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Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Key to Valeriana

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1 Basal leaves pinnately divided into 11-21 segments; stem leaves divided into 11-21 segments; [exotic, grown as an ornamental and casually escaped]
1 Basal leaves simple or with 2 smaller basal lobes; stem leaves 1-7-lobed or divided into 3-11 (-15) segments; [native].
  2 Scandent herbaceous vine; stem leaves divided into 3 segments; corolla tube 0.5-2 mm long; [FL]
  2 Upright herb; stem leaves pinnately divided into 3-11 (-15) or 1-7-pinnately lobed; corolla tube 2.7-16 mm long; [n. VA, WV, TN, n. AL, s. IL northwards].
    3 Corolla tube 12-16 mm long; stem leaves pinnately divided into 3-7 segments; [moist rich sites, VA, WV, n. AL, s. IL northwards]
    3 Corolla tube 1.5-6 mm long; stem leaves either 1-7-pinnately lobed or divided into 5-11 (-15) segments; [wetlands, OH northwards].
      4 Rachis of stem leaves broadly winged (the wing broader than the lateral lobes), with 1-7 pinnate lobes; leaf margins densely white-ciliate (giving the leaf a white-margined appearance); corolla tubes 2.7-4 mm long; plant from a taproot
      4 Rachis of stem leaves unwinged, with 5-11 (-15) leaflets; leaf margin glabrous or sparsely ciliate with contorted hairs; corolla tubes (3.5-) 4-6 mm long; plant from a stout branched rhizome or caudex
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