14b. Leaflets linear to oblong, serrate to nearly entire, not incised (6-15 dm. high) --15. 15a. Leaflets entire, or with a few low remote teeth =Cowbane, Oxypolis rigidior.= 15b. Leaflets finely but sharply serrate =Water Parsnip, Sium cicutaefolium.= 16a. Leaves principally basal, decompound; flowers in early spring (1-2 dm. high) =Harbinger of Spring, Erigenia bulbosa.= 16b. Leaves principally on the stem --17. 17a. Leaves palmately or ternately once-compound --18. 17b. Leaves 2-3 times compound or decompound --24. 18a. Flowers short-pedicelled, crowded in head-like umbels, greenish; ovary bristly (4-9 dm. high; early summer) (Black Snakeroot) --19. 18b. Flowers in open umbels, white --22. 19a. Styles short, not projecting beyond the bristles of the mature fruit --20. 19b. Styles long, projecting beyond the bristles of the fruit, and recurved --21. 20a. Staminate flowers on pedicels 3-4 mm. long, equaling or barely exceeding the fruit =Black Snakeroot, Sanicula trifoliata.= 20b. Staminate flowers short-pedicelled, concealed among the fruits =Black Snakeroot, Sanicula canadensis.= 21a. Fruit short-stalked, 4 mm. long or less =Black Snakeroot, Sanicula gregaria.= 21b. Fruit sessile, 6-7 mm. long =Black Snakeroot, Sanicula marilandica.= 22a. Umbel unsymmetrical, its branches irregular in length; plant slender (3-8 dm. tall; early summer) =Honewort, Cryptotaenia canadensis.= 22b. Umbel symmetrical with regular branches; plants tall and stout --23. 23a. Stem and leaves very pubescent (10-25 dm. high; summer) =Cow Parsnip, Heracleum lanatum.= 23b. Stem and leaves glabrous or nearly so (5-15 dm. high; early summer) =Masterwort, Imperatoria ostruthium.= 24a. Ovary and fruit bristly (4-10 dm. high) --25. 24b. Ovary and fruit smooth or winged, never bristly --27. 25a. Umbels loose, open, few-flowered; woodland plants blooming in spring (Sweet Cicely) --26. 25b. Umbels densely flowered; weedy plants blooming from summer to fall =Wild Carrot, Daucus carota.= 26a. Stem villous-pubescent =Sweet Cicely, Osmorhiza claytoni.= 26b. Stem glabrous except at the joints =Sweet Cicely, Osmorhiza longistylis.= 27a. Leaflets merely serrate (flowers in summer) --28. 27b. Leaflets coarsely incised, so that the leaf appears dissected --30. 28a. Umbel densely pubescent (8-15 dm. high) =Angelica, Angelica villosa.= 28b. Umbel smooth --29.