Spiranthes odorata

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Spiranthes odorata
Spiranthes odorata.jpg

Secure (NatureServe)
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Cranichideae
Genus: Spiranthes
Species:
S. odorata
Binomial name
Spiranthes odorata
Nutt.

Spiranthes odorata, marsh lady's tresses[1] or common lady's tresses,[2] is a species of flowering plant in the orchid family, native to the southeastern United States, from Texas eastwards and northwards to Delaware.[1] It grows in moist, partially shaded environments with acidic or neutral soil.

An herbaceous perennial, this orchid grows up to 50 cm (20 in) tall and broad. The flowers are borne in dense vertical rows on sturdy green spikes, in a slightly twisted pattern (hence Spiranthes, "twisted flower"). This effect is due to uneven cell growth. The flowers, which appear in late summer and autumn, are white, hooded and fragrant (hence the specific epithet odorata).

This plant is pollinated by bumblebees, notably Bombus pensylvanicus, Bombus fervidus, Bombus impatiens, and Bombus nevadensis.[3]

In the UK, the cultivar ‘Chadd’s Ford’ has gained the Royal Horticultural Society’s Award of Garden Merit.[4][5] Requiring a fertile soil in partial shade, it is hardy down to −10 °C (14 °F), but in frosty areas needs a dry mulch during the winter months.

References[]

  1. ^ Jump up to: a b "Spiranthes odorata". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 27 November 2015.
  2. ^ "Spiranthes odorata". Missouri Botanical Garden. Retrieved 23 October 2019.
  3. ^ "Spiranthes odorata". Go Orchids. North American Orchid Conservation Center. Retrieved 24 October 2019.
  4. ^ "RHS Plantfinder - Spiranthes odorata 'Chadd's Ford'". Retrieved 16 November 2018.
  5. ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 99. Retrieved 16 November 2018.


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