A N F Keys
1 Leaves palmately compound with 5 leaflets; inflorescence a several-flowered cyme; petals ± 4 mm long and free .. Parthenocissus inserta [pics]
1' Leaves entire to palmately lobed; inflorescence a panicle of cymes; petals 2−2.5 mm long and fused above midpoint .. Vitis
1 Foliage densely white-woolly; blade unlobed to shallowly 3-lobed; androdioecious; berries 3.5−7 mm diameter, blackish purple, skin separating from pulp .. Vitis girdiana [pics]
1' Foliage initially tomentose-woolly aging glabrescent; blade 3-, 5-, or 7-lobed; with only bisexual flowers; berries 10+ mm diameter, purplish, skin adherent to pulp .. Vitis vinifera [pics]
The text of the above keys used with permission from
A Naturalist's Flora of the Santa Monica Mountains and Simi Hills, California
© Copyright
Barry A. Prigge and Arthur C. Gibson
2013