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2015.07.26 Breeders Fillies Mile (ZIM) - Betula Uber
2015.07.26 Breeders Fillies Mile (ZIM) - Betula Uber
Published: 2015/07/26
Channel: fometter1
03 June 2017 Borrowdale Park Race 7
03 June 2017 Borrowdale Park Race 7
Published: 2017/06/04
Channel: Borrowdale ZimRacing
Birke (Betula pendula) einfach vermehren durch Samen
Birke (Betula pendula) einfach vermehren durch Samen
Published: 2016/09/18
Channel: Pflanzen Vermehrung
21 May 2017 Borrowdale Park race 7
21 May 2017 Borrowdale Park race 7
Published: 2017/05/23
Channel: Borrowdale ZimRacing
Great $35 EVERGREENS XXX
Great $35 EVERGREENS XXX
Published: 2010/04/13
Channel: jaywhite45
Birkenstock Milano Sandals Unboxing, Birkenstock Milano vs Betula
Birkenstock Milano Sandals Unboxing, Birkenstock Milano vs Betula
Published: 2015/07/19
Channel: margorud
Building A Semi-Permanent Shelter (Part 2 of 3)
Building A Semi-Permanent Shelter (Part 2 of 3)
Published: 2016/04/27
Channel: Survival Lilly
Are Birkenstocks Water Proof?
Are Birkenstocks Water Proof?
Published: 2017/06/12
Channel: SS House Tips
Die Birke ☆ Baumwissen
Die Birke ☆ Baumwissen
Published: 2016/07/26
Channel: Lernvideos und Vorträge
Great $35 EVERGREENS XXX  AAA
Great $35 EVERGREENS XXX AAA
Published: 2010/04/13
Channel: jaywhite45
2016.03.13 Tba Silver Slipper (ZIM) - Duffi
2016.03.13 Tba Silver Slipper (ZIM) - Duffi's Call
Published: 2016/03/13
Channel: fometter1
2016.05.22 Zimbabwe Oaks - Duffi
2016.05.22 Zimbabwe Oaks - Duffi's Call
Published: 2016/05/23
Channel: fometter1
Yamadori Bonsai " Die Birke " Baumvorstellung und Vorbeitung dazu" Betula pubescens, Pendüle
Yamadori Bonsai " Die Birke " Baumvorstellung und Vorbeitung dazu" Betula pubescens, Pendüle
Published: 2016/08/13
Channel: Yamadori Bonsai
Harzer Schmalspurbahn 2017 / Vatertagsfahrt mit dem Freundeskreis Selketalbahn e.V. (25.05.2017)
Harzer Schmalspurbahn 2017 / Vatertagsfahrt mit dem Freundeskreis Selketalbahn e.V. (25.05.2017)
Published: 2017/06/01
Channel: Steven Dampflokfan
2016.01.17 Guineas Trial (ZIM) - Cool Solution
2016.01.17 Guineas Trial (ZIM) - Cool Solution
Published: 2016/01/17
Channel: fometter1
2016.04.24 Zimbabwe Derby - Mathematician
2016.04.24 Zimbabwe Derby - Mathematician
Published: 2016/04/24
Channel: fometter1
2016.11.20 Champion Fillies Stakes (ZIM) - La Carmelita
2016.11.20 Champion Fillies Stakes (ZIM) - La Carmelita
Published: 2016/11/20
Channel: fometter1
2016.03.20 Bloodstock South Africa 2000 (ZIM) - Mathematician
2016.03.20 Bloodstock South Africa 2000 (ZIM) - Mathematician
Published: 2016/03/20
Channel: fometter1
Borrowdale Park 26 July 2015, RACE 5
Borrowdale Park 26 July 2015, RACE 5
Published: 2015/07/28
Channel: Borrowdale ZimRacing
Ribiseln ganz einfach selbst durch Absenker vermehren und pflanzen
Ribiseln ganz einfach selbst durch Absenker vermehren und pflanzen
Published: 2017/04/02
Channel: Garteln
Betula Witchita & Professor Doktor Oglis von Quasebarth - WQ Nr 9
Betula Witchita & Professor Doktor Oglis von Quasebarth - WQ Nr 9
Published: 2014/10/15
Channel: nord über südwest
Stricken - Zopfmuster Betula - Veronika Hug
Stricken - Zopfmuster Betula - Veronika Hug
Published: 2015/10/05
Channel: Redaktion Hug - Häkeln & Stricken
Bonsai Erstgestaltung Findling
Bonsai Erstgestaltung Findling
Published: 2015/03/23
Channel: BonsaiAsiaDesign
Warum ist die Birke weiß - Wissenswertes über den Baum - Betulin Rinde
Warum ist die Birke weiß - Wissenswertes über den Baum - Betulin Rinde
Published: 2016/12/13
Channel: Tipps , Tricks, Kurioses und Wissenswertes
Baumis Danke
Baumis Danke
Published: 2015/01/09
Channel: ElNiGo2
Bonsai Anzucht - Impressionen April 2017
Bonsai Anzucht - Impressionen April 2017
Published: 2017/04/25
Channel: Bonsai-Kulturen
About Great $35 EVERGREENS
About Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
Bonsai selber machen, Ameisen und die Birke, Entwicklung eines Yamadori´s
Bonsai selber machen, Ameisen und die Birke, Entwicklung eines Yamadori´s
Published: 2017/05/12
Channel: Yamadori Bonsai
Ausstellung über Bonsai des AK Aichtal-Filder 2016
Ausstellung über Bonsai des AK Aichtal-Filder 2016
Published: 2016/09/18
Channel: Bernd Schmidt
Richtung Buschwindmühle 1
Richtung Buschwindmühle 1
Published: 2014/02/23
Channel: tilia betula
Lavendel & Stecklinge Grundwissen
Lavendel & Stecklinge Grundwissen
Published: 2016/10/14
Channel: Yamadori Bonsai
See Great $35 EVERGREENS
See Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
Reset Your Yard with our $35 Trees In Va and Pa
Reset Your Yard with our $35 Trees In Va and Pa
Published: 2010/04/13
Channel: jaywhite45
See These Great $35 EVERGREENS
See These Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
Birke im Garten (Hänge-Birke / Betula pendula)
Birke im Garten (Hänge-Birke / Betula pendula)
Published: 2015/06/02
Channel: GartenXL
View Our Great $35 EVERGREENS
View Our Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
"Things We Lost In The Fire" - Freddy Betula - Live am 29.12.2015 in Ulm im "Barfüßer".
"Things We Lost In The Fire" - Freddy Betula - Live am 29.12.2015 in Ulm im "Barfüßer".
Published: 2016/01/03
Channel: Freddy Betula
Gartenhaus Betula S8717 16 mm Blockbohlenhaus, Grundfläche: 6,12
Gartenhaus Betula S8717 16 mm Blockbohlenhaus, Grundfläche: 6,12
Published: 2016/07/16
Channel: Fritz Waugh
die erste Brücke
die erste Brücke
Published: 2014/04/20
Channel: tilia betula
Weißbirke - Vom Ahorn bis zur Zwiebel
Weißbirke - Vom Ahorn bis zur Zwiebel
Published: 2014/02/15
Channel: Stefan Wittke
Vermehrung eines Drachenbaumes
Vermehrung eines Drachenbaumes
Published: 2017/03/21
Channel: CryTec
Great $35 EVERGREENS XXX ABC
Great $35 EVERGREENS XXX ABC
Published: 2010/04/13
Channel: jaywhite45
Shem Thomas - Valley (3/5)
Shem Thomas - Valley (3/5)
Published: 2015/07/08
Channel: Living Room
herzjesu Jugendfest 2017
herzjesu Jugendfest 2017
Published: 2017/04/22
Channel: MrCirest
Schwarz-Birke (Betula nigra) im Botanischen Garten Augsburg
Schwarz-Birke (Betula nigra) im Botanischen Garten Augsburg
Published: 2013/06/07
Channel: 55klatsch
Teppichwaschen mit Sauerkraut?
Teppichwaschen mit Sauerkraut?
Published: 2014/05/18
Channel: thomas van stinissen
Stricken - Noppenmuster Pinboard - Veronika Hug
Stricken - Noppenmuster Pinboard - Veronika Hug
Published: 2015/10/05
Channel: Redaktion Hug - Häkeln & Stricken
Flipsters Sandalen
Flipsters Sandalen
Published: 2014/05/17
Channel: Flipsters Europe
Bonsaiausstellung 2016 - Buchen im Odenwald / Deutschland
Bonsaiausstellung 2016 - Buchen im Odenwald / Deutschland
Published: 2016/05/08
Channel: Bernd Schmidt
Interview mit Pascal & Shem nach dem Battle - The Voice of Switzerland 2014
Interview mit Pascal & Shem nach dem Battle - The Voice of Switzerland 2014
Published: 2014/03/15
Channel: SRF The Voice
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WIKIPEDIA ARTICLE

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Betula uber
Betula uber JPG1A.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fagales
Family: Betulaceae
Genus: Betula
Species: B. uber
Binomial name
Betula uber
(Ashe) Fern.
Betula uber range map 2.png
Natural range of Betula uber

Betula uber (Virginia Round-leaf Birch) is a rare species of tree in the birch family. One of the most endangered species of North American trees, it is endemic to Smyth County, in the U.S. state of Virginia. It is part of the temperate broadleaf and mixed forests biome.

Leaves

The tree was first described in 1918 as a variety of Betula lenta, and elevated to species status in 1945.[1][2] It hybridizes with B. lenta and it has been suggested that it is actually a round-leaved mutant form of B. lenta.[1][2] Some authorities prefer to treat it as a variety.[3]

After it was first discovered, the tree was not seen again and was thought to be extinct until 1975, when some individuals were found.[2] These 18 adult trees and 23 saplings and seedlings were in a forest along the degraded banks of Cressy Creek on Smyth County, Virginia.[2] The tree was federally listed as an endangered species and conservation efforts were begun.[3] Many seedlings were sprouted in greenhouses and planted in the forest.[2] By 1995 there were 20 populations and it was downlisted to threatened status.[2] The tree was propagated in order to discourage collectors from taking wild specimens, or vandals from destroying them.[2] A recent count estimated 961 individuals in the wild as of 2006.[3] Eight of these are in the original creekside population.[4] The species will not be removed from the endangered species list yet because it has not been observed reproducing sexually, and naturally, more than once.[2] The expansion of its range is limited because the area is surrounded by agricultural land, but the territory on which the tree occurs is not immediately threatened.[2]

This is a tree of moderate size, growing up to 15 meters tall. The crown is compact. The bark is aromatic and dark brown or black in color.[3] The leaf is round or slightly oval with a heart-shaped base and a toothed edge and measures up to 5 centimeters long.[3] The catkin is up to 2.8 centimeters long and contains tiny samaras measuring 2 millimeters in length.[3] The tree is wind-pollinated and reproduces by seed.[2] Seed production is much heavier in some years than in others.[3] The tree's lifespan is around 50 years.[3]

References[edit]

External links[edit]

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