Nepenthes mirabilis
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Nepenthes mirabilis |
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| ( Lour. ) Druce |
Nepenthes mirabilis is a pitcher plant species from the pitcher plant family(Nepenthaceae). It is the most widespread of all pitcher plant species.
description
Habitus
Nepenthes mirabilis is a perennial subshrub . It climbs up to ten meters in dense vegetation, in open terrain it remains a short shrub with a height of up to two meters. The trunk has a diameter of up to ten millimeters. Young plants have short, white hairs, but mature plants are hairless. In old plants, the leaves are occasionally in a rosette at the base.
leaves
The leaves on native rosettes are sessile, leathery, lanceolate and up to ten centimeters long. From the beginning of the central rib, four to five parallel side ribs arise on each side.
The higher leaves are formed at intervals of two to ten centimeters along the stem axis . They are stalked, the petiole is 15 to 25 centimeters long, the leaf blades (which appear to be, but actually represent a transformed leaf base) are between twenty and forty centimeters long, three to eight centimeters wide, less leathery than the leaves of the rosette and inversely ovate to broadly linear lanceolate. From the beginning of the central rib, five to eight parallel side ribs arise on each side.
At the end of the "leaf blade" the central rib merges into a tendril that can be as long as the "leaf blade" itself and, if it is can-bearing, is usually twisted once before it ends in the bottom of the can.
Pitchers
The pitchers of the two leaf shapes differ slightly, those of the native rosettes are up to five centimeters in size, the lower half is inclined, egg-shaped, the upper half thinner, tubular.
Spreading, habitat
Nepenthes mirabilis is found from southern China via Hong Kong, the Malaysian Peninsula, Thailand, Myanmar, Cambodia, Borneo, Sumatra, the Philippines, Micronesia, New Guinea and Australia. It mostly inhabits open, swampy habitats with sandy soils, but occasionally also in denser vegetation.
Systematics
The species has often been described synonymously due to its wide distribution and its pronounced variability. Their variability has also led to the description of numerous sub-taxa, including the rare Nepenthes mirabilis var. Echinostoma, which is endemic to Brunei .
Nepenthes mirabilis is closely related to Nepenthes rowanae , the only pitcher plant that is endemic to Australia.
literature
- Martin Cheek, Matthew Jebb: Nepenthaceae (= Flora Malesiana. Ser. 1: Spermatophyta. Vol. 15). Nationaal Herbarium Nederland, Leiden 2001, ISBN 90-71236-49-8 .
- Charles Clarke: Nepenthes of Borneo. Natural History Publishing et al., Kota Kinabalu et al. 1997, ISBN 983-812-015-4 .
- Benedictus H. Danser : The Nepenthaceae of the Netherlands Indies. = Contributions à l'étude de la flores des Indes Néerlandaises. XV. In: Bulletin du Jardin de Botanique. Series 3, Vol. 9, No. 3-4, 1928, ISSN 0852-8756 , pp. 249-438, ( N. mirabilis -Text online ).
- Allen Lowrie: Carnivorous Plants of Australia. Volume 3. University of Western Australia Press, Nedlands 1998, ISBN 1-875560-59-9 .
- Flora Of China. Volume 8, p. 198, ( full text online ).
Web links
- Nepenthes mirabilis in the endangered Red List species the IUCN 2006 Posted by: Clarke et al , 2000. Retrieved on 12 May, 2006.