woods east of Independence. Bather rare. May. 



3. TRIOSTEUM L. 



Perennial herbs with opposite connate-perfoliate leaves, the flowers ses- 

 sile in their axils. Calyx with five rather foliaceous lobes. Corolla cam- 

 panulate, gibbous at base, unequally 5 lobed. Stamens five. Stigma 3- 

 5-lobed. Fruit a dryish drupe containing three 1-seeded nutlets. 



1. T. perfoliatum L. FEVERWORT. 2-4 high, hairy : leaves ovate, 

 strongly narrowed at base : flowers brownish-purple Rather common in 

 rich woods. May-June. 



4. SYMPHORICARPOS Juss. 



Shrubs with short-petioled leaves and axillary clustered flowers. Calyx 

 slightly 4-5-toothed. Corolla campanulate, 4-5-lobed. Stamens 4-5. 

 Stigma capitate. Fruit a 4-celled, 2-seeded berry. 



1. S. orbiculata Moench. BUCKBUSH. BUCKBERRY. Much-branch- 

 ing, 2-10 high : leaves oval, undulate, hairy beneath : style and corolla 

 sparingly bearded : fruit reddish. Woods throughout. Probably our 

 most common undershrub. July. 



5. LONICERA L. 



Ours is a twining shrub with opposite connate-perfoliate entire leaves. 

 Calyx 5-toothed. Corolla tubular or funnel-form, glabrous at base, irreg- 

 ularly 5-lobed. Stigma capitate. Ovary 2-3-celled, many-ovuled. Fruit 

 a several-seeded berry. 



1. L. dioica L. HONEYSUCKLE. Glabrous, 3-8 long: leaves gla- 

 brous and glaucous : corolla yellow : stamens hirsute below. Occasional 

 along the Rocky Missouri River bluffs, near Pixleys and along Brush 

 Creek. May-June. 



