Common Onion-orchid

Common Onion-orchid
Photographer
Kaye McRae
Common Name
Common Onion-orchid
Scientific Name
Microtis unifolia
Size
90cm
Leaf Description
Single erect hollow leaf to 28cm, erect or drooping, sheathing the flower stem.
General Description
To 90cm high. 6-100 tiny yellow-green flowers, in a dense spike, are on the end of large ovaries. The labellum tip is shallowly notched and the margins wrinkled. Flower spike is sheathed by a hollow onion-like leaf to 28cm long and each flower spike emerges well below the tip. Very common and widespread forming large colonies. Colonises lawns and disturbed areas.
Flower Description
Dense spike of 6-100 shortly staked erect flowers, to 4mm across. Dorsal sepal hooded with a blunt tip, doral sepals spreading and curled under. Labellum displays wrinkled margins and 2 basal calli and a central callus band.
Flower Colour
Yellow-green
Flowering Months
January
October
November
December
Habitat
Widespread, favouring swamps in heaths, dry forests, grassy wetland, red gum woodland.
Date of Last Record
2000-2015
Growing Conditions
Moist or dry soils from depressions to slopes of foothills. Full sun, semi shade. Fires stimulate mass flowering.