Corsia clypeata
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| Scientific name | ||||||||||||
| Corsia clypeata | ||||||||||||
| P.Royen |
Corsia clypeata is a loose leaf green plant type from the family of Corsiaceae .
features
Like all species of the genus also has Corsia clypeata the photosynthesis abandoned and therefore forms no chlorophyll more. Instead, it lives myco-heterotrophically on a fungus .
Corsia clypeata is a perennial plant that only grows above ground during flowering. It is completely purple. A cylindrical stem up to 15 centimeters long sprouts from the rhizome . The foliage is 6 to 12 millimeters long, pointed and five-nerved. The bracts are the same as the leaves, but a little longer.
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 linear, blunt towards the tip, 5 to 6.5 millimeters long and 1 to 1.5 millimeters wide, one or three-veined and smooth.
The top sixth, the so-called labellum , is smooth, broadly egg-shaped, tapering to a point and greatly enlarged (around 9 millimeters long and 8 millimeters wide), its base is heart-shaped. Seven side ribs descend from the center rib on each side. The callus is shield-like, kidney-shaped, 3.5 millimeters long, 4 millimeters wide and smooth. Additional calluses are completely missing.
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 style is 1 millimeter, the ovary 12 millimeters long and finely spotted, the capsule fruit 9 millimeters long.
Distribution area
Corsia clypeata was only picked up once in Papua New Guinea in the Krätke Mountains on Mount Elandora at an altitude of 2130 m.
Systematics
Corsia clypeata was first described by Pieter van Royen in 1972. It is the only species of the genus that lacks any additional calli, but it is still close to Corsia ornata and Corsia arfakensis . Like this, it is placed in the sessilis section , since the labellum is directly fused with the gynostemium.
proof
- P. Van Royen: Sertulum Papuanum 17. Corsiaceae of New Guinea and surrounding areas. In: Webbia. 27: 223-255, 1972