Corsia huonensis
| Corsia huonensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Corsia huonensis | ||||||||||||
| P.Royen |
Corsia huonensis is a loose leaf green plant type from the family of Corsiaceae .
features
Like all species of the genus also has Corsia huonensis the photosynthesis abandoned and therefore forms no chlorophyll more. Instead, it lives myco-heterotrophically on a fungus .
Corsia huonensis is a perennial plant that only grows above ground during flowering. A cylindrical stem up to 25 centimeters long sprouts from the rhizome . The foliage is 8 to 15 millimeters long, pointed and five-nerved. The bracts are the same as the leaves.
The upright individual flowers are pale purple with dark purple stripes, terminal and are on flower stalks that are 1.2 to 5 inches long and smooth. Of the six petals (three tepals each in two petal circles) five are lanceolate-linear, pointed, 12 to 14 millimeters long and 1.5 millimeters wide, three-veined and smooth.
The top sixth, the so-called labellum , is narrowly heart-shaped to ovoid, pointed, smooth and greatly enlarged (12 to 15 millimeters long and 7.5 to 9 millimeters wide), its base is heart-shaped. Seven or eight side ribs descend from the midrib on each side. The callus is rectangular, 4 millimeters long and 1.5 millimeters wide; 17 hairy lamellar side calluses extend from it, the two lowest on each side can be almost invisible.
At the base, the labellum is directly fused with the approximately 1.5 millimeter long gynostemium . The free stamens are 1.2 millimeters long, the yellow anthers 1.2 millimeters long. The stylus is 1 millimeter, the black-spotted ovary 12 millimeters long. The straw-colored capsule fruit is 25 to 45 millimeters long.
Distribution area
Corsia huonensis has been collected twice in northeastern New Guinea on the Huon Peninsula at an altitude of 1460 to 2440 m.
Systematics
Corsia huonensis was first described by Pieter van Royen in 1972 and is particularly close to the species Corsia lamellata . Like this, it is placed in the sessilis section , since the labellum is directly fused with the gynostemium.
proof
- Pieter van Royen: Sertulum Papuanum 17. Corsiaceae of New Guinea and surrounding areas. In: Webbia. 27: 223-255, 1972