FANDOM


Spiranthes

Spiranthes lingua plate
Spiranthes aestivalis plate from
Flore Illustree de Nice et des Alpes-Maritimes, Iconographie des Orchidees

Scientific Classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Family:Orchidaceae
Subfamily: Orchidoideae
Tribe: Cranichideae
SubTribe: Spiranthinae
Alliance:
Genus: Spiranthes
L. C. Rich. 1817
Type Species
Spiranthes spiralis


Spiranthes, commonly called Ladies'-tresses, is a genus of orchids (family (Orchidaceae) belonging to the subfamily Orchidoideae.

DistributionEdit

It has a very wide, almost continuous distribution, mostly in temperate zones of the northern hemisphere: Europe, North Africa, Asia, Australia, New Guinea, the Americas and the Caribbean. It is a provincially endangered orchid, in North America it can be found in Manitoba, Ontario and more than 20 American states. They grow in meadows, fields and savannas but are also found in forests, both on acid and calcareous soil. Most species tend to become weeds in disturbed areas, while they may be scarce in undisturbed areas.

DescriptionEdit

Plants can grow to a height of 12 to 38 cm (4.5 to 15 inches). Spiranthes consists of perennial, terrestrial orchids with clustered, tuberous or rarely fibrous, fleshy roots. The leaves are basal or occasionally cauline (i.e. emerging from the stem). They are variable in shape. They range from broadly ovate to elliptic, or absent at flowering.

The flowering stem has foliaceous sheaths. The stem is erect and spiraling (as the name Spiranthes indicates). It carries persistent, sheathing bracts. The resupinate, tubular flowers are arranged in a more or less spirally twisted, showy or inconspicuous terminal spike. Their color is typically a shade of white or yellowish-white or even pink ( as in Spiranthes sinensis). Flowers are pollinated by bumble bees and butterflies.

This genus has undergone many taxonomic changes : originally Spiranthes contained all the species from the subtribe Spiranthinae. In 1920 Schlechter divided this genus in 24 genera. A revision by Williams in 1951 and by Schweinfurth in 1958, inflated the number of species of this genus again. Finally D. Szlachetko, with several studies in the 1990s, divided this genus in several genera, contained in 3 subtribes. During all these changes, there is only one species that has remained taxonomically unchanged : Spiranthes parksii

Flowers of this genus are commonly popular in Japan, where it is called Nejibana (lit.twisting flower.)

CultureEdit

Grow in moderate lighting. Plant grows in cool to cold temperatures and should be water regularly during growing season and reduced during flowering. Reduce watering during dormancy period in the winter and mist occasionally. Pot with 70% fine to medium grade perlite or clay and 30% soil, peat.

NamingEdit

This genus is named after the spiral form the flower take on the raceme

SynonymsEdit

  1. Aristotelea Lour. 1790
  2. Cyclopogon C. Presl 1827
  3. Cycloptera (R. Brown) Spach 1841
  4. Dothilis Raf. 1836-7
  5. Gyrostachys Pers. ex Blume 1859
  6. Ibidium Salisb. ex Small 1913
  7. Stenorrhynchos Rich. ex Spreng. 1826
  8. Triorchis Millan 1765

Species Edit

  • Spiranthes aestivalis (Poir.) Rich. (1817) : Summer-flowering Spiranthes (Western & Central Europe to NW. Africa)
  • Spiranthes angustilabris J.J.Sm. (1913) (New Guinea)
  • Spiranthes brevilabris Lindl. (1840) : Texas Ladies'-tresses (SE. U.S.A. to East Texas)
    • Spiranthes brevilabris var. brevilabris
    • Spiranthes brevilabris var. floridana (Wherry) Luer (1972).
  • Spiranthes casei Catling & Cruise (1974 publ. 1975) : Case's ladies'-tresses (Eastern Canada to NE. U.S.A.)
    • Spiranthes casei var. casei
    • Spiranthes casei var. novaescotiae Catling (1981) (Nova Scotia)
  • Spiranthes cernua (L.) Rich. (1817) : Nodding Ladies'-tresses (Eastern Canada to Central & Eastern U.S.A.)
  • Spiranthes delitescens Sheviak (1990) : Reclusive Ladies'-tresses (Arizona)
  • Spiranthes diluvialis Sheviak (1984) : Ute's Ladies'-tresses (NW. U.S.A. to Nebraska)
  • Spiranthes eatonii Ames ex P.M.Br. (1999) : Eaton's Ladies'-tresses (SE. U.S.A. to E. Texas)
  • Spiranthes graminea Lindl. in G.Bentham (1840) : Canelo Ladies'-tresses (Arizona, Mexico, Honduras, Nicaragua)
  • Spiranthes hongkongensis S.Y.Hu & Barretto (1976)(Hong Kong)
  • Spiranthes infernalis Sheviak (1989): Ash Meadows Ladies'-tresses (Nevada)
  • Spiranthes lacera (Raf.) Raf. (1833) : Northern Slender Ladies'-tresses (C. & E. Canada to C. & E. U.S.A)
    • Spiranthes lacera var. gracilis : Slender Ladies'-tresses (Bigelow) Luer (1975) (S. Ontario to C. & E. U.S.A.)
    • Spiranthes lacera var. lacera
  • Spiranthes laciniata (Small) Ames (1905): Lace-lipped Ladies'-tresses (New Jersey to E. Texas)
  • Spiranthes longilabris Lindl. (1840) : Giant-spiral Ladies'-tresses (SE. U.S.A. to E. Texas)
  • Spiranthes lucida (H.H.Eaton) Ames (1908) : Shining Ladies'-tresses (SE. Canada, NC. & E. U.S.A.)
  • Spiranthes magnicamporum Sheviak (1973) : Great Plains Ladies'-tresses (S. Canada to C. & EC. U.S.A.)
  • Spiranthes nebulorum Catling & V.R.Catling (1988) (Mexico, Guatemala)
  • Spiranthes ochroleuca (Rydb.) Rydb. (1932) : Yellow Nodding Ladies'-tresses (SE. Canada to E. U.S.A.)
  • Spiranthes odorata (Nutt.) Lindl. (1840) : Fragrant Ladies'-tresses, Marsh Ladies'-tresses (SE. U.S.A. to SE. Oklahoma)
  • Spiranthes ovalis Lindl. (1840) : October ladies'-tresses (Ontario to EC. & SE. U.S.A.)
    • Spiranthes ovalis var. erostellata Catling (1983).
    • Spiranthes ovalis var. ovalis
  • Spiranthes parksii Correll (1947): Navasota Ladies'-tresses (Texas)
  • Spiranthes porrifolia Lindl. (1840) : Leek-leaved Ladies'-tresses, Creamy ladies'-tresses (W. USA)
  • Spiranthes praecox (Walter) S.Watson in A.Gray (1890) : Early-blooming Spiranthes, Green-vein ladies'-tresses (New Jersey to E. Texas)
  • Spiranthes pusilla (Blume) Miq. (1859) (Sumatra)
  • Spiranthes romanzoffiana Cham. (1828) : Hooded Ladies'-tresses (Great Britain, Ireland, Subarctic America to N. & WC. U.S.A)
  • Spiranthes sinensis (Pers.) Ames (1908) : Chinese Spiranthes (E. European Russia to Pacific, Borneo, Java, Sumatra, Philippines, Australia, Tasmania, New Zealand, New Guinea, Samoa, Vanuatu)
    • Spiranthes sinensis f. autumnus Tsukaya (2005) (Japan)
  • Spiranthes spiralis (L.) Chevall. (1827) : Spiraled Spiranthes (Europe, Mediterranean to W. Himalaya)
  • Spiranthes torta (Thunb.) Garay & H.R.Sweet in R.A.Howard (1974): Southern ladies'-tresses (Florida, Caribbean, Mexico, Central America)
  • Spiranthes tuberosa Raf. (1833) : Little Ladies'-tresses (E. & EC. U.S.A)
  • Spiranthes vernalis Engelm. & A.Gray (1845): Spring Ladies'-tresses (Quebec, E. & EC. U.S.A, Mexico, Guatemala, Bahamas)

Natural HybridsEdit

Since the species do not readily cross with each other, hybrids are rare in this genus.

ReferencesEdit

This page uses Creative Commons Licensed content from Wikipedia (view authors). Smallwikipedialogo.png
  • Schlechter, R. (1920). "Versuch einer systematischen Neuordnung der Spiranthinae". Beih. Bot. Centralbl. 37: 317–454. (in German)
  • Williams, L.O. (1951). "The Orchidaceae of Mexico". Ceiba 2: 1–321.
  1. Schweinfurt C. (1958). "Orchids of Peru". Fieldiana Bot. 30: 1–260.
  • Szlachetko D.L. (1996). "Studies on Spirantheae (Orchidaceae) I. Varia". Fragm. Flor. Geobot. 41: 845–863.
  • Sheviak C. (1990). "A new Spiranthes (Orchidaceae) from the cienegas of southernmost Arizona". Rhodora 92: 213–231.

External LinksEdit

CulturesheetsSpiranthes at CultureSheet.org

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.