Smooth herbs, with alternate simple leaves and showy flowers; one petal-like sepal prolonged into a spur; fruit explosive when ripe (5-10 dm. high; summer). 1a. Flowers pale-yellow, with a few red-brown spots =Touch-me-not, Impatiens pallida.= 1b. Flowers orange, thickly spotted with red-brown =Touch-me-not, Impatiens biflora.= RHAMNACEAE, the Buckthorn Family Shrubs, with simple leaves and small flowers in axillary or terminal clusters in early summer; sepals, petals, and stamens each 4 to 5, or petals none. 1a. Leaves with a single mid-vein; flowers in axillary clusters, greenish (Buckthorn) --2. 1b. Leaves with 3-5 principal veins; flowers in dense terminal clusters, white (Red-root) --3. 2a. Lateral veins 3-4 pairs (stout shrub, frequently thorny, escaped from cultivation) =Buckthorn, Rhamnus cathartica.= 2b. Lateral veins 6-9 pairs (1 m. high or less; in swamps and bogs) =Buckthorn, Rhamnus alnifolia.= 3a. Leaves ovate, rounded or cordate at the base, 2-5 cm. wide or more (4-8 dm. high) =Red-root, Ceanothus americanus.= 3b. Leaves elliptical-lanceolate, 2 cm. wide or less (3-8 dm. high) =Red-root, Ceanothus ovatus.= VITACEAE, the Grape Family Shrubs, climbing by tendrils or hold-fast roots, with palmately lobed or palmately compound leaves and small greenish flowers in panicles or flattened clusters; petals and sepals each 4 or 5; fruit a berry. 1a. Leaves compound (summer) (Virginia Creeper) --2. 1b. Leaves simple (late spring) (Grape) --4. 2a. Branches of the tendrils chiefly ending in adhesive disks --3. 2b. Branches of the tendrils twining, or rarely with a few disks =Virginia Creeper, Psedera vitacea.= 3a. Stem and foliage glabrous =Virginia Creeper, Psedera quinquefolia.= 3b. Stem and foliage pubescent, at least when young =Virginia Creeper, Psedera quinquefolia var. hirsuta.= 4a. Leaves conspicuously pubescent beneath --5. 4b. Leaves glabrous beneath when mature, or pubescent on the veins only --6. 5a. A tendril or flower-cluster opposite each leaf =Fox Grape, Vitis labrusca.= 5b. No tendril opposite each third leaf =Summer Grape, Vitis aestivalis.= 6a. Pith continuous through the joints of the stem =Fox Grape, Vitis rotundifolia.= 6b. Pith interrupted by the solid joints --7. 7a. Leaf-lobes with rounded angles between them =Summer Grape, Vitis bicolor.= 7b. Leaf-lobes with sharp angles between them --8.