Drosera schizandra
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| Scientific name | ||||||||||||
| Drosera schizandra | ||||||||||||
| Diels |
Drosera schizandra is a carnivorous plant belonging to the genus sundew ( Drosera ) and was discovered by St. Johnson in 1891. It was described as a separate species under the name Drosera schizandra in 1906 by Ludwig Diels .
description
leaves
The pale green to dark green leaves of this perennial herbaceous plant reach a size of 8 to 10 cm in length and 4 to 5 cm in width and have only very short, fine tentacles. The plant forms a basal rosette and is a very poor insect trap. The catch leaves also have pronounced, visible ribs upwards. The plant is green in its natural habitat - in isolated cases plants have also been found that have received a little more light and are red in color.
blossoms
Compared to its sisters, Drosera schizandra produces rather large flowers with a diameter of over 1 cm. The petals are 5.5 mm long and 4 mm wide, the sepals 4 mm long and 1.8 mm wide. The natural flower color is a strong red. 10 to 25 flowers are formed per inflorescence (up to 14 cm high, hairy). Flowering time is at the beginning of summer in November to July.
root
The roots are fleshy and also serve to form runners and to withstand drought.
Chromosome number
The number of chromosomes is 2n = 30.
Distribution and habitat
The species is endemic to the rainforests of the lower slopes of Mount Bartle Frere in northwest Queensland , Australia and occurs there at an altitude of 300–600 m. It grows there under very shady conditions on a moist, mostly sandy subsoil. Compared to the other two Queensland drosera species, it prefers the shadiest habitats.
Multiplication
Thanks to its root runners, the plant can spread without producing seeds and often forms large clone colonies. Occasionally, offshoots are also formed on the leaves.
etymology
The name schizandra is derived from the Greek schistos (divided) and andrus (male) and is a reference to the divided anthers of this species.
literature
- Ludwig Diels : Droseraceae (= The Plant Kingdom . 26 = 4, 112, ZDB -ID 846151-x ). Engelmann, Leipzig 1906, p. 109.
- Wilhelm Barthlott , Stefan Porembski, Rüdiger Seine, Inge Theisen: Carnivores. Biology and culture of carnivorous plants. Eugen Ulmer GmbH & Co., Stuttgart 2004, ISBN 3-8001-4144-2 .
Individual evidence
- ^ A b c d e Richard Nunn, Greg Bourke: An account of Drosera section Prolifera . In: International Carnivorous Plant Society (Ed.): Carnivorus Plants Newsletter . tape 46 , no. 3 , September 2017, p. 97-98 ( carnivorousplants.org [PDF]).
- ↑ Drosera schizandra at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
