6l6 FLORA. 



or the middle one lobed; inflorescence umbel-like; berries obovoid, nearly black, 

 l-2-seeded, on recurved pedicels. Karis. and Mo. to Tex. and Fla. 



4. PARTHENOCISSUS Planch. 



Woody vines, the tendrils often tipped with adhering expansions (disks), or 

 sometimes merely coiling, our species with digitately compound leaves. Flowers 

 perfect, or polygamo-monoecious, in compound cymes or panicles. Petals 5, 

 spreading. Stamens 5. Ovary 2-celled; ovules 2 in each cavity; style short, 

 thick. Berry 1-4- seeded, the flesh thin, not edible. About 10 species, natives of 

 Eastern N. Am. and Asia. Besides the following, another occurs in Tex. 



i. Parthenocissus quinquefolia (L.) Planch. VIRGINIA CREEPER. FALSE 

 GRAPE. AMERICAN IVY. (I. F. f. 2410.) Tendrils usually numerous, and pro- 

 vided with terminal adhering expansions, the vine sometimes supported also by 

 aerial roots; leaflets oval, elliptic, or oblong-lanceolate, 5-15 cm. long, narrowed 

 at the base, coarsely toothed, at least above the middle, glabrous or somewhat 

 pubescent; panicles ample, erect or spreading in fruit; berries blue, about 1.2 cm. 

 in diameter, usually 2-3-seeded; peduncles and pedicels red. In woods and thick- 

 ets, Quebec to Manitoba, Cuba, Tex. and Mex. July. Fruit ripe in October. 



Parthenocissus quinquefolia laciniata Planch. Tendrils mostly without terminal 

 adhering disks, the vine not high-climbing ; leaves more deeply and sharply toothed ; 

 fruiting panicles drooping. Ohio to Iowa, Kans. and Colo. 



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 or sometimes 3-divided ; k is freely planted for ornament. 



Order 22. MALVALES. 



Herbs, shrubs or trees, with simple, mostly alternate leaves. Flowers 

 regular, usually perfect. Sepals separate, or more or less united, valvate. 

 Petals separate, very rarely wanting. Stamens usually very numerous. 

 Ovary superior, compound, the placentae united in its axis. Disk 

 inconspicuous or none. 



Stamens in several sets ; anthers 2-celled ; embryo straight. Fam. i. Tiliaceae. 



Stamens monadelphous ; anthers i-celled; embryo curved. Fam. 2. Malvaceae. 



Family i. TILlACEAE Juss. 



Linden Family. 



Trees, shrubs or rarely herbs, with alternate (rarely opposite) simple 

 leaves, mostly small and deciduous stipules, and generally cymose or 

 paniculate flowers. Sepals 5, rarely 3 or 4, valvate, deciduous. Petals of 

 the same number, or fewer, or none, mostly imbricated in the bud. 

 Stamens oo , mostly 5-io-adelphous. Ovary i, sessile, 2-io-celled ; 

 ovules anatropous. Fruit i-io-celled, drupaceous or baccate. Coty- 

 ledons ovate or orbicular; endosperm fleshy, rarely wanting. About 35 

 genera and 245 species, widely distributed. 



i. TILIA L. 



Trees, with serrate cordate mainly inequilateral leaves, and cymose white or 

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

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

 base. Stamens oo ; 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, indehiscent, l-2-seeded. Seeds ascending ; endo- 

 sperm hard; cotyledons broad, 5-lobed, corrugated. [The ancient Latin name.] 

 About 12 species, natives of the north temperate zone, i in the mountains of Mex. 



