Drosera adelae
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Drosera adelae |
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| F. Garbage. |
Drosera adelae is a carnivorous plant from the genus sundew ( Drosera ). Together with Drosera prolifera and Drosera schizandra, it formsthe group of "Queensland Drosera"due to the close genetic relationship, the closely spaced distribution area in the northeast of Queensland and similar growth conditions.
description
Drosera adelae is an upright, herbaceous perennial plant that grows up to 25 centimeters high and forms a loose, open rosette with a short stem axis . It grows quickly and has long, highly branched hair roots. It forms runners through which the plant spreads and multiplies. The number of chromosomes in the species is 2n = 30.
leaves
The narrow-lanceolate, 20 to 25 centimeters long and up to 2 cm wide leaves of Drosera adelae stand almost upright as young leaves on extremely short, hairless petioles and sink more and more with age. The leaves of young plants are inversely ovate or elliptical.
The leaf has a pronounced central rib over its entire length and is provided on its upper side with the species-typical tentacles, the underside is hairless. The leaves are more passive when caught than other sundew species, they do not roll over the prey. In general, the plant is green - in strong light the plant turns dark red.
blossom
The plant blooms in the Australian winter or spring between June and November. The inflorescence reaches a height of up to 35 cm, at its upper end is a loosely hairy coil of 10 to 20 flowers , accompanied by opposite, short, linear bracts. Each individual flower is almost 10 mm in size, red, red-orange or creamy white and stands on a stalk up to 5 mm long. The flowers - a special feature of the genus - have a star-shaped appearance, that is, they consist of five lanceolate petals 2.5 mm long and 1.2 mm wide, as well as five slightly shorter and narrower sepals .
Chromosome number
The number of chromosomes is 2n = 28 or 30.
distribution
Drosera adelae is found in the virgin forests of northwest Queensland in Australia , more precisely in Rockingham Bay, at Dalrymple's Creek and on Hinchinbrook Island in Hinchinbrook National Park, south of the city of Cairns . It grows there in the mountain rainforest in mosses between rocks on river banks on sandy soils.
literature
- Ludwig Diels : Droseraceae (= The Plant Kingdom . 26 = 4, 112, ZDB -ID 846151-x ). Engelmann, Leipzig 1906, p. 109, ( the family's only monograph , partly out of date).
- Allen Lowrie : Carnivorous Plants of Australia. Volume 1-3. University of Western Australia Press, Nedlands 1987-1998.
Individual evidence
- ^ Drosera adelae at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
