Corsia wiakabui
| Corsia wiakabui | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Corsia wiakabui | ||||||||||||
| ( WNTakeuchi & Pipoly ) DLJones & B.Gray |
Corsia wiakabui is a loose leaf green plant type from the family of Corsiaceae . The species is only known from New Ireland .
features
Like all species of the genus also has Corsia wiakabui the photosynthesis abandoned and therefore forms no chlorophyll more. Instead, it lives myco-heterotrophically on a mycorrhizal fungus that lives in symbiosis with another plant.
Corsia wiakabui is a perennial plant , hairless in all parts and red-brown, which only grows above ground during flowering. From the rhizome sprout up to 13 centimeters long, in cross-section cylindrical, slightly grooved stems . The nodes are far apart.
The four to five spirally arranged leaves facing the outer end of the plant enclose the stem at their base. The blade is linearly shaped, tapering to a point, folded lengthways to one another or rolled up broadly at the edges. The leaves are paper-like, 9 to 17 millimeters long and 4 to 6 millimeters wide and have six nerves; the veins are visible as a dark mark on the leaf.
The upright, hermaphrodite single flowers are terminal. Of the six petals (three tepals each in two petal circles ) five are of the same shape. They are curved towards the base of the plant, lanceolate, 4 millimeters long (1.5 millimeters of which go to the tapered tip) and 3 millimeters wide.
The topmost sixth leaf, the so-called labellum , is fan-shaped, has a blunt tip at the extreme end and is 16 to 19 millimeters long and 20 to 23 millimeters wide compared to the other petals. On approach is to Labellum over a relatively Labellum to 4 millimeters raised ridge of callus tissue on gynostemium grown ( "pinned"). It is traversed by a total of twelve multiple branched side ribs .
The six stamens are in two circles opposite the petals. The stamens are similar to the stylus and are 0.6 to 0.7 millimeters long. The two anthers are oblong and round and 1.2 millimeters long, the stylus is simple, cylindrical and around 1 millimeter long.
Distribution area
Corsia wiakabui has only been collected once, the holotype comes from New Ireland in the Hans Meyer Mountains at an altitude of 750 meters in the deciduous humus of premontaneous primary forests . The stocks were found immediately after rainfalls, but they were already withdrawn on subsequent visits.
Systematics
It was first described in 1998 by Wayne N. Takeuchi and John J. Pipoly III as the variety Corsia purpurata var. Wiakabui . Ten years later, it was given the rank of a species by David Lloyd Jones and Bruce Gray . The epithet wiakabui honors the Papuan botanist Joseph Wiakabu .
proof
- ^ A b c d e f g W. Takeuchi, John J. Pipoly III: New flowering plants from southern New Ireland, Papua New Guinea. In: Sida, 18 (1), pp. 164-167, 1998
- ↑ DLJones, B.Gray: Corsia dispar DLJones & B.Gray (Corsiaceae), a new species from Australia, and a new combination in Corsia for a New Guinea taxon. In: Austrobaileya 7 (4): 719-721, 2008