Drosera platypoda
Drosera platypoda, inflorescence
Drosera platypoda is a carnivorous plant in the genus Sundew ( Drosera ). It belongs to the so-called " Knollendrosera ", a group of Sonnentauen from south-western Western Australia, which forms tubers as outlasting.
Description
Drosera platypoda is a perennial, herbaceous plant that grows out of an orange, inversely egg-shaped and slightly laterally flattened, up to 10 cm long and 7 mm in diameter measured tuber to the brown as remnants of previous years, papery sheaths and old root fibers lie. The underground runners reach up to 18 centimeters in length, but rarely extend completely horizontal, under good conditions form on them daughter tubers.
The 15 to 20 centimeters high, unbranched and unusual for the single - section stem is hairless and stands upright on its approach is a flat basal rosette. The leaves of this rose are stalked, the stalk reaches a length of 5-9 mm, is flattened ( 0.5 to 2 mm thick) and widened ( 1-3 mm). The upper side of the leaves towards the end occupied at the edge with a little longer, shorter muzzle centered tentacles. The leaf blades are fan-shaped, 2.5 to 5 mm long and 4-9 mm wide. The leaves are alternate on the stem arranged, but bent across clearly in shape and size of the same shape as those of the rosette along its length towards the tip and increasingly upright, so that there is a conical habit.
Flowering period is from August to November and summer bush fires usually solve mass of flowers. The hairless inflorescence axis bearing a simple raceme or a two-to four -branched corymb, usually terminally and 7 to 12 inches long and 8 to 35 flowers. The flower stems are hairless and 5 to 10 millimeters long. The sepals are green, broadly ovate and pointed, and reach a length of 3.5 to 4.5 millimeters and a width of 1.5 to 3 mm, the edges are simple, sometimes weakly serrated at the top, covered tightly with black dots and finely papillose. The petals are obovate, obtuse and slightly notched at the tip. Its basic color is white, they are 7.5 to 10 millimeters long and 5-8 mm wide. The five stamens are 2.5 to 3 millimeters long and completely white, the pollen is yellow. The dark red ovary is approximately circular, papillose, just 1 millimeter long and has a diameter of about zweigelappt 1.8 millimeters, the three carpels in the heyday. The three pens are white and tinged with red at the base, they are a total of about 1.5 millimeters long and divided at the base into many sections, repeated occasionally. The scars are rounded and slightly thickened.
The capsule fruit is obovate, with a diameter of 3 to 3.5 millimeters and contains around 100 dark brown, irregular, but wound shaped seeds, which measure 0.5 to 0.7 mm long and 0.4 to 0.5 mm in diameter and are provided with reticulate, irregularly ribbed surface.
Dissemination, locations, hazard
The species is native to Western Australia in the space between Manjimup, Scott River and Cape Riche. The locations are wet in winter and in summer completely dry sandy soils in heathland under low bushes or in the winter wet Torfsandböden on slopes of stony clay. The stocks can thereby include numerous individuals. In their area of distribution, the species is common and partly at home in National Parks, so it is considered safely.
System
Drosera platypoda was first described in 1854 by Nikolai Turtschaninow, the specific epithet means as much as " flat-footed " and refers to the flat on the floor resting rosette from which the stem grows. Drosera platypoda is part of section Stoloniferae in the subgenus Ergaleium already Turczaninow had been classified in the former Unterrreihe.
Molecular genetic studies showed Drosera platypoda as a sister clade of Drosera stolonifera and Drosera prostratoscaposa.
Evidence
- Allen Lowrie: A taxonomic revision of Drosera section stolonifera ( Droseraceae ), from south -west Western Australia. In: Nuytsia. 15:3, 2005, pp. 355-393