Drosera callistos
Drosera callistos, flower
Drosera callistos is a carnivorous plant in the genus of Sonnentaue (Drosera ).
Description
Drosera callistos is a rosette -forming perennial herbaceous plant that reaches a diameter of up to 2.3 cm. The shoot axis is 5 mm long and covered with the withered leaves of the previous season.
The bud of the stipules is broadly ovate, bristly, 4 mm long and 4 mm in diameter at the base. The stipules themselves are 4.5 mm long, 3 mm wide, 1.1 mm wide at the base and three-lobed. The middle lobe is divided into 3 segments. Each of these segments is again divided at the tip into two fringes. The edges of the outer lobes are entire, divided the tips into 2 short fringe. Near the top, there is another fringe, which is longer than the central lobe.
The leaf blades are broadly elliptic, 2.5 mm long and 2 mm wide. The longer tentacles glands located at the edge, shorter in the interior. The underside is bare. The petioles are up to 6 mm long, 1 mm wide at the base and taper to 0.6 mm on the leaf blade. They are busy lanceolate and with few glands.
Flowering period October to November. The inflorescence axis is up to 7 cm long and bedrüst sparse at the base. The density of the glands increases towards the tip. The inflorescence is a wrap from 6 to 12 flowers on about 2 mm long pedicles. The egg-shaped sepals are 3.5 mm long and 2 mm wide. The margins are entire, and the tips are serrated irregular. The entire surface is covered with a few cylindrical glands. The metallic -orange, black at the base of the petals are obovate, 9 mm long and 6 mm wide.
The five stamens are 2.4 mm long. The stamens are black brown, the anther white and the yellow pollen. The black- brown ovary is very broad obovate, 0.7 mm long and 1.1 mm in diameter. The 3 black brown, horizontal stylus are 1 mm long. The scars are black brown, horizontal, 2 mm long, prosper in the middle and tapering slightly to rounded tip.
Typical of dwarf Sonnentaue is the formation of Brutschuppen: The elliptical, 1 mm thick Brutschuppen are formed in late November to early December in large numbers and have a length of about 1.7 mm and a width of 1.5 mm.
Distribution, habitat and status
Drosera callistos is endemic in South Australia, near Gidgegannup, The Lakes and the state forest of Brookton Hay. It grows there in heavy, covered with laterite sandy soils or bodies with pure sand, surrounded by laterite.
System
The name of Drosera callistos derived ( = beautiful callis ) from the Latin from. From Allen Lowrie states: "The epithet Refers to the overall beauty of the plans. "
If it does not bloom, this species can be easily confused with Drosera sewelliae. These two species have similar flower colors, but can be easily distinguished on closer inspection. Drosera leucoblasta is also very similar, but has a pale, red spot in the center of the flower and never grows in the same habitat as Drosera callistos.
Swell
- Allen Lowrie: Carnivorous Plants of Australia, Vol 2, English, Nedlands, Western Australia, ISBN 0855643005, 1989