Blasiaceae

Blasiaceae
	Blasia pusilla
Systematics
without rank:	Streptophyta
Empire :	Plants (Plantae)
Department :	Liverworts (Marchantiophyta)
Class :	Blasiopsida
Order :	Blasiales
Family :	Blasiaceae
Scientific name of the class
	Blasiopsida
	Stech & Frey
Scientific name of the order
	Blasiales
	Stotler & Crand.-Stotl.
Scientific name of the family
	Blasiaceae
	Klinggr.

The Blasiaceae are a family of liverworts with only two species and are now placed in a class of their own, the Blasiopsida.

features

The thallus is simply built and has two rows of lamellar scales on the underside. The structure of the gametophyte - sporophyte connection and the blepharoplast is similar to that of the Marchantiopsida . The spermatozoids are built in the same way as those of Marchantia and the Sphaerocarpales .

Systematics

Drawing of a Blasia pusilla

External system

The systematic position of the Blasiaceae is not finally clarified. Because of the gametophyte-sporophyte connection, the family is considered by some authors to belong to the Marchantiopsida. Other authors place Blasia in the Metzgeriales on the basis of studies of the 25S rDNA , while pedigrees with the trn L-Intron make Blasia appear as a separate developmental branch , which is why they are listed as a separate class.

Internal system

The class consists of two monotypical genera:

Blasia pusilla L. is also found in Europe. It lives in symbiosis with Nostoc colonies, forms brood bodies and has no oil bodies
Cavicularia densa Steph.

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

↑ JMPass, KS Renzaglia: Comparative microanatomy of the locomotory apparatus of Conocephalum. in: Fragm. Flor. Geobot. Volume 40, 1995, pp. 365-377.
^ JA Wheeler: Molecular phylogenetic reconstruction of the marchantioid liverwort radiation. in: The Bryologist, Volume 103, 2000, pp. 314-333.
↑ M. Stech, W. Frey: CpDNA-relationship and classification of the liverworts (Hepaticophytina, Bryophyta) . in: Nova Hedwigia 2001.

Web links

Commons : Blasiaceae - collection of images, videos and audio files

[1] JMPass, KS Renzaglia: Comparative microanatomy of the locomotory apparatus of Conocephalum. in: Fragm. Flor. Geobot. Volume 40, 1995, pp. 365-377.

[2] JA Wheeler: Molecular phylogenetic reconstruction of the marchantioid liverwort radiation. in: The Bryologist, Volume 103, 2000, pp. 314-333.

[3] M. Stech, W. Frey: CpDNA-relationship and classification of the liverworts (Hepaticophytina, Bryophyta) . in: Nova Hedwigia 2001.