Corsia cordata
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Corsia cordata |
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Corsia cordata is a loose leaf green plant type from the family of Corsiaceae . It wasfirst describedin 1913 by Friedrich Richard Rudolf Schlechter .
features
Like all species of the genus also has Corsia cordata the photosynthesis abandoned and therefore forms no chlorophyll more. Instead, it lives myco-heterotrophically on a mycorrhizal fungus .
Corsia cordata is an unbranched and upright herbaceous plant . A hairless stem 12 to 25 centimeters long sprouts from the short, creeping rhizome . This is occupied with five to seven, lanceolate-sheathed and stem-encompassing alternate leaves.
The upright single flowers are terminal. Of the six petals (three tepals each in two petal circles ) five are linear, 13 to 15 millimeters long and drooping, they are yellowish in color and finely papilose . The top sixth, the so-called labellum , stands upright, is light wine-red with yellowish markings, greatly enlarged (15 millimeters long, 13 millimeters wide) and pointed heart-shaped. It is triangularly thickened at the base and covered with fourteen papillae around the thickening. The labellum encloses the flower bud and covers the other flower organs after opening.
The filaments of the six stamens are subulate , the anthers approximately square. The stylus is cylindrical and half as long as the stamens.
Distribution area
Corsia cordata is native to the north-eastern part of New Guinea in the forests of the Dischore Mountains, above Dschischtari, at an altitude of 1200 meters on humus soil.
literature
Much of the information in this article has been obtained from the following sources:
- R. Schlechter: New Corsiaceae of Papuaia. In: Botanical yearbooks for systematics, plant history and plant geography. Vol. 49, pp. 109–112, 1913, Stuttgart, online version