Fossombroniaceae

Fossombroniaceae
	Fossombronia sp.
Systematics
without rank:	Streptophyta
Empire :	Plants (Plantae)
Department :	Liverworts (Marchantiophyta)
Class :	Fossombroniopsida
Order :	Fossombronials
Family :	Fossombroniaceae
Scientific name
	Fossombroniaceae
	Hazsl.

The Fossombroniaceae are a family of liverworts , they form their own order Fossombroniales in the class of Fossombroniopsida .

features

The gametophytes are thalless and have a midrib attached to them: either upright lamellae ( petalophyllum ) running to the edge of the thallus or two rows of lateral leaf lobes ( fossombronia ). This structure is similar to that of the Jungermanniidae. However, the gametangia are formed on the midrib, which is why the “leaves” are interpreted as slashed thallus wings.

The perichaetium (thallus overgrowth around the gametangia stands ) is cup-shaped or bell-shaped. The kalyptra is shorter than the perichaetium. The capsule is spherical. When ripe, the two-layer capsule wall breaks down from the tip into irregular pieces. The spores have irregular ridges or are prickly.

Systematics

External system

The structure of the connection between the sporophyte and gametophyte differs from that of the Jungermanniopsida. In addition, the antheridia and archegonia stand in a simple acropetal sequence on the upper side of the thallus axis. The capsules have no flaps.

Internal system

The Fossombroniaceae consist of two genera with around 90 species:

Fossombronia
Austrofossombronia

literature

Jan-Peter Frahm: Biology of Mosses . Spectrum Academic Publishing House, Heidelberg and Berlin 2001, ISBN 3-8274-0164-X
Jan-Peter Frahm, Wolfgang Frey, J. Döring: Moosflora . 4th, revised and expanded edition (UTB for Science, Volume 1250). Ulmer, Stuttgart 2004, ISBN 3-8001-2772-5 (Ulmer) & ISBN 3-8252-1250-5 (UTB)

Individual evidence

↑ Wolfgang Frey, Eberhard Fischer, Michael Stech: Bryophytes and seedless Vascular Plants . In: Wolfgang Frey (Ed.): Syllabus of Plant Families - A. Engler's Syllabus of Plant Families . 13th edition. tape 3 . Borntraeger, Berlin / Stuttgart 2009, ISBN 978-3-443-01063-8 , pp. 36 .

Web links

Commons : Fossombroniaceae - Collection of images, videos and audio files

[1] Wolfgang Frey, Eberhard Fischer, Michael Stech: Bryophytes and seedless Vascular Plants . In: Wolfgang Frey (Ed.): Syllabus of Plant Families - A. Engler's Syllabus of Plant Families . 13th edition. tape 3 . Borntraeger, Berlin / Stuttgart 2009, ISBN 978-3-443-01063-8 , pp. 36 .