29a. Leaf-segments broadly ovate (8-15 dm. high) =Angelica, Angelica atropurpurea.= 29b. Leaf-segments lanceolate (8-15 dm. high) =Water Hemlock, Cicuta maculata.= 29c. Leaf-segments linear (4-10 dm. high) =Water Hemlock, Cicuta bulbifera.= 30a. Principal branches of the umbel 2-5; fruit linear-oblong; woodland plants blooming in spring (2-4 dm. high) =Chervil, Chaerophyllum procumbens.= 30b. Principal branches of the umbel 7 or more; fruit ovate to broadly elliptical (summer) --31. 31a. Native plants, growing in swamps (5-15 dm. high) =Hemlock Parsley, Conioselinum chinense.= 31b. Introduced plants, in waste places and along roads --32. 32a. Stems conspicuously spotted with purple (5-15 dm. high) =Poison Hemlock, Conium maculatum.= 32b. Stems not spotted with purple (2-5 dm. high) =Caraway, Carum carvi.= CORNACEAE, the Dogwood Family Trees, shrubs, or herbs, with alternate leaves and small flowers in rather crowded rounded or flattened clusters; sepals 4, minute; petals and stamens each 4; ovary inferior, ripening into a berry. In one genus the flowers are minute and greenish, with 5 sepals and petals minute or none. 1a. Leaves alternate --2. 1b. Leaves opposite --3. 2a. Flowers white, conspicuous, in flattened clusters (shrubs 2-4 m. high; flowers in late spring) =Dogwood, Cornus alternifolia.= 2b. Flowers greenish, inconspicuous, in small axillary clusters (tree; flowers in spring) =Sour Gum, Nyssa sylvatica.= 3a. Flower clusters small and dense, surrounded by a showy involucre of 4 bracts, resembling a corolla of 4 petals --4. 3b. Flowers in open flattened clusters, without petal-like involucre (shrubs 1-4 m. high; late spring) --5. 4a. Herbaceous, 3 dm. high or less (flowers in late spring) =Dwarf Dogwood, Cornus canadensis.= 4b. Tall shrub or tree (flowers in late spring) =Flowering Dogwood, Cornus florida.= 5a. Leaves distinctly pubescent beneath with woolly or spreading hairs --6. 5b. Leaves smooth beneath, or pubescent with short appressed hairs --9. 6a. Leaves rough above; fruit white =Dogwood, Cornus asperifolia.= 6b. Leaves smooth or finely soft-hairy above --7. 7a. Leaves at least twice as long as wide; branches brownish or purplish --8. 7b. Leaves less than twice as long as wide; branches greenish; fruit blue =Dogwood, Cornus circinata.= 8a. Branches purplish; fruit blue =Dogwood, Cornus amomum.=