Pelargonium tetragonum
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Pelargonium tetragonum is a plant of the genus Pelargonium ( Pelargonium ) within the family of geraniaceae (Geraniaceae). It is based in South Africa.
description
Vegetative characteristics
Pelargonium tetragonum grows as a heavily branched climbing shrub. The blunt 3 to 4-edged, succulent shoots are relatively slender and brittle and can be up to 2 meters long. The internodes are comparatively long. The semi-succulent leaves are bare to shaggy and hairy and have occasional glandular hairs . The heart to kidney-shaped leaf blade is divided into 5 hand-shaped parts and is often provided with zonal markings. The petiole is significantly longer than the blade.
Generative characteristics
The unbranched inflorescence usually contains 2 flowers. The very short flower stalk is much shorter than the flower cup . The 4 to less often 5 petals are cream-colored to pink in color and have wine-red markings. The upper two are made relatively large and twice as long as the two lower ones. There are seven fertile stamens .
Chromosome number
The number of chromosomes is 2n = 22.
Occurrence
The distribution area of Pelargonium tetragonum is in the South African provinces of the Western Cape and Eastern Cape .
Systematics
It was first described as Geranium tetragonum in 1781 by Carl von Linné . Charles Louis L'Héritier de Brutelle placed the species in 1789 in the genus Pelargonium, which he created .
Synonyms for Pelargonium tetragonum (Lf) L'Hér. are Jenkinsonia tetragona (Lf) Sweet , Chorisma tetragona (Lf) Ecklon & Zeyer and Chorisma flavescens Ecklon & Zeyer .
The species belongs to the Chorisma DC section . It is rated “Least Concern” in the Red List of Endangered Plant Species in South Africa.
proof
literature
- F. Albers: Pelargonium tetragonum : In: Urs Eggli (Hrsg.): Succulents Lexicon Volume 2 Dicotyledonous plants (dicotyledons) except Aizoaceae, Asclepiadaceae, Cactaceae and Crassulaceae . Eugen Ulmer Verlag, Stuttgart 2002, ISBN 3-8001-3915-4 , p. 286.
Individual evidence
- ↑ Pelargonium tetragonum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ Supplementum plantarum Systematis vegetabilium editionis decimae tertiae, Generum plantarum editionis sextae, et Specierum plantarum editionis secunda. Page 305, publ. 1782 (online) .
- ^ William Aiton: Hortus Kewensis; or, a Catalog of the Plants Cultivated in the Royal Botanic Garden at Kew . Volume 2, London 1789, p. 427 ( online ).
- ↑ Pelargonium tetragonum , In: National Assessment: Red List of South African Plants version 2013.1 .
Web links
- Herbarium evidence for Pelargonium tetragonum