=x.= Leaves entire. (=z.=) =x.= Leaves serrate or dentate, ovate or oval. (=y.=) =y.= Fruit rounded drupes in large clusters, with single flattened stones 47. _Viburnum._ =y.= Fruit lobed pods, which burst open in the autumn; branchlets somewhat 4-sided 19. _Euonymus._ =z.= Leaves small, lanceolate; flowers and fruit large and beautiful 42. _Punica._ =z.= Leaves broad, thin, with curved parallel veins or ribs. 45. _Cornus._ =z.= Leaves large, broad, oval, without either curved or straight parallel ribs 63. _Chionanthus._ =AA.= Leaves entire and covered on both sides with silvery, peltate scales 72. _Shepherdia._ =AA.= Leaves ovate, small, minutely serrate 20. _Rhamnus._ =BB.= Leaves large, 18 in. or more long; leaflets 11 or more, very finely serrated 14. _Phellodendron._ =BB.= Leaves smaller; leaflets entire or quite evenly toothed, usually over 5 in number 60. _Fraxinus._ =BB.= Leaflets coarsely and quite irregularly toothed, 3-5 (rarely 7) in number 26. _Negundo._ =CC.= Leaflets slender-lanceolate, almost entire; shrub or small tree, 5-10 ft. high 67. _Vitex._ =CC.= Leaflets broader and serrate; usually large trees. 23. _Æsculus._ =DD.= Leaves with radiating ribs. (=FF.=) =DD.= Leaves with feather-veining. (=EE.=) =EE.= Leaves 2-6 in. long; flowers small, in large, dense, terminal clusters 62. _Syringa._ =EE.= Leaves 1-4 in. long; flowers in pairs 48. _Lonicera._ =FF.= Leaves large, 6 in. or more long; two almost hidden buds, one above the other, in the axils of the leaves on the rapid-growing branches; flowers large, purple, blooming in early spring; fruit rounded pods 64. _Paulownia._ =FF.= Leaves large, 6 in. or more long; flowers large, white, blooming in June; fruit long pods 65. _Catalpa._ =FF.= Leaves 2-4 in. long, with red stems 3. _Cercidiphyllum._ =GG.= Leaves scattered singly over the stem, not in bundles or clusters. (=JJ.=) =GG.= Leaves in large or small clusters. (=HH.=) =HH.= Clusters in whorls of many leaves around the stem like an umbrella 100. _Sciadopitys._ =HH.= Leaves clustered in bundles of 2-6 93. _Pinus._ =HH.= Leaves clustered in bundles of over 8. (=II.=) =II.= Leaves deciduous, soft 97. _Larix._ =II.= Leaves evergreen, rigid 98. _Cedrus._