Drosera meristocaulis
| Drosera meristocaulis | ||||||||||||
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Drosera meristocaulis |
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| Drosera meristocaulis | ||||||||||||
| Maguire & Wurdack |
Drosera meristocaulis is a carnivorous plant of the genus sundew ( Drosera ). It was first described in 1957 by Bassett Maguire and John Julius Wurdack.
description
Drosera meristocaulis is a perennial, herbaceous plant that is three to twelve centimeters tall. As a young plant, this type of plant forms a rosette lying flat on the ground, with increasing age it grows higher and higher and forms a multi-branched stem axis . Unlike all other species in the Bryastrum section , it does not form breeding scales.
At the upper end of the stem axis are the wine-red, up to 1.4 centimeters long leaves in the form of a rosette, below which the dead foliage hangs down. The leaf stalk is up to one inch long, the elliptical leaf blade is up to four millimeters long and one millimeter wide.
The species blooms from February onwards, the flower stalks are only up to a millimeter long and, rarely in sundew species, only have a single bloom . The petals are up to five millimeters long, the inverted egg-shaped petals pink. There are three undivided styluses and three scars . The pollen has a central pore. The broadly linear seeds are almost 0.5 millimeters long, have a net-like surface and germinate hypogeaically .
distribution
The species grows exclusively in Venezuela on the Neblina- Tepui between 1670 and 2200 m above sea level. NN in open, swampy savannahs . It is found, among other things, associated with swamp jugs ( Heliamphora tatei ).
Systematics and botanical history
The species was first collected in 1954 and first described in 1957, Maguire and Wurdack classified it in a separate section Meristocaulis . After it was lost for a long time (apart from two collections in 1984 and 1985), it was found again after several expeditions at the end of 2004 by the Brazilian botanist Fernando Rivadavia , cultivated and further examined. After molecular genetic investigations, it surprisingly turned out that it is part of the Bryastrum section, i.e. its closest relatives are the dwarf sundew, which only occurs in Australia.
literature
- Mireya D. Correa A., Tânia Regina dos Santos Silva: Drosera (Droseraceae) (= Flora Neotropica. 96). New York Botanical Garden, New York NY 2005, ISBN 0-89327-463-1 .
