LINDEN FAMILY 157 



2. V. aestivalis Michx. Summer Gkapk. Stem climbing high; 

 bark shreddy. Leaves broadl}' heart-shaped, 8-5-lobed, the lobes 

 dentate, notches rounded, white-woolly when young, often nearly 

 smooth when old ; tendrils or panicles opposite 2 out of every 3 

 leaves, panicles long and slender. Fruit dark blue, small, very acid. 

 In rich woods E. and S.* 



3. V.cinereaEngelm. Dow^ny Grape. Branchlets angular, covered 

 with whitish or grayish down. Leaves entire or slightly 3-lobed, with 

 whitish or grayish down, especially on the under side. Berries small, 

 black,- without bloom. S.W. 



4. V. cordifolia Michx. Frost Grape, Chickex Grape. Leaves 

 rather smooth, thin, and shining, either not lobed or somewhat 3-lobed, 

 heart-shaped, with the notch at the base deep and acute, taper-pointed, 

 with large, sharp teeth. Flower clusters large and loose. Grapes 

 shining black, very sour, not ripening until after frosts ; seeds 1 or 

 2, rather large. Moist thickets and banks of streams S. 



5. V. vulpina L. Riverside or Sw'EET-Scented Grape. Re- 

 sembling V. cordifolia, but the leaves more shining and more com- 

 monly 3-lobed. Fruit bluish-black, with a bloom, moderately sweet, 

 i in. or more in diameter, beginning to ripen in July. Along ponds 

 and streams, especially W. and S.W. 



6. V. rotundifolia Michx. ^Muscadine Grape. Stem climbing 

 high; joints short; bark not shreddy; wood very hard, often pro- 

 ducing long, aerial roots. Leaves orbicular, heart-shaped at the base, 

 coarsely toothed, nearly or quite smooth. Panicle small. Grapes few 

 in a cluster, large. The original form of the Scuppernong grape. S.* 



64. TILIACEiE. Linden Family 



Trees or shrubs, rarely herbs. Leaves alternate, w-ith 

 stipules. Flowers bisexual in cymes, the latter usually in 

 corymbs or panicles. Sepals 5. Petals 5 or fewer, or want- 

 ing. Stamens many, inserted on a s woollen disk. Ovary 2-10- 

 celled, with one or more ovules in each cell. Fruit 1-12-celled, 



dry or berry-like. 



TILIA L. 



Trees with rough gray bark on the trunk ; bark of the twigs 

 smooth, lead-colored ; wood white and soft. Leaves cordate, 

 usually inequilateral. Cymes axillary or terminal, peduncles 

 adnate to a large, prominently veined, leaf-like bract. Flowers 

 yellowish-white. Sepals 5. Petals 5. Stamens many, in 5 



