Siberian dwarf tree of life

Siberian dwarf tree of life
	Siberian dwarf arborvitae ( Microbiota decussata )
Systematics
Class :	Coniferopsida
Order :	Conifers (Coniferales)
Family :	Cypress family (Cupressaceae)
Subfamily :	Cupressoideae
Genre :	Microbiota
Type :	Siberian dwarf tree of life
Scientific name of the genus
	Microbiota
	Com.
Scientific name of the species
	Microbiota decussata
	Com.

The Siberian dwarf arborvitae or compartments juniper ( Microbiota decussata ) is the only species in the genus Microbiota and belongs to the subfamily of Cupressoideae in the family of cypress plants (Cupressaceae). Although this species is on the Russian Red List of Threatened Species, it is not endangered and its locations have rarely been visited. The species was discovered in 1923 and the Soviet Union kept its find secret for 50 years.

distribution

The homeland are the Siberian Mountains ( Russia ). This species only has locations in the Sichote-Alin Mountains in the Primorye region , near the Partisanskaya River (formerly Suchan).

description

Siberian dwarf arborvitae ( Microbiota decussata )

The Siberian dwarf arborvitae is an evergreen shrub . In the wild, it can grow to a height of 0.5 m, and in arboretums up to 1 m. The bark is brown. The leaves can have three different shapes. The flaky leaves on the cone-bearing branches are about 2 mm long and 2 mm wide. On the branches that do not have cones, the oval leaves are spotted and have elliptical glands on top (shadow leaves do not have such glands). Some leaves can be needle-shaped. The leaves are light green in summer and turn coppery in winter.

The Siberian dwarf tree of life is monoecious ( monoecious ). The female cones are up to 6 mm long and 3 mm wide, they lignify when ripe; the cone scales are 3 mm long. Each cone produces only one wingless seed that is brown and smooth. The pollination occurs in April to May. The seeds are ripe in August to October of the same year.

These shrubs are relatively fire resistant. The essential oils ignite, but this does not cause any major damage to the bushes.

The number of chromosomes is 2n = 22.

Systematics

Based on studies of the cone structure and development, a close relationship with the oriental tree of life was established and the species was recombined to Platycladus decussata (Kom.) Jagel & Dörken .

use

The Siberian dwarf arborvitae is used as an ornamental plant as a ground cover in gardens, public green spaces and in cemeteries. It is known for its resistance to cold and drought.

swell

Description at conifers.org - The Gymnosperm Database. (engl.)

Web links

Commons : Siberian Dwarf Tree of Life - album with pictures, videos and audio files

Entry in GRIN Taxonomy for Plants. (engl.)
Microbiota decussata inthe IUCN 2013 Red List of Threatened Species . Posted by: Farjon, A., 2010. Retrieved September 30, 2013.

Individual evidence

^ Tropicos. [1]
↑ Armin Jagel, Thomas Stützel: Investigations on the morphology and morphogenesis of the seed cones of Platycladus orientalis (L.) Franco (= Thuja orientalis L.) and Microbiota decussata Kom. (Cupressaceae). Bot. Year syst. Vol. 123, 2001, pp. 337-404
↑ Armin Jagel, Veit Martin Doerken: Morphology and morphogenesis of the seed cones of the Cupressaceae - part II: Cupressoideae. Bull. CCP 4 (2), 2015, pp. 51–78 ( PDF 7 MB)

[Tropicos-1] Tropicos. [1]

[jagel-2] Armin Jagel, Thomas Stützel: Investigations on the morphology and morphogenesis of the seed cones of Platycladus orientalis (L.) Franco (= Thuja orientalis L.) and Microbiota decussata Kom. (Cupressaceae). Bot. Year syst. Vol. 123, 2001, pp. 337-404

[jagel,_doerken-3] Armin Jagel, Veit Martin Doerken: Morphology and morphogenesis of the seed cones of the Cupressaceae - part II: Cupressoideae. Bull. CCP 4 (2), 2015, pp. 51–78 ( PDF 7 MB)