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Perennial herbs with tunicated bulbs. Roots fibrous. Leaves basal, linear, terete or flat, perennial or annual. Inflorescence scapose; spathe tubular, usually notched at apex, funnel-shaped, erect or suberect. Flower bisexual, regular, pedicellate, solitary. Perianth segments free or fused into tube with 6 equal lobes. Stamens 6, attached to perianth lobes, equal or in 2 series; anthers dorsifixed, versatile, dehiscing by slits, introrse. Ovary inferior, trilocular; ovules few to many per locule; style filiform; stigma trilobed or trifid. Fruit a loculicidal capsule. Seeds few to many, flat, D-shaped, black.
Delicate, glabrous, acaulescent herbs arising from underground bulbs; leaves linear, contemporary with the flower; scape 1-flowered, consisting of an elongate peduncle bearing terminally a 1-valved spathe from which arises the solitary pedicel; perianth funnel-shaped with a short tube and subequal lobes, stamens 6, glabrous; filaments filiform, inserted in the throat or at the base of the perianth tube; anthers linear, versatile, attached below the middle; style slender, from 2 as long to almost as long as the perianth; stigma trifid or trilobed; capsule ovate, 3-valved, many seeded.
Herbs perennial, bulbiferous. Bulbs covered with a tunic. Leaves several, fascicled, linear. Flowering stem slender, hollow. Involucre 1, basally tubular, apically 2-notched. Flower solitary, terminal, erect. Perianth funnelform; tube short or long; lobes 6, subequal. Stamens 6, 3 long alternating with 3 short, inserted at throat or in tube of perianth; filament erect to slightly declinate; anther dorsifixed. Ovary with many ovules. Stigma 3-lobed or 3-notched. Fruit a capsule, subglobose, 3-valved, loculicidal. Seeds black, slightly flattened.
Perianth tubular at base, with 6 broad, curved-ascending or spreading segments; filaments elongate, inserted on the throat of the perianth; corona none; ovary inferior, with numerous ovules in each of the 3 locules; seeds flat; perennial herbs from a coated bulb, with several flat, linear, basal lvs and a hollow scape bearing a single large erect fl on a short peduncle subtended by scarious bracts. 35, warm Amer.
