Drosera pygmaea
Drosera pygmaea, habitus
Drosera pygmaea is a carnivorous plant in the genus of Sonnentaue (Drosera ). The first description was in 1824 by Augustin Pyramus de Candolle.
Description
Drosera pygmaea is a perennial herbaceous plant. This makes a basal, compact, rosette-shaped bud from leaves with a diameter of about 2 cm. The shoot axis is short and covered only with few or no withered leaves of the previous season.
The bud the Stipules ovate, villous, 3.5 mm long and 3 mm in diameter at the base. The stipules themselves are 3 mm long, 1.7 mm wide, 0.6 mm wide at the base and three-lobed. The middle lobe is divided into three pointed segments. The edges of the lateral lobes are entire, and divided at the tip into two top segments. The outer lobes are the same length as the middle lobe.
The leaf blades are circular, dented very deep and 1.5 mm in diameter. The longer tentacles glands located at the edge, shorter in the interior. The underside is bare. The leaf stalks are 6 mm long, 0.3 mm long at the base, expand shortly after the base to 0.5 mm and taper to 0.2 mm on the leaf blade. They are 0.2 mm thick, partially flattened semi- circular and completely hairless.
Bloom time is from September to January. The one to four inflorescence stems are covered up to 2.5 cm long and fully loaded with some tiny glands. Each peduncle bears a single flower without bracteoles. The four narrow ovate sepals are 2.7 mm long and 1.3 mm wide. The bottom edges are entire, the tips and the top edges are cut irregularly. The surface is hairless. The four petals are white, obovate with a wedge-shaped fingers at the base, 3.3 mm long and 2.5 mm wide. The tips and the margins are entire.
The four stamens are 1.7 mm long. The stamens, the anthers and the pollen sin white. The white ovary is obovate, 0.7 mm long and 0.7 mm in diameter. The four white pen are bent with the scars Section 1 mm long and slightly upward. The scars are club-shaped and have a pimply surface.
Typical of dwarf Sonnentaue is the formation of Brutschuppen: The very broad ovate, 0.15 mm thick Brutschuppen are formed in late November to early December in large numbers and have a length of about 0.6 mm and a width of 0.6 mm.
Dissemination
Drosera pygmaea has its main distribution on the southeast coast of Australia ( Tasmania from the south along past all the way up to Queensland ). It grows on sandy soils that cover the sandstone cliffs. It thrives at the edges of swamps and low sinks on peaty sandy soils.
Known populations are found in the states of South Australia, Queensland, New South Wales, Victoria, Tasmania. The plant is also found sporadically in the southwest ( at Albany ) and New Zealand (West Coast of the two main islands ). This Drosera pygmaea is the only dwarf sundew, which grows outside Australia.
System
The name ' " pygmaea " ' derives from the Latin pygmaeus, meaning " dwarf ". It is easy to see from the four -petalled flowers. The populations on the west coast of Australia are not exactly like populations on the east coast. So far, however, not regarded as a subspecies.