Spring Ladies' Tresses (Spiranthes vernalis)
Part of the Florida's Native and Naturalized Orchids Website
Classification:Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular Plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Liliidae - Subclass containing lily and orchid relatives
Order: Orchidales - Orchid order
Family: Orchidaceae - Orchid Family
Subfamily: Spiranthoideae - Spiranthoids
Tribe: Cranichideae - Cranichids
Subtribe: Spiranthinae - Spiranthines
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Distribution Map: |
Description: Summary: Small-medium sized perennial herbs with a basal clump of grasslike leaves. Spikes with many small, white flowers arranged in variously tight spirals. Dorsal sepal and petals clasp in a hood over the lip, which often shows a pair of brown dots when it ages. Lateral sepals spread widely. May be distinguished from the look-alike S. laciniata by the blooming season and by the fact that the downy hairs on the flowering stem terminate in a sharp point (as opposed to ball-tipped hairs in S. laciniata). Common Name: Spring Ladies' Tresses Habitat: open, grassy areas; fields; wet ditches Flowering season: March through June (peaking in May) |
Images:
Description:
This is one of the most common orchids in Florida, being found in nearly every county in the state. In fact, those few gaps showing in the distribution map represent counties where official herbarium collections have not been made, but most likely harbor specimens of this species as well. It also inhabits a variety of habitats, from dry meadows to wet ditches. It seems the only requirement for this species is that the area be reasonably open and free from competing vegetation.
The leaves are grass-like and wilt soon after flowering is over. New leaves emerge in fall and last through the winter, being surprisingly frost-resistant. The flowering stem emerges from the center of this rosette of leaves to bloom in mid-late spring. The delicate spiral of flowers ascending the spike reminded early settlers of the braids of a woman's hair, giving rise to the common name of Ladies Tresses.
There is a look-alike species to this one, Spiranthes laciniata. S. vernalis blooms much earlier and also has sharply tipped hairs on the flowering spike (you need a strong hand-lens to see this) as opposed to ball-tipped hairs on S. laciniata.
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