Drosera sargentii
| Drosera sargentii | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drosera sargentii , group (in culture) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Drosera sargentii | ||||||||||||
| NGMarchant & Lowrie |
Drosera sargentii is a carnivorous species of the sundew genus. It belongs to the group of dwarf sundews and was described as a species in 1992.
description
Drosera sargentii is a small, perennial, herbaceous plant with fine, fibrous roots. The rosette-shaped growing species reaches a diameter of 1.5 cm. The stem axis is up to 2 cm long and covered with withered leaves from the preseason.
The bud of the stipules is conical, 6 mm long and 4 mm in diameter with extremely long hairs. The stipules themselves are 1.5 mm long, 1.7 mm wide and three-lobed short. The middle lobe has 3 short fringes.
The 20 to 50 leaf blades are circular and have a diameter of up to 0.8 mm. The petioles are up to 3.8 mm long, 0.5 mm wide at the base, keep this width up to a third of the petiole and taper to 0.2 mm at the leaf blade.
Flowering time is from November to December. The 1 - 2 flower stems are up to 5 cm long and hairless. The inflorescence is a coil of 20 to 40 flowers on about 1 mm long pedicels. The smooth, inverted egg-shaped sepals are 1.5 mm long and 0.9 mm wide. The tips are somewhat serrated. The white petals are inverted ovate, 3 mm long and 2 mm wide.
The threads are white, the anthers and pollen are yellow. The ovary is egg-shaped and 0.4 mm long. The 3 white, semi-upright styluses are 0.3 mm long and 0.1 mm in diameter. The scars, which are also white, sickle-shaped, are 1.1 mm long and 0.1 mm in diameter at the base.
Distribution, habitat and status
Drosera sargentii is a common species in the coastal areas between Esperance and Cape Le Grand National Park. It thrives there on deep, white sandy soils on heathland. There it grows together with the widespread, white-flowered species Drosera scorpioides .
The species is common and it is not assumed to be endangered.
Systematics
Drosera parvula is considered to be the most closely related species . The name "sargentii" was given in honor of the pharmacist Oswald H. Sargent who, among other things, examined the Drosera in this area.
Drosera sargentii is a dwarf sundew and as such belongs to the section Bryastrum in the subgenus Drosera . This species was found in a non-flowering state by Allen Lowrie and Steve Rose in 1988.
literature
- Allen Lowrie, Neville Marchant: Four new Drosera taxa from south western Australia. In: Nuytsia . Vol. 8, No. 3, 1992, pp. 323-332, here p. 330, ( digitized version (PDF; 1.1 MB) ).
