Nepenthes pervillei

Nepenthes pervillei, air pot

Nepenthes pervillei is a Kannenpflanzenart from the family of pitcher plants plants ( Nepenthaceae ). It is exclusively native to the Seychelles.

Description

Nepenthes pervillei is a crawling or climbing vine growing. The root is long and strongly developed. The woody stems is reddish brown and cylindrical in cross section.

The plant forms of rosettes. The leathery, bald, stipes broad leaves reach a length of up to 25 centimeters, the apparent leaf blades that are simply a re-formed leaf base in the strict sense, are entire, and obovate. The extreme end is tapered, the " base of the leaf " is tapered wedge-shaped. The sheets each half four or five side ribs are parallelläufig, the midrib protrudes in the form of a vine beyond the " lamina ", which merges at its end into the pot, until it is then the actual leaf blade.

The one in the genus actually pronounced contrast between soil and air cans cans is at Nepenthes pervillei less pronounced in near-bottom rosettes both forms may occur together with climbing plants, however, there are only air cans. The inwardly facing bottom cans the vine is up to 40 centimeters long, the pots are urn- shaped and have ciliated wing strips on. Air cans are up to 5 centimeters long vines, facing outward and the ciliated wing strips are missing. They are red up to 21 inches high and depending on the location, green, yellow or orange in color. If the opening is inclined from the inside outwards, the bent back transverse Peristom has standing ribs. The lid is round, horizontal standing straight and measure up to 3 inches in diameter.

The peduncle is up to 40 centimeters long and a panicle. It carries up to twenty-four blooms and grows exclusively of the rosettes of Luftkannen.Wie all pitcher plants Nepenthes is also pervillei dioecious, that is, a plant is either male or female, but never hermaphrodite. The male flowers have four, rarely five, at the base intergrown bloom, the individual lobes are up to 2 mm long and pointed. There are six anthers, the stamens are fused to a short column together. The female flowers have four or five bracts are fused at the base, stumpfgelappt and up to 2 millimeters long. The three or four scars bearing ovary are inverted - cone-shaped.

The fruit is inverted - cone-shaped and dreiklappig. It is leathery, olive green young, with increasing maturity, becoming light brown. Unusually for the genre of the black seeds are not thin filiform, but short and blunt at one end.

Dissemination

Nepenthes pitcher plants pervillei is the only type that occurs in the Seychelles, where they can be found on the islands of Mahé and Silhouette. It grows at altitudes of 350-500 meters on granite rocks.

Ecology

Nepenthes pervillei growing on a very thin or occasionally completely absent substrate layer, their long growing roots reach into deep cleft of the rocks, where they probably also absorbs the nitrogen there produced by cyanobacteria of the genus Lyngbyia as a nutrient in addition to moisture.

The pitchers of Nepenthes pervillei are the habitat of a species of mite, Creutzeria seychellensis.

System

The first description of Nepenthes pervillei in 1852 by Carl Ludwig von Blume. Due to some unique features within the genus of fruit, seeds, and male flower she put Hooker in 1873 in a separate section Anourosperma and Ernst Hans Hallier 1921 in a separate genus Anurosperma (sic).

Molecular biological studies suggest as well as morphological features indicate that Nepenthes ( Nepenthes madagascariensis Nepenthes and masoalensis in Madagascar and Nepenthes distillatoria from Sri Lanka ) forms pervillei together with the other endemic species of the western distribution limit a basal clade within the genus. ,