Drosera arcturi

Drosera arcturi
	Drosera arcturi , Tasmania
Systematics
	Eudicotyledons
	Nuclear eudicotyledons
Order :	Clove-like (Caryophyllales)
Family :	Sundew family (Droseraceae)
Genre :	Sundew ( Drosera )
Type :	Drosera arcturi
Scientific name
	Drosera arcturi
	Hook.

Drosera arcturi is a carnivorous plant from the genus sundew ( Drosera ). The snow-resistant species is only known from Southeast Australia and New Zealand.

description

In Drosera arcturi is an upright growing species with fibrous roots. The stem axis reaches a height of up to 7 centimeters above ground, the subterranean stem can be up to 25 centimeters long and is surrounded by the roots of old, dead leaves. The narrow, elongated-round to narrowly egg-shaped leaves are 1.2 to 7 centimeters long and only have tentacles on the upper half. The first two leaves of the annual new shoot are non-carnivorous, before they then develop further leaves with tentacles.

The flower stem of the plant is around seven centimeters high and has only one, rarely two white flowers with yellow anthers , which, unlike many other sundew species, are open for several days.

distribution

Drosera arcturi is native to southeast Australia ( Victoria , New South Wales , Tasmania ) and New Zealand . It usually grows in Sphagnum swamps of alpine heathland and on black peat soils on the edge of small rivers in subalpine regions, but in Tasmania it also descends to almost sea level in isolated cases.

With the onset of winter, the plant dies above ground. In higher regions, it spends the winter under a closed blanket of snow.

Systematics

The species was first described by William Jackson Hooker in 1834 and forms an independent section within the genus Arcturi in the subgenus Drosera . Together with its closest relative, the South African king sundew ( Drosera regia ), it is considered to be the most basic sundew species.

proof

↑ ^a ^b ^c ^d Allen Lowrie : Carnivorous. Plants of Australia. Volume 3. University of Western Australia Press, Nedlands 1998, ISBN 1-875560-59-9 , pp. 136-139.
↑ Fernando Rivadavia, Katsuhiko Kondo, Masahiro Kato, Mitsuyasu Hasebe: Phylogeny of the sundews, Drosera (Droseraceae), based on chloroplast rbcL and nuclear 18S ribosomal DNA sequences. In: American Journal of Botany. Vol. 90, No. 1, 2003, ISSN 0002-9122 , pp. 123-130, doi : 10.3732 / ajb.90.1.123 .

Web links

Commons : Drosera arcturi - collection of images, videos and audio files

[low-1] Allen Lowrie : Carnivorous. Plants of Australia. Volume 3. University of Western Australia Press, Nedlands 1998, ISBN 1-875560-59-9 , pp. 136-139.

[phyl-2] Fernando Rivadavia, Katsuhiko Kondo, Masahiro Kato, Mitsuyasu Hasebe: Phylogeny of the sundews, Drosera (Droseraceae), based on chloroplast rbcL and nuclear 18S ribosomal DNA sequences. In: American Journal of Botany. Vol. 90, No. 1, 2003, ISSN 0002-9122 , pp. 123-130, doi : 10.3732 / ajb.90.1.123 .