Schreiteria macrocarpa
| Schreiteria macrocarpa | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Schreiteria | ||||||||||||
| Carolin | ||||||||||||
| Scientific name of the species | ||||||||||||
| Schreiteria macrocarpa | ||||||||||||
| ( Speg. ) Carolin |
Schreiteria macrocarpa is the only plant of monotypic genus Schreiteria within the family montiaceae (Montiaceae).
description
Vegetative characteristics
Schreiteria macrocarpa grows as a perennial , herbaceous plant and reaches heights of up to 70 centimeters. Their branched roots have bulbous thickenings of up to 1 centimeter in diameter. The halfway decrepit, slender, papillate shoot axes lignify at their base.
The leaf axils are bare. The alternately arranged, succulent leaves are quite far apart. Your linear, blunt and bald leaf blade is up to 3 centimeters long.
Generative characteristics
The inflorescence shaft is up to 10 centimeters long. The terminal inflorescence consists of dichasias or monochasias . The membranous bracts and bracts , which fall off early, are ovate and their edges are covered with large glandular teeth.
The hermaphrodite flowers are five-fold with a double flower envelope . The egg-shaped to circular sepals are about 4 millimeters long and their edges are covered with large glandular teeth. The five dark to pale red petals are egg-shaped, 8 to 12 millimeters long and not fused together. There are 20 to 30 stamens , the stamens of which are 8 to 10 millimeters long, briefly fused together at their base . Your dust bag are movable, the pollen polyrugat. The approximately 5 millimeter long stylus ends in three pits .
The three-lobed capsule fruits are elongated and up to 4 centimeters long and 2 to 3 millimeters in diameter. The fruit flaps open from the top. They contain laterally compressed, tiny irregularly papillate seeds with a small aril. The embryo almost completely encloses the perisperm .
distribution
Schreiteria macrocarpa occurs only in the northern part of the Argentine province of Tucumán .
Systematics
The first description of the genus Schreiteria in 1985 by Roger Charles Carolin . He was the only species in this genus that was first described by Carlos Luis Spegazzini in 1899 as Calandrinia macrocarpa . The botanical genus name Schreiteria honors the German-Argentine botanist Carlos Rodolfo Schreiter (1877–1942).
proof
literature
- Urs Eggli : Schreiteria. In: Urs Eggli (Hrsg.): Succulent lexicon. Volume 2: Dicotyledons (dicotyledons) , Eugen Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , p. 454.
Individual evidence
- ^ R. Carolin: Notas sobre Portulacaceae de la Argentina. In: Parodiana. Volume 3, Number 2, 1985, p. 330.
- ↑ Carolo Spegazzini Plantae novae nonnullae Americae australis . In: Comunicaciones del Museo Nacional de Buenos Aires . Volume 1, 1899, pp. 131-133 (online) .
- ↑ Lotte Burkhardt: Directory of eponymous plant names. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2016, ISBN 978-3-946292-10-4 . doi : 10.3372 / epolist2016