408 



VITACEAE. 



[VOL. II. 



separate or coherent, valvate, caducous. Stamens 4-5, opposite the petals; fila- 

 ments subulate, inserted at the base of the disk or between its lobes; disk some- 

 times obsolete or wanting; anthers 2-celled. Ovary i, generally immersed in 

 the disk, 2-6-celled; ovules 1-2 in each cavity, ascending, anatropous. Fruit 

 a i-6-celled berry (commonly 2-celled). Seeds erect; testa bony; raphe gener- 

 ally distinct; endosperm cartilaginous; embryo short. 

 About 10 genera and 450 species, widely distributed. 



Hypogynous disk present, annular or cup-shaped, lobed or glandular; leaves not digitately com- 

 pound in our species. 



Petals united into a cap, falling away without separating. i. Vitis. 



Petals separate, spreading. 2. Ampelopsis. 



Hypogynous disk obsolete or wanting; leaves digitately compound in our species, the leaflets 5-7. 



3. Parthenocissus. 



i. VITIS L. Sp. PI. 202. 1753. 



Climbing or trailing woody vines, rarely shrubby, mostly with tendrils. Leaves simple, 

 usually palmately lobed or dentate. Stipules mainly small, caducous. Flowers mostly 

 dioecious, or polygamo-dioecious, rarely perfect. Petals hypogynous or perigynous, coher- 

 ent in a cap and deciduous without expanding. Ovary 2-celled, rarely 3~4-celled; style 

 very short, conic; ovules 2 in each cavity. Berry globose or ovoid, few-seeded, pulpy, 

 edible in most species. [The ancient Latin name.] 



About 40 species, natives of warm and temperate regions. In addition to the following, some 

 10 or 15 others occur in the southern and western United States. 



leaves woolly beneath. 



Pubescence rusty-brown; berries large, musky. 

 Pubescence at length whitish; berries small, black, not musky. 

 Berries with bloom: branches terete. 

 Berries without bloom; branches angular. 

 Leaves glabratc, sometimes slightly pubescent when young. 

 Leaves bluish -white glaucous beneath. 

 Leaves not glaucous beneath. 



Leaves 3-7-lobed; lobes acute or acuminate. 



Lobes and sinuses acute; berries with bloom. 

 Lobes long-acuminate; sinuses rounded; berries without bloom. 

 Leaves sharply dentate, scarcely lobed. 



Bark loose; pith interrupted by the solid nodes. 

 Hi^h-climbing; leaves large; berries sour. 



Leaves somewhat shining above, the apex long-acuminate; inflorescence loose. 



7. y. cordifolta. 

 Leaves dull, the apex short-acuminate or blunt; inflorescence compact. 



8. /'. naileyana. 

 Low ; leaves small ; berries sweet. 9. / ". rupestris. 



Bark close; pith continuous through the nodes. 10. V, rotundi/olia. 



i. /". Labrtisca. 



V. aestiralis. 

 I '. itntrea. 



.}. /'. bicolor. 



I '. -'ulpina. 

 V. pa I mala. 



i. Vitis Labrusca I,. Northern 



Fox- or Plum-grape. Wild Vine. 



(Fig. 2398.) 



Vitis Labrusca L. Sp. PI. 203. 1753. 



Climbing or trailing, often ascending high 

 trees, sometimes forming a stem a foot in 

 diameter or more, the young twigs, forked 

 tendrils, petioles and lower surfaces of the 

 leaves densely rusty-pubescent, especially 

 when young. Bark loose and separating in 

 strips; nodes solid, interrupting the pith; 

 leaves large, each opposite a tendril or a 

 flower cluster, varying from merely dentate 

 to deeply lobed with rounded sinuses; fertile 

 flowers in compact panicles, the sterile looser; 

 berries few, brownish-purple, about 9" in 

 diameter, strongly musky; seeds 3-6, about 

 4 X/ long; raphe narrow. 



Thickets, New England to Minnesota, Georgia 

 and Tennessee. The cultivated Isabella, Con- 

 cord and Catawba grapes have been derived from 

 this species. Ascends to 2100 ft. in Virginia. 

 May-June. Fruit ripe Aug.-Sept. 



