?Drosera madagascariensis Conservation status: Endangered
Scientific classification
Kingdom: Plantae Order: Caryophyllales Family: Droseraceae Genus: Drosera
Binomial name
Drosera madagascariensis DC.

Drosera madagascariensis is a carnivorous plant of the Sundew genus (Drosera). It was described in 1824 by A. P. de Candolle and is native to Africa. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants... Families Achatocarpaceae Aizoaceae (Fig-marigold family) Amaranthaceae (amaranth family) Ancistrocladaceae Asteropeiaceae Barbeuiaceae Basellaceae (basella family) Cactaceae (cactus family) Caryophyllaceae (carnation family) Dioncophyllaceae Droseraceae (sundew family) Drosophyllaceae Frankeniaceae Molluginaceae (carpetweed family) Nepenthaceae Nyctaginaceae (four-oclock family) Physenaceae Phytolaccaceae (pokeweed family) Plumbaginaceae (plumbago family) Polygonaceae (buckwheat family) Portulacaceae (purslane family) Rhabdodendraceae... Genus Aldrovanda Dionaea Drosera Drosophyllum The Droseraceae are a family of carnivorous plants, commonly known as the sundew family. ... Categories: Plant stubs | Carnivorous plants | Magnoliopsida ... In biology, binomial nomenclature is the formal method of naming species. ... A. P. de Candolle A. P. de Candolle (February 4, 1778 - September 9, 1841) was one of the great botanists of all time. ... Nepenthes mirabilis in flower, growing on a road cut in Palau A carnivorous plant (sometimes called an insectivorous plant) is a plant that derives some or most of its nutrients (but not energy) by trapping and consuming animals or protozoans, especially insects and other arthropods. ... Species See separate list. ... Categories: Plant stubs | Carnivorous plants | Magnoliopsida ... A. P. de Candolle A. P. de Candolle (February 4, 1778 - September 9, 1841) was one of the great botanists of all time. ...

Description

Drosera madagascariensis is a robust stem-forming species with a clearly visible stem, which stands upright in the case of younger plants and either uses its leaves to anchor itself to surrounding vegetation as it matures or bends over and forms a scrambling stem. In common parlance, a stem is any elongated, usually narrow, extension or supporting structure of an object. ...

Leaves

The plant grows to a height of 25 cm. (10 in.). The upper part of the plant is composed of carnivorous leaves while the lower part of the stem is covered with the dried remains of older leaves. The leaf arrangement on the stem is alternate. The petioles are 1.5-3 cm. long and support 10-15 mm. long and 7 mm. wide obtuse to spatulate laminae. The root system is relatively undeveloped, serving mainly as an anchor and for water absorption, since nutrient uptake is achieved through carnivory. A centimetre (US: centimeter) is a factor of the SI unit of length: there are one hundred centimeters in the base unit of measure, the metre. ... The leaves of a Beech tree A leaf with laminar structure and pinnate venation In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ... A petiole (also called a pedicel) is the first abdominal segment of members of the Apocrita. ... A centimetre (US: centimeter) is a factor of the SI unit of length: there are one hundred centimeters in the base unit of measure, the metre. ... A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ... A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ... Image File history File links Download high resolution version (2163x1977, 603 KB) Summary Chart of leaf morphology characteristics. ... Image File history File links Download high resolution version (2163x1977, 603 KB) Summary Chart of leaf morphology characteristics. ... The leaves of a Beech tree A leaf with laminar structure and pinnate venation In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ...

Flowers and fruit

Drosera madagascariensis flower

Drosera madagascariensis forms one or two slightly pubescent inflorescences which are 20-40 cm.(8-16") tall and bear 4-12 flowers on 2-5 mm. long peduncles. The Sepals are ovate and slightly pubescent. The pink petals are obovate, 6-12 mm. (0.25-0.5") long and 4-6 mm. wide. The seed capsules are dehiscent and bear numerous seeds up to 0.6 mm. long. Pubescent has several meanings: A pubescent person is a young individual who is undergoing the physical and mental changes associated with puberty. ... An inflorescence is a group or cluster of flowers on a branch of a plant. ... A centimetre (US: centimeter) is a factor of the SI unit of length: there are one hundred centimeters in the base unit of measure, the metre. ... Wildflowers A flower is the reproductive organ of those plants classified as angiosperms ( flowering plants; Division Magnoliophyta). ... A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ... In botany, a peduncle is a flower stalk supporting either a cluster or a solitary flower. ... Flower of the Primrose Willowherb (Ludwigia octovalvis) showing petals and sepals A sepal is one member or part of the calyx of a flower. ... A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ... A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ... A millimetre (American spelling: millimeter, symbol mm) is an SI unit of length that is equal to one thousandth of a metre. ...

Distribution

Drosera madagascariensis is native to the tropical Africa (Guinea, Nigeria, Cameroon, Congo, Angola, Zambesi, Tanganyika) as far south as South Africa and east to the island of Madagascar. It is found in swamps and sphagnum bogs. For other uses, see Africa (disambiguation). ... Zambezi River in North Western Zambia The Zambezi (also spelled Zambesi) is a river in Southern Africa. ... Flag of Tanganyika Tanganyika was an East African republic within the Commonwealth of Nations, named after Lake Tanganyika, which formed its western border. ...

Uses and environmental status

Drosera madagascariensis is used as a replacement for the widely protected English sundew for use in herbal medicine. While plant are often cultivated for this purpose, plants are also harvested from the wild in portions of Madagascar. Between 10 and 200 million plants are harvested there on a yearly basis. Because of this exploitation of natural resources, this species is considered highly endangered in Madagascar. Timber Exploitation of natural resources is an essential condition of the human existence. ...

References

• Ludwig Diels: Droseraceae. in Engler, A. (Hrsg.): Pflanzenr. 4, 112 : 109, 1906
• A.A. Obermeyer: The Flora of Southern Africa Vol. 13.

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Drosera madagascariensis