Definition that contains genus spiranthes
- screw augur an orchid of the genus Spiranthes having tall erect densely flowered spiraling clusters of creamy white vanilla-scented flowers; widely distributed especially in low damp places of eastern and central North America
- spiranthes cernua an orchid of the genus Spiranthes having tall erect densely flowered spiraling clusters of creamy white vanilla-scented flowers; widely distributed especially in low damp places of eastern and central North America
- ladies' tresses an orchid of the genus Spiranthes having slender often twisted spikes of white flowers
- lady's tresses an orchid of the genus Spiranthes having slender often twisted spikes of white flowers