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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 Monotropa

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1 Flowers few to many per stalk, racemose; stem pubescent, at least in the inflorescence; plant yellow, orange, or red when fresh, aging or drying dark brown
1 Flower solitary and terminal on the stalk; stem glabrous; plant white, pink, yellow, orange, or salmon when fresh, aging or drying black.
  2 Flowers and stems orangish-yellow; nectaries upturned towards the flower opening; interior surface of flower segments densely pubescent (the margins of the segments strongly ciliate); stamen filaments strongly decreasing in diameter upwards
  2 Flowers and stems white or pale pink; nectaries downturned away from the flower opening; interior surface of flower segments glabrous (the margins of the segments sparingly ciliate); stamen filaments nearly isodiametric from base to summit
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