Xerochasia

Xerochasia ( old Gr. Ξηρός xerós “dry”, “dry” and χάσμα chásma “column”, “opening”) occurs when fruits, fruit stands or sporangia open when dry and close when wet (e.g. Saponaria spec. , Cones of the Conifers, sporangia of mosses and ferns). The opening is based on the swelling of the cell walls and the death of the protoplasts with different orientations of the microfibrils.

A distinction is made between euxerochasia and pseudoxerochasia .

See also

• Hygrochasia

literature

• Eduard Strasburger : Textbook of botany . 36th edition, revised by Andreas Bresinsky, Spektrum Akademischer Verlag, Heidelberg 2008, ISBN 978-3-8274-1455-7 .
• Gerhard Wagenitz : Dictionary of botany. The terms in their historical context. 2nd, expanded edition. Spectrum Academic Publishing House, Heidelberg / Berlin 2003, ISBN 3-8274-1398-2 .

Individual evidence

1. ↑ W. Ruhland (Ed.): Handbuch der Pflanzenphysiologie. Volume VII: Physiology of Movements , Part 2, Springer, 1962, ISBN 978-3-642-94853-4 , p. 716 f.
2. ↑ Marie Lhotská: contribution to the Termiologie Diasporologie. In: Folia Geobotanica et Phytotaxonomica. Volume 10, Issue 1, 1975, pp. 105-108, doi : 10.1007 / BF02855106 .