758 VITACEAE 



recurved pedicels : seeds solitary or sometimes 2, obovoid, 6-7 mm. long, pointed at the 

 base. 



On sandy shores, Florida to Texas and Arkansas. 



4. AMPELOPSIS Michx. 

 Bushy or climbing vines, with few tendrils and firm tissues. Leaves alternate : blades 

 simple and toothed, or lobed, or bipinnately compound. Flowers mostly perfect, in flat 

 cymes. Floral envelopes mostly in 5's. Calyx pedicelled. Petals distinct, expanding. 

 Disk entire or merely crenulate-undulate. Stamens exserted. Ovary 2-celled, adnate at 

 the base to the disk. Style slender. Ovules 2 in each cavity. Berries with scant pulp 

 or nearly dry, inedible. Seeds^2-4, somewhat 3-angled. 



Leaf-blades simple : ovary not surpassing the disk but nearly free from it. 1. A. cordata. 



Leaf-blades bipinnate : ovary surpassing the disk, the latter mostly adnate to it. 2. A. arborea. 



1. Ampelopsis cordata Michx. A high climbing vine, with forking tendrils and a 

 warty bark. Leaf-blades simple, ovate or triangular-ovate, 4-12 cm. long, acuminate, shal- 

 lowly, but acutely, serrate, glabrous or sparingly pubescent about the nerves and their axils 

 beneath, truncate or subcordate at the base ; petioles shorter than the blades, often pubes- 

 cent : cymes slender-peduncled, 3-8 cm. broad : disk cup-shaped, as high as the ovarv but 

 nearly free from it : style slender : berries subglobose, 6-8 mm. in diameter, insipid, 

 bluish or greenish blue: seeds 1-3, about 5 mm. in diameter, nearly as broad as long, 

 granular, the raphe indistinct. \^Cissus Ampelopsis Pers.] 



On river banks and in woods, Virginia to Ohio and Illinois, Florida, Texas and Mexico. Spring; 

 fruit ripening in summer and fall. 



2. Ampelopsis arborea (L. ) Eusby. A stout climber, with few forking tendrils, the 

 stems sometimes very long. Leaf-bladesbipinnate, 1-2 dm. long, petioled : leaflets several 

 or many, the blades ovate, often broadly so or cuneate-obovate, 1-3 cm. long, acute or 

 acuminate, coarsely toothed, incised or lobed, glabrous or sparingly pubescent, sessile : 

 cymes long-peduncled but shorter than the leaves : disk surpassed by the ovary, mainly 

 adnate to it : styles conic-subulate : berries subglobose, 10-13 mm. in diameter, dark purple : 

 seeds 2-4, 4.5-5 mm. long, granular, each with a conspicuous raphe. [Cissus bipinnata 

 (Michx.) Nutt.] 



Tn low places or swamps, Virginia to Missouri, Florida and Texas. Also in the West Indies and 

 Mexico. Spring to fall ; fruit ripening in the fall. Pepper-vine. 



5. PARTHENOCISSUS Planch. 

 Trailing or climbing vines, with forking tendrils, whose tips often bear adhering disks, 

 or are merely coiling. Leaves alternate : blades digitately 5-7-foliolate : leaflets entire or 

 toothed. Flowers perfect or polygamo-monoecious, in compound cymes. Calyx pedi- 

 celled. Petals 5, expanding, often fugacious. Disk obsolete or wanting. Stamens 5. 

 Ovary 2-celled, sessile : style stout. Ovules 2 in each cavity. Berries with scant pulp, in- 

 edible. Seeds 3-angled. Virginia Creeper. American Ivy. 



Foliage pubescent, usually densely so. 1- -P- hirsuins. 

 Foliage glabrous. 



Leaf-blades 5-6-foliolate : Alleghenian and campestrian species. 



Tendrils with disks: leaf-blades with appressed, at least not flaring, teeth. 2. P. qtanquefolia. 



Tendrils without disks : leaf-blades with flaring teeth. 3. P. lacimata. 



Leaf-blades 7-foliolate : Texan species. 4. P hcptaphylla. 



1. Parthenocissus hirsiitus (Donn.) Small. A spreading vine, with pubescent twigs, 

 leaves and inflorescence, and slender tendrils, the stems trailing. Leaflets 5, the blades 

 oval, elliptic, oblong or ovate, acute or short-acuminate, coarsely toothed above the middle, 

 all except the terminal one, inequilateral : corymbs 8-12 cm. broad : berries subglobose, 

 dark blue, with a slight bloom, slightly pulpy :. seeds 5 mm. long, glossy, notched at the 

 top, with a conspicuous spatulate raphe. \_Ampehpsis hirsidus Donn.] 



In rocky places, Georgia to Texas and Mexico. Spring ; fruit ripening in August and September, 



2. Parthenocissus quinquefolia (L.) Planch. A high-climbing or sometimes trail- 

 ing vine, with stout tendrils wliich adhere by disks. Leaflets 5, the blades usually tliin- 

 nish, oval, elliptic or oblong, the lateral ones inequilateral, coarsely serrate above the 

 middle with rather appressed or at least not flaring teeth, short-petioluled : corymbs 8-12 

 cm. broad : berries subglobose, 8-9 mm. in diameter, deep blue with a scant bloom, often 

 quite pulpy : seeds 4-4.5 mm. long, prominently rugose, rather dull, each with an orbicular 

 raphe. [Ampelopsis quinquefolia (L. ) Michx.] 



In woods and on banks, Quebec to Manitoba, Florida and Texas. Spring ; fruit ripening in the fall. 



