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Key K: holoparasites and holomycotrophs

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1 Stems thin, flexible, twining, yellow to bright orange; plants parasitic on the stems of other vascular plants via above-ground haustoria.
..2 Inflorescence a spike; flowers 3-merous (sepals 6, petals 0, stamens 9, carpel 1); fruit a 1-seeded fleshy drupe; fresh plants aromatic; [Basal Angiosperms]; [peninsular FL only]
..2 Inflorescence a cymose cluster; flowers 4-5-merous (sepals 4-5, petals 4-5, stamens 4-5, carpels 2 and fused); fruit a 1-4-seeded dry capsule; fresh plants not aromatic; [Eudicots]; [widespread]
1 Stems erect, stiff, straight, variously colored (tan, red, violet, brown, white, pink); plants mycotrophic (or indirectly parasitic via a fungal intermediary), attached to fungi underground.
....3 Flowers radially symmetrical.
......4 Scale leaves alternate (spiral); [collectively widespread]
......4 Scale leaves opposite; [s. FL only]
....3 Flowers bilaterally symmetrical.
........5 Petals 3, separate; stamen 1; capsule 1-locular, pendent when mature, opening by 3 slits; [Monocots]
........5 Petals fused into a tube, with 4-5 lobes; stamens 4; capsule 2-locular, ascending or spreading when mature, opening by 2 valves; [Eudicots]
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