Laelia

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Laelia
Laelia-anceps.jpg
Laelia anceps
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Epidendreae
Subtribe: Laeliinae
Genus: Laelia
Lindl., 1831
Species

See text

Laelia is a small genus of 25 species[1] in the orchid family (Orchidaceae). Laelia species are found in areas of subtropical or temperate climate in Central and South America, but mostly in Mexico.[2] Laelia is abbreviated L. in the horticultural trade.[3]

Description[edit]

Mostly epiphyte herbs (with a few lithophytes) with laterally compressed pseudobulbs.[4][2] One to four leathery or fleshy leaves are born near the top of each pseudobulb, and can be broadly ovate to oblong.[4] The inflorescence is a terminal raceme (rarely a panicle).[4][2] The flowers have 8 pollinia; petals are of a thinner texture than the sepals; sepals and petals are of similar shape, but the sepals being narrower; the lip or labellum is free from the arched flower column.[4][2]

Distribution[edit]

Species of Laelia can be found from western Mexico south to Bolivia, from sea level to mountain forests.[2][5]

Taxonomy[edit]

The genus Laelia was described as part of subfamily Epidendroideae by John Lindley.[6] Brazilian Laelias, after being classified for several years under Sophronitis,[7] have now been placed in the genus Cattleya.[8] Moreover, species formerly placed in the genus Schomburgkia have been moved either to the genus Laelia or Myrmecophila.[9]

Laelia gouldiana

Species[edit]

Laelia comprises the following species:[1]

Ecology[edit]

Species in this genus are found in forests from sea level to mountain habitats above 2000 m.[2] Species from above 2000 m of elevation like L. albida, and L. autumnalis are adapted to temperate climates and can be grown outdoors in places like the Mexican Plateau, California and other subtropical areas with cool summers.[2]

Laelia is one of the orchid genera known to use crassulacean acid metabolism photosynthesis,[10] which reduces evapotranspiration during daylight because carbon dioxide is collected at night.

Cultivation[edit]

Laelias can be grown fastened to tree trunks, as long as the tree won't cast a deep shadow; they can also be fastened to a piece of branch or a slab of cork so they can be hung in a place facing south.[2] The growing medium must have good drainage, rapidly drying after watering; pieces of pine bark, charcoal or pebbles are good choices.[2] Watering can be done 2-3 times a week, but with lower frequency in winter.[2] Fertilization can be done with a very dilute solution, twice a month especially during growing season (May to November in Northern Hemisphere).[2]

References[edit]

  1. ^ a b "Laelia (Orchidaceae) - The Plant List". Retrieved 9 May 2017. 
  2. ^ a b c d e f g h i j k Halbinger, F.; Soto, M. (1997). "Laelias of Mexico". Orquídea. 15: 1–160. 
  3. ^ "Alphabetical list of standard abbreviations of all generic names occurring in current use in orchid hybrid registration as at 31st December 2007" (PDF). Royal Horticultural Society. 
  4. ^ a b c d Schweinfurth, C. (1960). "Orchids of Peru". Fieldiana. Chicago Natural History Museum. 30 (3): 536. 
  5. ^ Schweinfurth, C. (1970). "First supplement to the Orchids of Peru". Fieldiana. Field Museum of Natural History. 33: 46. 
  6. ^ John Lindley (1830–1840). The genera and species of orchidaceous plants. Ridgways; available from Biodiversity Heritage Library. p. 115. 
  7. ^ C. van den Berg; M. W. Chase (2000). "Nomenclatural notes on Laeliinae – I". Lindleyana. 15 (2): 115–119. 
  8. ^ Berg, Cássio van den (2014). "Reaching a compromise between conflicting nuclear and plastid phylogenetic trees: a new classification for the genus Cattleya (Epidendreae; Epidendroideae; Orchidaceae)". Phytotaxa. 186 (2): 75–86. doi:10.11646/phytotaxa.186.2.2. ISSN 1179-3163. 
  9. ^ http://www.aos.org/Default.aspx?id=171 AOS article "Farewell Schomburgkia"
  10. ^ Gilberto Barbante Kerbauy; Cassia Ayumi Takahashi; Alejandra Matiz Lopez; Aline Tiemi Matsumura; Leonardo Hamachi; Lucas Macedo Félix; Paula Natália Pereira; Luciano Freschi; Helenice Mercier (2012). "Crassulacean Acid Metabolism in Epiphytic Orchids: Current Knowledge, Future Perspectives". Applied Photosynthesis, Dr Mohammad Najafpour (Ed.), ISBN 978-953-510-061-4. 

External links[edit]

  • Media related to Laelia at Wikimedia Commons
  • Data related to Laelia at Wikispecies