Drosera microscapa
| Drosera microscapa | ||||||||||||
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| Drosera microscapa | ||||||||||||
| Debbert |
Drosera microscapa is a carnivorous plant belonging to the genus sundew ( Drosera ). It belongs to the group of so-called dwarf sundews and is native to southwestern Australia.
description
Drosera microscapa is a perennial herbaceous plant . This forms a rosette-shaped bud close to the ground made of horizontal leaves with a diameter of about 1.5 cm. The stem axis is short and covered with few or no withered leaves from the preseason.
The stipules are translucent white and three-lobed. In contrast to Drosera occidentalis , the outer lobes are wedge-shaped, divided into two deep, equally long lobes and the middle lobe is deeply divided into two narrow wedge-shaped end lobes.
The leaf blades are circular, bowl-like deepened and 1 - 1.5 mm in diameter. The longer, up to 1.2 mm long, wedge-shaped and deep red tentacle glands are located on the edge, shorter, round-stalked ones inside. There are some glands on the underside. The leaf stalks are up to 3 - 5 mm long, 0.4 - 0.5 mm thick and taper to the leaf blade. They are round and completely hairless.
Flowering time in Central Europe (culture) is May to June. The two to four upright flower stalks are 5 to 7 mm long, have only a few glands, are slightly reddish and only light green in the upper sixth. There is only one flower on each stem. The wedge-shaped to oval sepals are green, pointed to blunt at the front, 1.5 mm long and 0.5 - 1 mm wide at the base. The surface is weakly covered with glands on the underside. The 5 white petals with a shimmering violet base are oblong to inversely ovate, 1.5 mm long and 0.5 - 1 mm wide. They are criss-crossed with strong purple veins.
The 3, 4 or 5 upright styles are lemon yellow. The scars are also lemon yellow, elongated, strongly curved inward and warty.
The formation of brood scales is typical of dwarf sundews . After the summer dormancy, Drosera microscapa forms many tiny brood scales. Exact dimensions are not known.
Distribution, habitat and status
Drosera microscapa only occurs in a small area in the extreme southwest of Australia. Here the plant thrives mainly on the south coast. Precise information on the habitat was not given in the initial description for nature conservation reasons.
Systematics
Drosera microscapa was named by Paul Debbert after the tiny flower stems ("micro" = small; "scapa" = stem). As part of a reorganization of the genus Drosera , Jan Schlauer lowered the species to the rank of a variety of Drosera occidentalis , but this view is generally not followed.
literature
- Paul Debbert: Some new species of the genera Drosera (Droseraceae) and Pinguicula (Lentibulariaceae). In: Communications from the Botanical State Collection, Munich. Vol. 30, 1991, ISSN 0006-8179 , pp. 377-379 .
Individual evidence
- ↑ Jan Schlauer: A dichotomous key to the genus Drosera L. (Droseraceae). In: Carnivorous Plant Newsletter. Vol. 25, 1996, ISSN 0190-9215 , pp. 67-88, here p. 73, ( digital version (PDF; 1 MB) ).
Web links
- ( Page no longer available , search in web archives: photo of the flowers ) and ( Page no longer available , search in web archives: photo of the plant )
