Balearic St. John's Wort
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Balearic St. John's Wort ( Hypericum balearicum ) |
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The hypericum balearicum ( Hypericum balearicum ) is a plant from the genus of hypericum ( Hypericum ) in the family of hypericaceae (Hypericaceae).
description
Vegetative characteristics
The Balearic St. John's Wort is a richly branched shrub that reaches heights of up to 120 centimeters. The twigs are ascending, have densely opposite leaves and are square when young. Like the leaves, they are covered with large resinous glands, which makes the surface appear warty. The leaves are sessile, narrow-shaped, wavy on the edge, 10 to 12 millimeters long and 6 to 8 millimeters wide.
Generative characteristics
The flowering period extends from May to September. The flowers are single and terminal. The hermaphroditic flowers are about 4 centimeters in diameter and are radially symmetrical and five-toothed with a double flower envelope . The sepals are up to 6 millimeters long and stand at the fruit time. The bright yellow petals are about three times as long as the calyx. The numerous stamens are colored yellow and arranged in five clusters. The ovary is on top. There are five styluses.
The capsule fruit is sticky, glossy, egg-shaped and pointed.
The number of chromosomes is 2n = 24.
Occurrence
The Balearic St. John's Wort occurs in the Balearic Islands with the exception of Formentera . In Italy it has run wild in Liguria. It grows in dry, sparse forests and on rocks.
literature
- Ehrentraud Bayer, Karl Peter Buttler, Xaver Finkenzeller, Jürke Grau: Plants of the Mediterranean (= Steinbach's natural guide . Volume 17 ). Mosaik, Munich 1987, ISBN 3-570-01347-2 .
Individual evidence
- ↑ Hypericum balearicum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
