132 VITACEAE, 
pith not diaphragmed at the nodes; alternate leaf-scars; nar- 
row stipule-scars; small buds; simple or in one species pinnate 
or bipinnate scarcely fleshy leaves; small greenish perfect poly- 
petalous flowers in forking clusters opposite the leaves; and 
small pale blue or purple large-seeded berries. (Cissus), 
1. Leaves simple.” 2. 
Leaves pinnate or bipinnate. (Pepper vine). © A. arborea. 
2. Leaves whitened beneath. A. humulifolia. 
Leaves not whitened beneath. 3. 
3. Leaves serrate, little lobed: fruit scarcely showy. A. cordata. 
Leaves crenately toothed: fruit multicolored. 4. 
4. Leaves deeply lobed. (Turquoise berry). A. heterophylla. 
Leaves little lobed. . A. heterophylla amurensis. 
PARTHENOCISSUS. Virginia Creeper. “Ampelopsis”. 
Woody close-barked plants climbing by coiling or more fre- 
quently disk-bearing tendrils, with soft brownish wood with 
rather large scattered ducts and coarse medullary rays; sym- 
podial branches with green or pale continuous or finally cham- 
bered or excavated rounded pith not diaphragmed at the swol- 
len nodes; alternate rounded buds with mostly 2 or 4 exposed 
scales; half-round or round leaf-scars with about 10 bundle- 
traces in a ring; elongated stipule-scars; digitate 3- or 5- 
foliolate thin leaves, in one species fleshier and often with I 
leaflet and so appearing simple; small greenish perfect flowers 
in forking clusters opposite the leaves; and small purplish large- 
seeded berries. (Psedera). iat 
1. Tendrils long, rarely with suckers. : P. vitacea. 
Tendrils with abundant suckers. 2. 
2. Leaves compound, mostly of 5 leaflets. 3. 
Leaves appearing simple, or of 3 broad firm leaflets. 
(Boston ivy). P. tricuspidata. 
3. Glabrous: leaves pale beneath: tendrils long. (Virginia 
creeper ). P. quinquefolia. 
Pubescent: tendrils short. 4. 
4. Leaves whitened beneath. P. quinquefolia Engelmannii. 
Leaves green: with aerial roots. P. quinquefolia Saint Paulii. 
