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Key to Hyacinthaceae

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1 Tepals united into a perianth tube longer than the free portion; [subfamily Hyacinthoideae, tribe Hyacintheae].
..2 Perianth tube <2 × as long as the lobes; corolla spreading and open at the mouth
..2 Perianth tube >2 × as long as the lobes; corolla contracted at the mouth
1 Tepals separate or fused only at the extreme base.
....3 Tepals white, with a greenish stripe on the outer surface, separate; bracts 0-1 per flower; [subfamily Ornithogaloideae]
......4 Bulb large, > 3 cm in diameter; leaves > 10 mm wide; tepals thick-textured, ± oblong, whitish or yellowish with distinct, broad, green to brown longitudinal band on adaxial surface associated with 3-5 medially aggregated veins
......4 Bulb to 3.5 cm in diameter; leaves 3-10 (-15 mm) wide; tepals usually ovate or lanceolate, thick- or thin-textured, unicolored or with narrow, indistinct green or brownish keel on adaxial surface not associated with medially aggregated veins
....3 Tepals blue (less commonly white or pink), separate or fused at the extreme base; bracts either 0-1 or 2 per flower; [subfamily Hyacinthoideae, tribe Hyacintheae].
........5 Bracts 2 subtending each flower
........5 Bracts 0-1 subtending each flower.
..........6 Tepals connate basally for more than 1/10 of their length; flowers directed upward
..........6 Tepals separate; flowers directed outward
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