Trichocereeae
| Trichocereeae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Trichocereeae | ||||||||||||
| Buxb. |
The Trichocereeae are a tribe in the subfamily Cactoideae of the cactus family (Cactaceae).
description
The tree-like to shrubby growing Trichocereeae normally form non-segmented, spherical to columnar trunks , which are usually ribbed, ware-bearing or ribbed-ware-bearing.
The small to fairly large, regular or bilaterally symmetrical flowers appear laterally or below the apex and open during the day or at night. The flower cup is scaled or covered with hair .
The fruits are fleshy to berry-like and sometimes burst lengthways. They contain small to medium-sized seeds that vary in shape. The hilum and micropyle of the seeds are connected or united. Appendages are usually absent. A Strophiole is present in some.
Systematics and distribution
The tribe Trichocereeae is distributed south of the equator in South America and on the Galápagos Islands .
The current classification as a tribe of the Cactaceae was made in 1958 by Franz Buxbaum . According to Edward Frederick Anderson (2005) the following genera belong to the tribe:
- Acanthocalycium Backeb.
- Arthrocereus A. Berger
- Cephalocleistocactus F. Knight
- Cleistocactus Lem.
- Denmoza Britton & Rose
- Discocactus whistle.
- Echinopsis Zucc.
- Espostoa Britton & Rose
- Espostoopsis Buxb.
- Facheiroa Britton & Rose
- Gymnocalycium whistle. ex mediator
- Haageocereus Backeb.
- Harrisia Britton
- Lasiocereus F. Knight
- Leocereus Britton & Rose
- Matucana Britton & Rose
- Mila Britton & Rose
- Oreocereus (A. Berger) Riccob.
- Oroya Britton & Rose
- Pygmaeocereus H. Johnson & Backeb.
- Rauhocereus Backeb.
- Rebutia K. Schum.
- Samaipaticereus Cárdenas
- Sulcorebutia Backeb.
- Weberbauer ocereus Backeb.
- Weingartia Werderm.
- Yungasocereus F. Knight
To this extent the tribe is not monophyletic .
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 58-59 .
- Mónica Arakaki, Douglas E. Soltis, Pablo Speranza: New chromosome counts and evidence of polyploidy in Haageocereus and related genera in tribe Trichocereeae and other tribes of Cactaceae . In: Brittonia . Volume 59, No. 3, July 2007 doi : 10.1663 / 0007-196X (2007) 59% 5B290: NCCAEO% 5D2.0.CO; 2
- Anita Lendel, Urs Eggli Reto Nyffeler: Phylogenetic relationships in the tribe Trichocereeae (Cactaceae) inferred from cpDNA sequence data analysis . Lecture at the Botany 2006 . Summary
Individual evidence
- ↑ Anita Lendel, Reto Nyffeler: Molecular systematics and growth form evolution in the tribe Trichocereeae (Cactaceae) . online (PDF; 411 kB)
