Byblis rorida
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| Byblis rorida | ||||||||||||
| Lowrie & Conran |
Byblis rorida is a carnivorous rainbow plant species fromthe rainbow plant family (Byblidaceae). It wasfirst describedin 1998 by Allen Lowrie and John Godfrey Conran and is one of the annual, northern Australian Byblis species, which are collectively referred to as the " Byblis liniflora complex".
features
Byblis rorida is an annual, usually unbranched, herbaceous plant, its roots are fine-grained. It reaches a height of up to 30 centimeters, young, smaller plants stand upright, larger ones lean against neighboring plants.
leaves
The leaves are 2 to 5 centimeters long, oblong and round and taper towards the end. Young leaves are almost upright, but with age they gradually droop and begin to wither. From the beginning to the end they are covered all around with stalked glands that secrete a sticky liquid. In addition to catching insects, they also serve to adhere to neighboring plants and thus keep the plant upright.
blossoms
From some leaf axils , flower stalks grow above the base of the leaves , which hardly differ from the leaves. At their tips between January and May (in the Australian summer) terminal five-fold individual flowers bloom, but only a few at the same time.
The lanceolate sepals are 3.5 to 4.5 millimeters long and 1.2 to 1.3 millimeters wide. They are densely covered with glandular hairs up to 1.5 millimeters long, which serve as a diagnostic feature to determine the species. The inverted egg-shaped petals are light purple on the inside and white on the outside, 6.5 to 10 millimeters long, 4 and 4.5 millimeters broad and deeply serrated on the outer edge. The stamens are 1 to 1.5 millimeters long. Three of the yellow anthers are 2.5 to 3 millimeters long, the other two 1.5 to 2.5 millimeters. The stylus is 4 to 4.5 millimeters long, the bilobed scar is papillary .
Fruits and seeds
The 3.5 to 4 millimeter long and 4 to 5 millimeter wide seed capsule is broadly egg-shaped and two-faced; when it dries out, it gradually tears open so that the seeds it contains fall to the ground ( barochory ). The black, 0.7 to 0.8 millimeter long seeds are provided with a honeycomb relief.
Chromosome number
The number of chromosomes is 2n = 16.
distribution
The species is found scattered in the Kimberley region in the north of Western Australia . It grows in nutrient-poor laterite and sandy soils and is often associated with Triodia pungens and sorghum species.
literature
- Allen Lowrie , John G. Conran: A Taxonomic Revision Of The Genus Byblis (Byblidaceae) In Northern Australia. In: Nuytsia . Vol. 12, No. 1, 1998, ISSN 0085-4417 , pp. 59-74 .
Individual evidence
- ↑ byblis rorida at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis