Nepenthes jamban
Nepenthes jamban, soil pot
Nepenthes jamban is a species of the genus of pitcher plants plants ( Nepenthaceae ). The Nepenthes jacque lineae related species is found only on the Indonesian island of Sumatra.
The species was discovered only in 2005, its name refers to the striking similarity of their cans with a toilet bowl ( jamban is the Indonesian word for toilet).
Description
Nepenthes jamban is a climbing vine that can grow to about 4 feet tall. The always- purple stem axis is in a rosette growing plants and short shoots cylindrical- angled, has 1 to 1.3 centimeters long internodes and has a diameter of about 3 millimeters. The Stems climbing plants measure up to 5 millimeters in diameter, their internodes reach a length of 1.8 to 5 centimeters. The plants are completely hairless with the exception of embryonic cans, the tendrils and inflorescences, which are densely covered with short, brownish- gray hair.
The top side light green, underside pale green, sessile, leathery leaves are narrow reverse- ovate to elliptic or slightly spatulate, 9 to 10.3 inches long and 2.2 to 3 inches wide in the rosette. At the far end they are pointed, the approach includes the stem axis to about three quarters. At each side of the midrib are found in the far each quarter of blade one or two side ribs fiederförmige Vein between runs obliquely. The tendrils are straight and up to 13 inches long.
The leaves climbing shoots are similar to those at the rosette, but the spreading are ovate to elliptic to slightly spatulate, 7-11 cm long and 2.6 to 3.3 inches wide. The sheet approach involves Sprossachse not decurrent half to two-thirds. The 15 to 24 inches long vines have a sling.
Cans
How many pitcher plants Nepenthes forms jamban Can two different ways ( Kannendimorphismus ), namely, soil and air cans. The laterally emerging from the ground Ranke cans are 3.5 to 5.8 inches long and 3.2 to 4.4 inches wide. The third lower cylindrical can to narrow in a trumpet shape, above which and increasingly wider in a trumpet shape, and laterally compressed, the can opening is approximately horizontal. The inside of the pot is completely covered with glands. There are two 10 x 2 mm wide wing strips that are covered with about 3 millimeters long fringes on its front. The up to 8 millimeters wide peristome is grown in the outer third of the pot and slightly inflected on the inside, his ribs are on the front at a distance of about 0.7 millimeters each other, toward the Cover Cap, they are less pronounced and are closer each other. The peristome runs out in about 0.5 millimeters long teeth to Can inside out. The standing on the lid approach spur is usually simple, occasionally forked and about 4 millimeters long. The cover 3.5 to 3.8 cm long and 0.9 to 1.3 cm wide is narrow extended reverse- ovoid, and horizontally across the can opening, bends at the edges, however, up to 120 °. Scattered over the underside of the lid, concentrated especially in the area around the midrib, there are small red glands, and around twenty to thirty very large, approximately 0.5 mm in diameter measured, crater-shaped glands that are located in the outermost quarter of the lid and on the top as clear bulges emerge. The cans are yellow -orange to bright red, the peristome is red.
The the bottom cans resembling air cans spring from the vine on its rear side. They are up to 7.5 (rarely to 12) cm long and up to 5.2 inches wide. They expand very gradually in the lower half, but then widen abruptly. The cans in cross-section are as round as the peristome. Pronounced wing strips missing, in the lower half of May they find themselves reduced to ribs. The peristome is flat, up to 6 mm wide, and grow together in the outer third of the pot. The ribs are about 1 millimeter apart and are up to 0.5 millimeters in size. The peristome teeth long runs out in about 1 millimeter to Can inside out. The air cans are bright yellow, red marks occasionally on the inside, the peristome is yellow to orange.
The standing on the lid approach spur is usually simple and up to 3.5 mm long. The cover up to 4.8 centimeters long and 0.9 centimeters wide is that of the soil churns the same, but slightly longer and is stretched out over the can opening at an angle of approximately 45 °.
Flowers and Fruit
Like the other species of the genus also is Nepenthes jamban dioecious, that is, there are all-male and female plants. Data on female flowers are not available.
The male inflorescence is a light green, up to 18 centimeters long and 2 centimeters wide grape. The inflorescence axis measures up to the approach of the grape from 4.2 to 6.5 cm, the rachis 8.2 to 11.5 centimeters. The terminal flower stems bearing single flowers are 0.5 to 1.4 inches long. Round 1 millimeter in front of each flower stalk is a thread-like, 2-9 mm long bract. The sepals are elliptical and about 3.5 millimeters long, the stamens are fused to a 1.5 to 3 mm long column.
Ripe fruit stands are grapes. The inflorescence axis measures up to the approach of the grape around 5 centimeters, the rachis 3 centimeters. The fruit stalks are up to 1.4 inches long, the terminal individual fruits are 3 inches long and 0.6 inches wide. The seeds are thread-like and about 2 inches long.
Distribution and ecology
Nepenthes jamban is known only from a single location in the province of North Sumatra, Sumatra, south of Padang Sidempuan. It grows there in terrestrial higher montane locations in mossy forests and gipfelnah in bushy vegetation.
In the same area of distribution also bongso Nepenthes, Nepenthes Nepenthes gymnamphora and lingulata occur. Nepenthes dubia shares with Nepenthes jamban the same habitat.
The liquid in the cans is extremely viscous. In the air the way pitchers were regularly numerous large insects are found as loot, such as wasps or crickets, small prey such as ants, however, are rare. As infauna live in the cans, extensive populations of mosquito larvae.
Systematics and botanical history
Nepenthes jamban was first collected in April 2005 and first described in 2006 by Ch'ien C. Lee, Hernawati and Pitra Akhriadi simultaneously with the sympatric Nepenthes lingulata. The epithet " jamban " is derived from the Indonesian word for " toilet, latrine " and refers to the striking similarity of the cans with a toilet bowl.
Nepenthes jamban belongs to a group of species to species of mainly Western Sumatra as Nepenthes dubia, Nepenthes inermis, Nepenthes Nepenthes tenuis and jacque lineae. The latter type is considered by morphological findings than the next closest Article
Whether a date is only of photographs by Andreas Wistuba known type, which is characterized by much broader cover, a separate taxon or to ask about Nepenthes jamban, is not known.