Flora of the Southeastern United States
2022 Edition


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Key to Doellingeria

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.

1 Inflorescence branches flexuous, bractless or with a few very small bracts; heads 3-40 (-67) per plant; cypselas glabrous; plants with stems solitary or several from a crown, to 11 dm tall; [plants of upland dry to submesic habitats, typically glades, barrens, and dry to dry-mesic woodlands]
1 Inflorescence branches stiff, with numerous and well-developed bracts; heads (3-) 20-300+ per plant; cypselas glabrous to densely strigose; plants with stems scattered from creeping rhizomes (forming clonal patches), to 20 dm tall; [plants of wetland to mesic habitats, such as bogs, fens, seeps, wet meadows].
..2 Disk flowers 4-13 (-20) per head; ray flowers 2-7 per head; leaves mostly (1.5-) 2-3 (-4)× as long as wide, stiff, revolute; midveins of the phyllaries enlarged and translucent towards the tip; cypselas sparsely to densely strigose; [of acid seepage in the Coastal Plain]
..2 Disk flowers (5-) 11-26 (-50) per head; ray flowers (2-) 5-14 (-16) per head; leaves (2-) 3.5-5 (-8)× as long as wide, flexible, planar; midveins of the phyllaries not swollen towards the tip; cypselas glabrous to sparsely strigose; [widespread in our area]