Nepenthes aristolochioides
Nepenthes aristolochioides
Nepenthes aristolochioides is a Kannenpflanzenart from the family of pitcher plants plants ( Nepenthaceae ). It was first described in 1997 by botanists Mathew Jebb and Martin Cheek. Your species name is a nod to the genre of the pipe winds ( Aristolochia ), whose flowers have a striking similarity with the pitchers of N. aristolochioides.
Description
Vegetative characteristics
Nepenthes aristolochioides is a climbing shrub whose shoots can reach 5-8 meters in length. The shoot axis is three to five inches thick and cylindrical, the internodes 7-10 cm long.
The sessile, leathery, bright green leaves are formed from an 8 to 14 inches long and three inches wide, lanceolate - spatulate apparent leaf blade, but in the strict sense is only a re-formed leaf base. This is shared by a large middle rib on its approach run from the central rib from six to ten side ribs, these in turn from the Blattnervatur irregular reticular. At the edges, it is covered with white hair.
The growing out of the top of the sheet substrate Ranke is about twice as long as the leaf base, does not form a loop, and on its end into the bottom of the pot.
How many pitcher plants Nepenthes species has also aristolochioides a so-called " Kannendimorphismus " on the ground-level cans are distinct from the air cans.
The off-white to pale red and numerous red speckled, bubble-shaped, leathery bottom cans are thick-walled, 5-7 inches high and 2.5 to 3 centimeters wide, its inside is completely glandular. You have two fringed wings which extend from the can approach to the peristome ( the edge of the pot opening ) and up to 1 mm wide. The fringes are to each other at a distance of 0.5 to 2 mm and 3 to 5 millimeters long. Can The opening is circular to ovate and up to 1.5 inches wide.
Unlike other species of the genus they are not facing upward, but is laterally and vertically sits diagonally facing outward at the top of the pot. The red to dark red peristome is flattened, 7-20 mm wide, the ribs are in 0.3 to 0.5 mm distance to each other, the teeth of the inner edge are two to three times as long as wide. The obliquely facing down over the opening fitting lid is circular to oval with a diameter of 1 to 1.5 centimeters to the entire surface ( but particularly close to the central rib ) filled with large glands, excrescences on the lower side is missing. From its midrib go per page from three distinctly protruding side ribs. On the underside of the lid is continuous red, yellow on the upper side with small red spots.
The air cans are slender trumpet- shaped, 7 to 10 centimeters high and 2.5 to 4 centimeters wide. Can The opening has almost vertically to the outside, the peristome is 4-6 millimeters wide. The lid is ovate and crossed by three to four outgoing from the midrib side ribs. In all other respects they are the same floor cans.
Inflorescences, flowers, fruits and seeds
Like all pitcher plants Nepenthes is also aristolochioides dioecious getrenntgeschlechtig ( dioecious ), that is, a plant is either male or female, but never hermaphrodite. The female racemose inflorescences are 14 to 15 inches long. The inflorescence stalk is 4-5 inches long and 2-4 mm thick. The pedicels of the lower flowers are 12 mm long, the upper 6 mm.
The capsule fruits are 15 to 20 millimeters long. The seeds are thready.
Dissemination
Nepenthes aristolochioides is known exclusively from the Tujuh Mountain in central Sumatra at altitudes 2000-2200 m. However, it is thought possible that it is also on the neighboring Kerinchi, the highest mountain in Sumatra occurrence.
Threat status
Although the deposits are located in the National Park Kerinchi - Seblat and protected by Nepenthes aristolochioides but is severely threatened by illegal Absammlungen of " plant lovers ." The IUCN therefore leads the way as " critically endangered ".
Botanical history
Was first collected in 1956 by Willem Meijer Nepenthes aristolochioides, who handed over his copy of the then Rijksherbarium the University of Leiden. This specimen (which was in poor condition ) was first seen in 1988 by Joachim mink. After consultation with Willem Meijer and view photographic evidence was clear that it was a previously undescribed species. In the summer of 1996 mink then traveled to Sumatra to rediscover the way and had success. The following year, the kind of Matthew Jebb and Martin Cheek was first described.
Swell
- Joachim Mink: Rediscovery of an outstanding Nepenthes: N. aristolochioides ( Nepenthaceae ), in: Carnivorous Plant Newsletter, 27:3, Ss. 101-114, online