Corsia wubungu
| Corsia wubungu | ||||||||||||
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| Scientific name | ||||||||||||
| Corsia wubungu | ||||||||||||
| P.Royen |
Corsia wubungu is a loose leaf green plant type from the family of Corsiaceae .
features
Like all species of the genus also has Corsia wubungu the photosynthesis abandoned and therefore forms no chlorophyll more. Instead, it lives myco-heterotrophically on a fungus .
Corsia wubungu is a perennial plant that only grows above ground during flowering. It is completely light purple. A cylindrical stem up to 20 centimeters long sprouts from the rhizome . All parts of the plant are light purple. The foliage is 10 to 12 millimeters long, pointed and five-nerved. The bracts are the same as the leaves.
The upright single flowers are terminal and stand on flower stalks that are 1 to 2 centimeters long. Of the six petals (three tepals each in two petal circles) five are ovate-lanceolate, rounded to blunt towards the tip, 8 to 9 millimeters long, around 1.5 millimeters wide, three-veined and smooth.
The top sixth, the so-called labellum , is trapezoidal to inverted egg-shaped, rounded at the tip and greatly enlarged (8 to 10 millimeters long and 4 to 8 millimeters wide), its base is heart-shaped. From the midrib, five side ribs descend on each side. The callus is broadly heart-shaped, from its edge short, lamellar calli that become more indistinct on the outside radiate onto the labellum.
At the base, the labellum is directly fused with the approximately 1 millimeter long gynostemium . The free stamens are 1 to 1.5 millimeters long, the yellow anthers 1 millimeter long. The stylus is cylindrical and 1 to 1.5 millimeters long. The ovary is 9 to 15 millimeters long, the capsule fruit around 25 millimeters.
Distribution area
Corsia wubungu is native to the north-eastern part of New Guinea in the Torricelli Mountains at an altitude of 1035 m.
Systematics
Corsia wubungu was first described by Pieter van Royen in 1972. The species is closely related to Corsia cordata , Corsia crenata and Corsia cyclopensis . Like this, it is placed in the sessilis section , since the labellum is directly fused with the gynostemium. The type epithet is derived from wubungu , its native name in the Wapi language.
proof
- Pieter van Royen : Sertulum Papuanum 17. Corsiaceae of New Guinea and surrounding areas. In: Webbia. 27: 223-255, 1972