Drosera erythrogyne
| Drosera erythrogyne | ||||||||||||
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| Scientific name | ||||||||||||
| Drosera erythrogyne | ||||||||||||
| NGMarchant & Lowrie |
Drosera erythrogyne is a carnivorous plant belonging to the genus sundew ( Drosera ). The species, first described in 1992, is the largest sundew species with a reported length of over three meters.
features
Drosera erythrogyne is a perennial, herbaceous, climbing plant. The stem axis reaches lengths of up to 200 centimeters, in exceptional cases even up to 310 centimeters, which makes it the tallest sundew species in the world.
The leaves are in bundles of three along the stem axis . The central leaf has a greatly elongated petiole 3 to 4 centimeters long, the leaf blade is 2.5 millimeters long, 3 millimeters wide and sickle-shaped. The two lateral leaves are stalked much shorter with petioles of around 1 centimeter, the blade is broadly kidney-shaped. Both leaf forms are shield-shaped and have stalked glands on the leaf margins.
The inflorescence is a panicle of 30 to 60 (rarely up to 400) white flowers. The single flowers are on 1 centimeter long flower stalks. The sepals are elliptical, 4 millimeters long, 2 millimeters wide, with finely stalked glands on the edge. The petals are inverted egg-shaped, 1 centimeter long, 6 millimeters wide and weakly notched on the outermost edge. The five stamens are 6.5 millimeters long, the stamens are white, the anthers pale yellow, the pollen is whitish-translucent. The ovary is inverted egg-shaped, 1.5 millimeters long, just as wide and red. The three styluses are white, red at the base, 4 millimeters long and segmented many times. Flowering time is from September to March.
The tuber is white, round, has a diameter of around 1.5 centimeters and forms up to 15 centimeters long runners. Like all so-called "Tuberous Drosera", it retreats into this tuber at times of high temperatures and relative dryness and survives underground.
Distribution and habitat
The species is endemic to the area between Augusta and Albany in the extreme southwest of Australia. It colonizes wet, sandy peat soils or even pure peat. The very similar Drosera pallida can be found in the same areas, but prefers locations that are significantly drier during the summer dormancy. In contrast, Drosera erythrogyne is found in permanent locations.
literature
- Allen Lowrie : Carnivorous Plants of Australia. Volume 2. University of Western Australia Press, Nedlands 1989, ISBN 0-85564-300-5 , pp. 186-189.