Epidendrum ibaguense

Epidendrum ibaguense (pronounced ee-bah-GAIN-say) is a species of epiphytic orchid of the genus Epidendrum which occurs in Trinidad, French Guiana, Venezuela, Colombia and Northern Brazil.

Epidendrum ibaguense
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Genus: Epidendrum
Subgenus: Epidendrum subg. Amphiglottium
Section: Epidendrum sect. Schistochila
Subsection: Epidendrum subsect. Tuberculata
Species:
E. ibaguense
Binomial name
Epidendrum ibaguense
Kunth in H.B.K.

Taxonomy

According to Reichenbach, E. ibaguense belongs to the subsection Tuberculata Rchb.f. of section Schistochila Rchb.f. of subgenus Amphiglotium Lindl..[1]

According to Kew,[2] E. decipiens Lindl. (1853) (p. 391, Reichenbach 1861)) and E. schomburgkii var. confluens (p. 389-390, Reichenbach 1861) are synonyms of E. ibaguense; according to Reichenbach 1861, these two separate species belong to the subsection Carinata.

Other synonyms (according to Kew) :

  • Epidendrum decipiens Lindl., 1853
  • Epidendrum schomburgkii var. confluens Lindl., 1853
  • Epidendrum chrysostomum Rchb.f.,1856
  • Epidendrum bituberculatum Rolfe, 1892
  • Epidendrum planiceps Kraenzl., 1911
  • Epidendrum laetum Schltr., 1919
  • Epidendrum fraternum Schltr., 1920
  • Epidendrum smithii Schltr., 1920
  • Epidendrum sororium Schltr., 1920
  • Epidendrum miquelii Schltr., 1925
  • Epidendrum ibaguense var. confluens (Lindl.) C.Schweinf., 1944

Description

Like the other members of Epidendrum subgenus Amphiglotium Lindl., E. ibaguense exhibits a pseudo-monopodial growth habit: it produces a vertical stem covered with the sheathing bases of distichous leaves and without the swelling typical of the pseudobulbs found in many sympodial orchids. However, E. ibaguense is actually sympodial: the peduncle of the inflorescence, tightly covered for most of its length by thin, overlapping sheaths, is terminal, not lateral. A new growth is then (usually) produced from near the base of the old one, although E. ibaguense will frequently produce a keiki from an old inflorescence. Like the other members of Epidendrum Amphiglotium section Schistochila Rchb.f., E. ibaguense flowers are borne on a congested, successively flowering raceme at the end of a long peduncle, and have a trilobate lip that is adnate to the column to the very apex. Like the members of the subsections Carinata Rchb.f. and Tuberculata Rchb.f., the three lobes of the E. ibaguense lip are deeply fringed or lacerate. Like E. radicans, (but unlike E. secundum Jacq., E. fulgens, E. puniceoluteum, and E. cinnabarinum) the flowers of E. ibaguense are resupinate. E. ibaguense differs from E. radicans by producing most of its roots from near the bottom of the stem, and producing stems that "really stand up."[3] Like E. secundum Jacq. and E. radicans, different individuals of E. ibaguense can produce flowers that are lavender, red, orange, or yellow.

The chromosome number of an individual collected in Serra Pacaraina, Brazil, has been determined as 2n = 70.[4]

References
  1. Reichenbach, H. G. "ORCHIDES" in Müller, Carl, Ed. Walpers Annales Botanices Systematicae 6(1861)396. Berlin.
  2. "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew".
  3. Dressler, R. L.: "Will the Real Epidendrum ibaguense please stand up?" American Orchid Society Bulletin, 58(1989) pages 796 - 800
  4. Fábio Pinheiro, Samantha Koehler, Andréa Macêdo Corrêa, Maria Luiza Faria Salatino, Antonio Salatino & Fábio de Barros. "Phylogenetic relationships and infrageneric classification of Epidendrum subgenus Amphiglottium (Laeliinae, Orchidaceae)", Plant Systematics and Evolution published online 25 September 2009. Springer Wien. https://doi.org/10.1007%2Fs00606-009-0224-2
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