Drosera paradoxa
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Drosera paradoxa |
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| Lowrie |
Drosera paradoxa is a carnivorous plant from the sundew family(Droseraceae). It occurs exclusively in the tropical north of Australia.
description
In Drosera paradoxa is perennial, herbaceous plants with roots and fine-fiber terminated at age rosettes on woody stems that can be as thick as 30 centimeters high and 1.5 millimeters. The foliage below the active rosette is obsolete and the plant has fine white hairs in various densities on the flower stalks, the underside of the blade, the flower stalks and the sepals.
The inner young leaves stand upright, the outer ones stand horizontally to the side or hang down, the petioles are linear, at flowering time 20 to 35 millimeters long, 0.4 to 0.6 millimeters wide at the base, 0.2 to 0.4 millimeters broad in the middle and at the base of the blade, tapering to 0.1 to 0.15 millimeters wide, sparsely hairy. The approximately round leaf spreads are 2 to 3 millimeters long, 2.5 to 3 millimeters wide, their upper side is covered with slightly longer, centrally shorter catching tentacles, their underside densely covered with long, woolly, white hair.
The one to five rust-colored and densely hairy inflorescence axes arise from or below the rosette, are 20 to 40 centimeters long and carry 50 to 70 or more flowers in a cluster . The flower stalks are 0.5 to 1.5 millimeters long and droop when ripe. The sepals are elliptical, elongated round or vice versa lanceolate, 2 to 3.5 millimeters long and 0.8 to 1 millimeter wide. The petals are pink or white, with or without a red sap mark or cherry red, inverted egg-shaped and 4 to 12 millimeters long and 2.7 to 11 millimeters wide.
The stamens are 2 to 3 millimeters long. The ovary is inverted ovoid, 0.5 millimeters long, 0.7 millimeters in diameter at flowering time and with three carpels . The three styluses are 1.1 millimeters long, including the stigma , with multiple branches at the top, each branch ending in a club-shaped stigma.
The capsule fruit is inverted egg-shaped with a diameter of 0.7 to 0.8 millimeters and contains around 15 black, elliptical and reticulated seeds that are 0.3 to 0.35 millimeters long and 0.2 millimeters in diameter.
Distribution and location
Drosera paradoxa is widespread in the tropical north of Australia from the Beverley Springs in Western Australia over the Kimberleys to Arnhem Land and in the Kakadu National Park in the Northern Territory . There it grows on sandy soils in and on seasonally dry river beds that reach considerable depths during the rainy season.
Systematics
The closest related species is Drosera petiolaris , which however does not form stems and has significantly fewer flowers. The type epithet refers to the paradoxical observations in the early days of research, during which the different stages of the plants did not give a clear picture of their life cycle. It was first described in 1997 by Allen Lowrie . The species belongs to the so-called "Petiolaris complex", which forms the Lasiocephala section of the genus.
literature
- Allen Lowrie: Drosera paradoxa (Droseraceae), a new species from northern Australia. In: Nuytsia . Vol. 11, No. 3, 1997, pp. 347-351 .
