Utricularia sandersonii
| Utricularia sandersonii | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
blossom |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Utricularia sandersonii | ||||||||||||
| Olive. |
Utricularia sandersonii is a carnivorous plant from the genus of the water hoses in the section Calpidisca . It was first described by Daniel Oliver in 1867 .
description
Utricularia sandersonii is a lithophytic , perennial species that grows on wet rocks and is now a popular home plant, particularly because of its flowering ability and uncomplicated culture. It is directly related to Utricularia livida and was previously classified as Utricularia aurea var. Multiflora .
Stolons and traps
The plant forms both aboveground and subterranean stolons , which often reach up to 10 cm deep into the earth. On the stolons there are mostly 1–1.5 millimeter large trapping bladders underground. The traps have tentacle-shaped appendages around their entrance.
leaves
From the stolons grow the light green, spoon-shaped, round-edged leaves , which can reach a width of 1 to 6 millimeters and a length of up to 15 mm. With its leaves, the plant forms a dense green lawn with a height of 3 to 6 millimeters all year round.
Flowers, fruits and seeds
In the natural habitat, the plant blooms in spring (July to September) and in autumn (January to May). A flower stem reaches a length of up to 5 centimeters and carries up to 7 individual flowers, each of which is 6 millimeters wide and 13 millimeters long. The flowers carry a very light blue ( wisteria - or even Wistarien Blue).
The flower can be divided into upper and lower lip, with the upper lip split into two narrow parts, each characterized by a purple stripe in the middle. The lower lip is twice as long as the upper lip and forms a flat, wide apron; on the lower part it forms a semicircular, wavy edge. The yellow-green palate is framed in purple.
The seeds of the plant are light germinators , are egg-shaped and up to 0.8 millimeters long.
Distribution and habitat
Utricularia sandersonii is endemic to the subtropical east of South Africa and occurs there in the provinces of KwaZulu-Natal and Eastern Cape , where they can be found directly on wet rocks at an altitude of 210–1200 m above sea level. NN grows.
The temperatures there are around 20 ° C in winter and up to 35 ° C in summer. The plant is nevertheless relatively cold-resistant and can survive cold winters of up to 5 ° C.
A population from Australia has also been known since 2001, where the species grows on vertical wet sandstone rocks. The discoverers point out that this population may not be of natural origin, as the species has no mechanisms of long-range dispersal and the morphology of the plants studied is similar to the most common form in culture.
swell
karnivoren-in-kultur.de - U.sandersonii
further reading
- Peter Taylor: The Genus Utricularia. A Taxonomic Monograph (= Kew Bulletin. Additional Series. 14). Royal Botanic Gardens - Kew, London 1989, ISBN 0-947643-72-9 .
Web links
Individual evidence
- ↑ Threatened Species Programs | SANBI Red List of South African Plants. Accessed August 13, 2018 .
- ↑ Barry Conn, Elizabeth A. Brown, Alan T. Fairley: Utricularia sandersonii (Lentibulariaceae), a new record for Australia . January 1, 2004 ( researchgate.net [accessed August 10, 2018]).