Genus 4. 



GRAPE FAMILY. 



511 



5-7. Flowers perfect, or polygamo-monoecious, in compoiuid cymes or panicles. Petals 5, 

 spreading. Hypogynous disk obsolete or wanting in our species. Stamens 5. Ovary 2-celIed; 

 ovules 2 in each cavity ; style short, thick. Berry 1-4-seeded, the flesh thin, not edible. 



About 10 species, natives of eastern North America and Asia, the following typical. Besides 

 the'foUowing, another occurs in Texas. 



I. Parthenocissus quinquefolia (L.) Planch. Virginia Creeper. False Grape. 



American Ivy. Fig. 2842. 



Hedera quinquefolia L. Sp. PI. 202. 1753. 



Vitis quinquefolia Lam. Tabl. Encycl. 2: 135. 1793. 



Ampelopsis quinquefolia Michx. Fl. Bor. Am. i: 160. 



1803. 

 Parthenocissus quinquefolia Planch, in DC. Mon. 



Phan. 5: Part 2, 448. 1887. 

 P. vitacea A. S. Hitchc. Spring Fl. Manhattan 26. 



1894. 



High-climbing or trailing, glabrous or pubes- 

 cent. Tendrils usually numerous, and often pro- 

 vided with terminal adhering expansions, the vine 

 sometimes supported also by aerial roots ; leaves 

 petioled, digitately 5-foliolate (rarely 7-foliolate) ; 

 leaflets stalked, oval, elliptic, or oblong-lanceolate ; 

 2'-6' long, acute or acuminate, narrowed at the 

 base, coarsely toothed, at least above the middle, 

 pale beneath, dark green above, glabrous or some- 

 v.'hat pubescent ; panicles ample, erect or spread- 

 ing in fruit ; berries blue, about 6" in diameter, 

 usually 2-3-seeded ; peduncles and pedicels red. 



In woods and thickets, Quebec to Assiniboia, Mis- 

 souri, Florida, Texas and Mexico. Bahamas ; Cuba. 

 July. Fruit ripe in October. The foliage turns deep 

 red in autumn. The species consists of numerous 

 races, differing in pubescence, serration of leaflets 

 and in the tendrils. Five-finger-ivy or -creeper. Five- 

 leaf-ivy. Erroneously called woodbine. 



Parthenocissus tricuspidata (Sieb. & Zucc.) Planch., the Ampelopsis Veitchii of the gardeners, 

 a Japanese vine, clinging to walls by its very numerous disk-tipped tendrils, has the leaves sharply 

 3-lobed -OT sometimes 3-divided ; it is freely planted for ornament. 



Family 84. TILIACEAE Juss. Gen. 289. 1789. 



Trees, shrubs or rarely herbs, with fibrous bark, alternate (rarely opposite) 

 simple leaves, mostly small and deciduous stipules, and axillary or terminal gener- 

 ally cymose or paniculate flowers. Sepals 5, rarely 3-4, valvate, deciduous. Petals 

 of the same number, or fewer, or none, alternate with the sepals, mostly imbricated 

 in the bud. Stamens co, mostly 5-10-adelphons ; anthers 2-celled. Ovary i, sessile, 

 2-io-celled ; style entire or lobed ; ovules anatropous. Fruit i-io-celled, drupa- 

 ceous or baccate. Embryo strai,a;ht, rarely curved ; cotylendons ovate or orbicular ; 

 endosperm fleshy, rarely wanting. 



About 35 genera and 275 species, widely distributed in warm and tropical regions, a few in the 

 temperate zones. 



I. TILIA [Tourn.] L. Sp. PI. 514. 1753- 



Trees, with serrate cordate mainly inequilateral leaves, and axillary or terminal, cymose 

 white or yellowish perfect flowers, the peduncles subtended by and partly adnate to broad 

 membranous bracts. Sepals S. Petals 5, spatulate, often with small scales at the base. Stamens 

 00; filaments cohering with the petal-scales or with each other in 5 sets. Ovary 5-celled; 

 cells 2-ovuled; style simple; stigma 5-toothed. Fruit dry, drupaceous, globose or ovoid, inde- 

 hiscent, 1-2-seeded. Seeds ascending; endosperm hard; cotyledons broad, S-lobed, corru- 

 gated. [The ancient Latin name.] 



About 20 species, natives of the north temperate zone, i in the mountains of Mexico. Type 

 species : Tilia europacn L. 



Leaves smooth or very nearly so, sometimes glaucous. i. T. americana. 



Leaves mostly densely hairy beneath, not glaucous. 



Leaves brown-hairy or rusty-hair>' beneath. 2. T. pubescens. 



Leaves white, grey or silvery beneath. 



Bracts mostly abruptly narrowed at the base, sessile or nearly so. 3. T. heterophylla. 



Bracts mostly attenuate at the base, distinctly stalked. 4. T. Michauxii. 



