Artorima erubescens

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Artorima erubescens
Artorima erubescens, illustration

Artorima erubescens , illustration

Systematics
Family : Orchids (orchidaceae)
Subfamily : Epidendroideae
Tribe : Epidendreae
Sub tribus : Laeliinae
Genre : Artorima
Type : Artorima erubescens
Scientific name of the  genus
Artorima
Dressler & GEPollard
Scientific name of the  species
Artorima erubescens
( Lindl. ) Dressler & GEPollard

The Orchid Artorima erubescens is the only kind in the plant genus Artorima within the family of orchids (Orchidaceae). The plants grow epiphytically in pine and oak forests in high elevations in Mexico. It is one of the few species of orchid in which the pollinia is pinned to the leg of an insect visiting the flower.

Artorima erubescens inflorescence
Habitus and inflorescence of Artorima erubescens

description

The shoot axes of Artorima erubescens are at intervals of up to 30 centimeters on a thick, creeping rhizome covered by lower leaves . The rungs form rounded, reddish-brown internodes consisting of several internodes. Three to six leaves are in the upper part of the pseudobulbs.

The flowering period extends from November to February. The terminal, paniculate inflorescence can reach a length of 20 centimeters to a meter and carry six to 100 flowers . The resupinated flowers are pink, the ovary dark purple. The sepals are oblong-oval. The two outer petals are broadly spatulate and slightly wavy on the edge. The lip is three-lobed, the side lobes are turned up and enclose the column ; where they reach the front end of the column they are bent outwards. The middle lobe is again indistinctly two-lobed or slightly indented at the tip, the two lobes are bent downwards like a roof. At the base, the lip is fused with the column, from there to the middle of the middle lobe a yellow, three-keeled callus extends. The dust bag is also yellow . The column is long and straight. The column is winged on the sides, these wings are folded up on the underside of the column and cover the underside - and thus the stigma and the pollinia .

The colored flowers with the yellow center attract bees. If they get one leg into the slot between the wings of the column, they try to kick freely and get a pollinium stuck to the leg or touch the scar with a previously attached pollinium.

Occurrence

Artorima erubescens grows in the Mexican states of Oaxaca and Guerrero at altitudes of 2400 to 3100 meters of the Sierra Madre del Sur and the Sierra San Felipe . It occurs as an epiphyte in cloud forests with pine and oak species. The temperatures there can fluctuate greatly between day and night and can drop to freezing point on winter nights when the plants are in bloom.

Systematics

The genus Artorima belongs to the tribe Epidendreae in the subfamily Epidendroideae within the family Orchidaceae . Artorima is closely related to Prosthechea and Alamania . Other related genera are summarized in the Subtribus Laeliinae .

This species was first described by John Lindley in 1840 as Epidendrum erubescens . It was then placed in the genus Encyclia by Rudolf Schlechter in 1914 . Robert Louis Dressler and Glenn E. Pollard established their own genus Artorima for Artorima erubescens in 1971 .

The generic name Artorima is made up of the Latin terms “artus” and “rima” and means “narrow gap”. It refers to the wings of the column with only a gap between them. The epithet erubescens , "blushing" refers to the pink flowers.

use

Artorima erubescens are sometimes used as cut flowers taken from nature in Mexico . Due to the large distances between the pseudobulbs and the demands on cool temperatures and high humidity, the culture was rarely successful.

Individual evidence

  1. Cássio van den Berg et al .: A phylogenetic analysis of Laeliinae (Orchidaceae) based on sequence data from internal transcribed spacers (ITS) of nuclear ribosomal DNA. ( Memento of the original from September 26, 2007 in the Internet Archive ) Info: The @1@ 2Template: Webachiv / IABot / www.cassiovandenberg.com archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. In: Lindleyana. West Palm Beach Fla 15.2000,2, 96-114. ISSN  0889-258X

literature

Web links

Commons : Artorima erubescens  - album with pictures, videos and audio files