Drosera pulchella
| Drosera pulchella | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drosera pulchella , flower |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Drosera pulchella | ||||||||||||
| Clay. |
Drosera pulchella is a carnivorous plant of the genus sundew ( Drosera ) and the group dwarf sundew and is native to southwestern Australia.
description
Drosera pulchella is a perennial herbaceous plant . This forms a flat, rosette-shaped bud lying on the ground from leaves with a diameter of about 3 cm. The stem axis is short and covered with few or no withered leaves from the preseason.
The bud of the stipules is conical , 6 mm long and 2.5 mm in diameter at the base. The stipules themselves are 6 mm long, 3 mm wide, 2 mm wide at the base and three-lobed. The middle lobe is divided into 3 segments and is 3.5 mm long. The central segment is simply fringed. The outer pair is divided into 2 fringes at the top and is 5 mm long. The outer edge is serrated and the tip is divided into 2 short fringes.
The leaf blades are approximately circular, 4.5 mm long and 4 mm wide. The longer tentacle glands are on the edge, the shorter ones on the inside. There are also some glands on the underside. The leaf stalks are up to 8.5 mm long, 1 mm wide at the base, expand to 2 mm in the middle and taper abruptly to 1 mm at the leaf blade. They are half lanceolate and have a few glands on the edges.
Flowering time is December to January. The one to four flower stalks are 4 cm long and completely covered with glands. The inflorescence is a coil of 3 to 8 flowers on approximately 2.5 mm long pedicels. The broadly inverted egg-shaped sepals are 2 mm long and 2 mm wide. The tips are irregularly toothed and covered with a few white, cylindrical, red-headed glands. The petals are pale pink, dark pink, white or orange, inverted ovoid, 4.5 mm long and 3.5 mm wide.
The five stamens are 2 mm long. The threads are white, the anthers are yellow, and the pollen is pale yellow. The pale green ovary is spherical, sunken, 0.8 mm long and 1.1 mm in diameter. The 5 white, horizontally stretched styluses are 1 to 1.5 mm long and 0.1 mm in diameter. The scars are white, sickle-shaped, 1 to 1.5 mm long and slightly wider than the style.
The formation of brood scales is typical for dwarf sundews : the elliptical, 0.4 mm thick brood scales are formed in large numbers from late November to early December and are approx. 1.2 mm long and 0.8 mm wide.
Distribution, habitat and status
Drosera pulchella only occurs in a small area in the extreme southwest of Australia. The plant thrives there on sand, peaty sand, peat, laterite and clay soils on the edges of lakes, swamps and rivers in forests or open land. Known populations are found near Perth , Augusta, and Albany . The species is common in the southwest corner of Western Australia. It can be found on many different soils, but only in places that are moist all year round. Near the Scott River region, east of Augusta, forms with strikingly colored flowers can be found.
Systematics
The name pulchella comes from Latin and means “beautiful sundew” (pulchellus = beautiful, charming). Drosera pulchella is easy to recognize by its very broad petioles. The species was described by JGC Lehmann as early as 1844.
literature
- Allen Lowrie: Carnivorous Plants of Australia. Volume 2. University of Western Australia Press, Nedlands 1989, ISBN 0-85564-300-5 , p. 142.
