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1 Leaves appearing before the flowers and withering before anthesis; leaves lanceolate to elliptic (the margins not parallel for most of the length), mostly > 2 cm wide; [subgenus Rhizirideum]. | |
1 Leaves present at flowering; leaves linear (the margins parallel for most of the length), mostly < 2 cm wide. | |
3 Leaves variously flattened or keeled (flat or V-shaped in cross section), not hollow. | |
8 Inflorescence of flowers only; leaves 0.5-4.5 cm wide. | |
8 Inflorescence of bulblets (and often flowers as well); leaves 0.2-4.5 cm wide. | |
11 Inflorescence nodding, the peduncle bent 30-150 degrees in its uppermost several cm (at least in bud – in A. stellatum becoming erect in flower or fruit). | |
13 Perianth campanulate to nearly rotate, pink, pale pink, or nearly white; sepals acute (obtuse in A. oxyphilum); [of moderate to low elevations in the Mountains, Piedmont, and Coastal Plain]. | |
14 Plants flowering late Aug-early Oct; tepals 6-9 mm long, pale pink to nearly white; leaves moderately to strongly keeled in cross section (the angle between the two lower flat faces generally 90-135 degrees), 4-12 mm wide; [of calcareous wet savannas of the outer Coastal Plain] | |
15 Pedicels relatively stout, 1.6-3 cm long; tepals pink or pale pink (sometimes nearly white); plants flowering Jun to early Aug; [widespread in our area, on moderately to strongly calcareous substrates] | |
16 Tepals light pink to medium pink, the outer and inner similarly disposed, widely ascending; leaves pale green, glaucous; [in rocky woodlands, bluffs, barrens, over calcareous or mafic substrates, more widespread in our region] | |
16 Tepals medium pink to dark pink, the outer 3 spreading, the inner 3 erect-ascending; leaves medium to dark green, not at all glaucous; [in seasonal seepage in calcareous glades, Interior Low Plateau and adjacent areas] | |
20 Stems 1.5-5.1 dm tall; stems 1.5-3.8 mm wide at 1 cm above the bulb; perianth white or very pale pink; capsules smaller, the seeds 1.8-2.0 and not dimpled; [of longleaf pine sandhills and other dry sandy Coastal Plain habitats and acid thin soils over granite in the eastern Piedmont from SC southwards] | |
21 Spathe bracts 3-7-veined. | |
22 Outer bulb coats membranous, not appearing as a reticulate mesh of persistent fibers; [s. and se. TX] | |
22 Outer bulb coats reticulate-fibrous, appearing as a mesh of persistent fibers; [collectively widespread]. | |
23 Perianth urceolate, continuing to surround the developing capsule; outer bulb coats of a very coarse, reticulate mesh; [s. TX] | |
23 Perianth spreading, withering as the capsule develops; outer bulb coats of a fine or moderately fine reticulate mesh; [collectively widespread] | |
24 Inflorescence entirely of normal flowers. | |
29 Umbels of 5-25 flowers; pedicels 3-4× as long as the flowering perianth; tepals thick | |
29 Umbels of >25 flowers; pedicels 2-5× as long as the flowering perianth; tepals thin | |