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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 Polanisia

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1 Leaflets 5-20-(-30) mm wide; styles 5-7 mm long, deciduous in fruit; gynophores 0.2 mm long; nectaries bright orange, not conspicuous in fruit; petals white, pink, rose, or purple.
  2 Larger petals 3.5-6.5 (-8) mm long; stamens (4-) 7-10 (-14) mm long; [northeastern US and se. Canada south to VA, TN, AR, and e. OK]
  2 Larger petals (6-) 8-14 (-17) mm long; stamens (6-) 7-30 (-40) mm long; [collectively IL, WI, sc. Canada, MT, ID, OR south to LA, TX, NM, AZ, and Mexico; scattered elsewhere as waifs].
    3 Stamens (6-) 7-17 mm long; leaflets rounded at the tip; inflorescence bracts ovate to orbiculate; [s. TX]
    3 Stamens (6-) 12-30 (-40) mm long; leaflets acute to obtuse at the tip; inflorescence bracts lanceolate to ovate; [IL, WI, sc. Canada, MT, ID, OR south to LA, TX, NM, AZ, and Mexico; scattered elsewhere as waifs].
1 Leaflets 0.5-2 mm wide; styles 2.5-4.5 mm long, persistent in fruit; gynophores 1.7-14 mm long; nectaries yellow, drying purple, 0.5-5.5 mm long; petals white.
      4 Adaxial petals 6-11 mm long; nectary glands 1-5.5 mm long; gynophores 3-14 mm long.
        5 Nectary glands 1-2 mm long; gynopohores 3-6 mm long in fruit; adaxial petals 6-9 mm long; [extreme s. TX]
        5 Nectary glands (2.5-) 3.0-5.5 mm long; gynophores 7-14 mm long in fruit; adaxial petals 7-11 mm long; [sw. AR and OK south to c. LA, e, se., and s. TX]
      4 Adaxial petals 3-5 mm long; nectary glands 0.5-1 mm long; gynophores 1-4 mm long
          6 Capsules 8-30 mm long; seeds 1.8-2 mm long; [xeric sands; c. IL, WI and MN south to e. KS, e. OK, e. TX and westward to SD, NE, CO, and NM; rare as waif eastwards]
          6 Capsules 40-60 mm long; seeds 0.7-0.9 mm long; [xeric longleaf pine sandhills; e. GA to s. FL, west to s. MS]
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