Drosera spatulata

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Drosera spatulata
Drosera spatulata (23654485121) .jpg

Drosera spatulata

Systematics
Eudicotyledons
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Sundew family (Droseraceae)
Genre : Sundew ( Drosera )
Type : Drosera spatulata
Scientific name
Drosera spatulata
Labill.

Drosera spatulata is a carnivorous plant of the genus sundew (Drosera) and wasfirst describedin 1904 by Jacques Julien Houtton de La Billardière .

description

A flat, native rosette with a diameter of about 1.5 to 5 centimeters and spatulate leaves characterize the appearance of this carnivorous plant . It is quite variable in appearance and exists in different subspecies, so that it is sometimes wrongly determined. The pink or white flower grows on a flower stalk about 20 centimeters long.

The number of chromosomes is 2n = 20, 40 or 60.

distribution

The plant is widespread - from Japan , Korea , Taiwan , Southeast China via Borneo , Papua New Guinea and the Philippines to Southeast Australia , Tasmania and New Zealand as well as Micronesia . Drosera spatulata is quite undemanding in terms of climate - it occurs from temperate to subtropical to tropical climates.

Multiplication

Some forms occur in areas with a short growing season or changeable climate. These are genetically adapted to this in that they grow relatively quickly and bloom very small. It often only takes half a year from the germinating seed to the fully grown, flowering plant.

Systematics

Of the numerous forms, the following have been described and are generally recognized:

  • Drosera spatulata var. Bakoensis A. Fleischm. & Chi.C. Lee : rounded to spatulate leaves, smaller inflorescences with fewer flowers and larger, pale pink petals. The plants are only 15-20 mm in diameter and are short-lived. They only occur in the Bako National Park on Borneo , where they are separated from the nearest occurrence of the species by about 1050 km.
  • Drosera spatulata var. Gympiensis R.A. Gibson & I.Snyder : small, hairy inflorescences with fewer flowers, but larger, dark pink petals. It occurs on the Australian coast between Gympie and Fraser Island .
  • Drosera spatulata var. Spatulata : occurs in the entire distribution area and is very variable. In the area from Japan to Tasmania there are forms with elongated, spatulate to wedge-shaped leaves on short petioles, on New Zealand the leaves are rounded on long petioles.
  • Drosera × tokaiensis ( Komiya & Shibata ) T.Nakam. & K.Ueda : occurs in Japan and is a hexaploid species of hybrid origin. The parents were a tetraploid D. spatulata and a diploid D. rotundifolia . F1 triploid hybrids have also been found. The leaves are more rounded and larger than all varieties with a similar leaf shape. The flowers are pink.

The taxonomic classification of many other forms is unclear. One speaks therefore of a Drosera spatulata complex, which also includes the closely related species Drosera oblanceolata , Drosera ultramafica and Drosera neocaledonica . The hybrid Drosera oblanceolata x spatulata is widespread around Hong Kong , where both species grow.

  • Drosera spatulata var. Bakoensis , Sarawak

  • Drosera spatulata in Mutsuzawa, Chiba , Japan

  • Drosera spatulata . Dharawal Nature Reserve, New South Wales, Australia

  • Drosera spatulata in Whakapapa, Waikato (New Zealand)

  • Drosera tokaiensis , Toyohashi , Aichi Prefecture, Japan.

literature

  • Ludwig Diels : Droseraceae (= The Plant Kingdom . 26 = 4, 112, ZDB -ID 846151-x ). Engelmann, Leipzig 1906, (The book contains the most important monograph of the Drosera genus .).
  • 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

  1. ↑ Drosera spatulata at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  2. ^ Andreas Fleischmann, Ch'ien C. Lee: A new variety of Drosera spatulata (Droseraceae) from Sarawak, Borneo . In: International Carnivorous Plant Society (ed.): Carnivorous Plant Newsletter . tape 38 , no. 1 , 2009, p. 4-9 ( carnivorousplants.org [PDF]).
  3. ↑ Drosera spatulata Species Complex | ICPS. Retrieved October 9, 2018 .

Web links

Commons : Drosera spatulata  - album with pictures, videos and audio files