CLIMBERS. 39 
Simple. 
. Leaves neither toothed, angled, nor lobed. 14. 
Leaves crenate or finely toothed. 15. 
Leaves rounded or angular or short-lobed. Menispermum. 
Leaves, or many of them, deeply or hastately lobed. 18. 
. Leaves very large, cordate. Aristolochia. 
Leaves moderate: stem slender. Cocculus. 
. Pith excavated or chambered. Actinidia. 
Pith continuous. 16, 
. Fruit opening: seeds with red aril. Celastrus. 
Fruit indehiscent. 17. 
. Leaves large (8-12 cm. long), Actinidia. 
Leaves smaller (scarcely 6 cm.). Berchemia. 
. Lower lobes nearly separated. Solanum. 
Lower lobes not severed from the rest. 19. 
. Leaves thin, with deep sinuses. ~ Calycocarpum. 
Leaves firm, hastate or unlobed. Cocculus. 
. Tendrils few, without suckers: fruit cluster forked. 21. 
Tendrils abundant. 22. 
. Leaves thin, broadly ovate. Ampelopsis. 
Leaves rather fleshy, Cissus. 
. Fruit in open forked clusters. Parthenocissus. 
Fruit in pyramidal clusters. Vitis. 
; Compound. 
. POISONOUS. With aerial roots but no tendrils, 
or scrambling, Rhus (Toxicodendron). 
With tendrils, and sometimes also aerial roots. 24. 
Twining. 26. 
. Leaves once compound. 25. 
Leaves bipinnate. Ampelopsis. 
. Leaves thin. Parthenocissus. 
Leaves fleshy, Cissus. 
. Leaflets 3 or 5, digitate or nearly so. 27. 
Leaflets more than’s, clearly pinnate. Wisteria. 
. Leaflets 5, elongated. Akebia. 
Leaflets 3, large and broad. Pueraria. 
