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Key to Aletris

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1 Perianth golden yellow (often faded in dried specimens).
  2 Perianth 1-2× as long as broad, the perianth lobes erect or incurved; [flowering late Apr-Jul]
  2 Perianth 2.5-4× as long as broad, the perianth lobes spreading somewhat; [flowering Mar-May]
1 Perianth white to creamy-white (rarely pinkish).
    3 Perianth 4-6 mm long, campanulate at anthesis, ca. 1× as long as broad, the perianth lobes broadly deltoid (about as long as broad); fruiting perianth somewhat narrowed above the base
    3 Perianth 6-10 mm long, cylindric at anthesis, 2-3× as long as broad, the perianth lobes narrowly deltoid (longer than broad); fruiting perianth markedly constricted above the middle
      4 Capsule conical, gradually tapered to beak; leaves gray-green; perianth moderately granular; [s. peninsular FL]
      4 Capsule ovoid, abruptly beaked; leaves yellow-green; perianth densely granular; [n. FL northwards]