Cattleyella araguaiensis
| Cattleyella araguaiensis | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cattleyella araguaiensis |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name of the genus | ||||||||||||
| Cattleyella | ||||||||||||
| Van den Berg & MWChase | ||||||||||||
| Scientific name of the species | ||||||||||||
| Cattleyella araguaiensis | ||||||||||||
| ( Pabst ) Van den Berg & MWChase |
The orchid Cattleyella araguaiensis is the only species in the genus Cattleyella . It was only described by Pabst in 1967 as Cattleya araguaiensis and in 2004 it was placed in its own genus by Van den Berg and Chase. The small plants grow epiphytically and are native to the Amazon rainforests of Brazil.
description
Cattleyella araguaiensis sprouts at a short distance from a creeping rhizome . These are not thickened, they consist of several internodes and are five to seven centimeters long with a diameter of three to five millimeters. The rhizome and shoot are surrounded by membranous, dry lower leaves. A leaf sits at the tip of the pseudobulbs . The tough leaves are oblong-oval, about ten centimeters long by two to three centimeters wide, rounded at the tip, tapering in a wedge shape at the base.
The inflorescence appears from a flower sheath at the tip of the shoot. It usually only bears a resupinated flower . The sepals and petals are almost the same: narrow, about five to six inches long and seven millimeters wide, greenish-brown in color. The lip is only indistinctly three-lobed, the side lobes are rolled around the column and overlap on its top. A red spot can be seen from the base of the lip to the middle, the tip is colored yellow and set off with a red stripe. The approximately two centimeter long column is completely hidden in the flower tube. The stamen contains four pollinia .
distribution
Cattleyella araguaiensis was found in the Brazilian state of Goiás , near the eponymous Rio Araguaia and the tributaries Rio Formoso and Rio Cocos . The species grows there as an epiphyte in the lower crown area on thin branches.
Systematics
Within the subfamily Epidendroideae , the genus Cattleyella is classified in the tribe Epidendreae and there in the subtribe Laeliinae . Cattleyella is closely related to Brassavola , Cattleya , Guarianthe and Rhyncholaelia . Van den Berg and Chase established the genus Cattleyella in 2004 after Pabst first classified this species in the genus Cattleya . In 2008 van den Berg proposed an expanded concept for Cattleya , which again includes Cattleyella in this genus.
supporting documents
- Cássio van den Berg, Mark W. Chase (2004): Um novo gênero de Laeliinae do Brasil: Cattleyella Van den Berg & MWChase . Boletim CAOB 52: 100. Online, accessed December 21, 2007
- Guido J. Braem (1986): Cattleya. Vol. 2, pp. 13ff. Brücke-Verlag Kurt Schmersow, Hildesheim ISBN 3-87105-020-2
- Rolf Diekmann (2001): The genus Cattleya. P. 126. Parey, Berlin ISBN 3-8263-3309-8
- Carl L. Withner (1998): The Cattleyas and their relatives . Vol. 1, pp. 39f. Timber Press, Portland, Oregon ISBN 0-88192-099-1
Individual evidence
- ^ Cássio van den Berg et al. (2000): A phylogenetic analysis of Laeliinae (Orchidaceae) based on sequence data from internal transcribed spacers (ITS) of nuclear ribosomal DNA. Lindleyana 15 (2): 96-114. Online, accessed on December 14, 2007 ( Memento of the original from September 26, 2007 in the Internet Archive ) Info: The 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.
- ^ C. van den Berg: New combinations in the genus Cattleya (Orchidaceae) . In: Neodiversity . tape 3 , 2008, p. 3–12 ( cassiovandenberg.com [PDF]).
