Purslane florets
Purslane florets | ||||||||||||
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Purslane florets ( Portulaca grandiflora ), flower |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Portulaca grandiflora | ||||||||||||
Hook. |
The purslane herb ( Portulaca grandiflora ) is a species of plant in the genus Portulaca ( Portulaca ), the only genus of the purslane family (Portulacaceae).
description
Portulaca grandiflora is an annual or poorly perennial herbaceous succulent plant. Their upright or ascending, up to 20 centimeters long shoots usually branch near the base. The spread out 20 to 25 millimeters long and 2 to 3 millimeters wide leaves are almost or completely round and taper towards the tip. In the leaf axils there are few to numerous, whitish, woolly hairs, which are usually shorter than the leaves.
The upside-down inflorescences are surrounded by eight to ten leaves. The large flowers reach a diameter of up to 4 centimeters. The five bright magenta-colored petals are obovate and 15 to 26 millimeters long. Around the ovary with four to nine whitish stigmas are around 50 stamens .
The 4 to 6 millimeter large fruit can be torn open. The gray-black to black, obtuse-cone-shaped seeds are 0.75 to 1 millimeter in size.
Distribution, number of chromosomes and systematics
Portulaca grandiflora is native to Uruguay , Paraguay and Argentina , where the plants grow on sandy soils. In countries with a frost-free climate it occurs wild.
The chromosome number is .
The first description was in 1829 by William Jackson Hooker . There are numerous synonyms. Robert Geesink (* 1945) classified it as a subspecies of Portulaca pilosa in 1969 , but this is not generally accepted.
proof
literature
- Urs Eggli (ed.): Succulent lexicon. Dicotyledons (dicotyledons) . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 437-438 .
Individual evidence
- ↑ Portulaca in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved September 20, 2017.
- ↑ Botanical Magazine; or, Flower-Garden Displayed . Volume 56, plate 2885. London 1829
- ↑ Blumea. Tijdschrift voor de Systematiek en de Geography of Plants . Volume 17, No. 2, p. 297, Leiden 1969