174 
. Buds, petioles etc. very red-scurfy. V. rufidulum. 
CAPRIFOLIACEAE, ' 
Buds etc. rather gray-brown, glabrescent, 14. 
. Leaves small (about 4X6 cm.), scarcely taper-pointed : 
twigs often stiff and spreading. . V. prunifolium. 
Leaves larger (about 5X8 cm.), acuminate. V. Lentago. 
. Petiole without nectar-glands. 16. 
Several nectar-glands on petiole. 17. 
. Pubescent: glandless: with stipules. V. acerifolium. 
Glabrate: lower teeth glandular: no stipules. V. pauciflorum. 
. Glands large (about I mm. in diameter). 18. 
Glands small (about .5 mm.). V. americanum. 
. Some flowers fertile. 109. 
Flowers all showy and sterile. (Snowball). V. Opulus. 
. Dwarf. V. Opulus nanum. 
Tall shrubs. 20. 
. Sterile flowers large (25 mm.), V. Sargentii. 
Sterile flowers rather small (15-20 mm.). 21. 
. Fruit red. V. Opulus. 
Fruit yellow. V. Opulus xanthocarpum. 
SY MPHORICARPOS. 
Deciduous small shrubs with slender terete twigs ; small Peed 
continuous or evanescent pith; opposite somewhat raised crescent- 
shaped leaf-scars with a single bundle-trace; no _stipule-scars; 
ovoid buds with about 2 pairs of exposed scales; simple entire 
or exceptionally lobed ovate petioled leaves; small white or rosy 
bell-shaped perfect gamopetalous flowers, hairy within; and white 
or 
i 
red inferior berries. 
Pith continuous :. leaves small (scarcely 40 mm.), white 
beneath: fruit red. 2. 
Pith excavated: leaves larger: fruit white. (Snowberry). 3. 
. Leaves unvariegated. (Coral berry). S. orbiculatus. 
Leaves variegated. S. orbiculatus variegatus. 
. Leaves often deeply lobed, glabrate: fruit late. X S. Heyeri. 
Leaves very rarely a little lobed. 4. 
