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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
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
Betula Sandal Unboxing! , 베툴라 샌들, Betula(ベチュラ)
Betula Sandal Unboxing! , 베툴라 샌들, Betula(ベチュラ)
Published: 2015/08/04
Channel: Stuff Review
Die Birke ☆ Baumwissen
Die Birke ☆ Baumwissen
Published: 2016/07/26
Channel: Lernvideos und Vorträge
Lavendel & Stecklinge Grundwissen
Lavendel & Stecklinge Grundwissen
Published: 2016/10/14
Channel: Yamadori Bonsai
"Birkenwäldchen" umtopfen und bearbeiten
"Birkenwäldchen" umtopfen und bearbeiten
Published: 2017/04/29
Channel: Bonsai-Kulturen
Bonsai Anzucht - Impressionen April 2017
Bonsai Anzucht - Impressionen April 2017
Published: 2017/04/25
Channel: Bonsai-Kulturen
1/2: Margret Madejsky: Blumen für die Vagina - Vaginalpflege, chronische Scheidenhauterkrankungen
1/2: Margret Madejsky: Blumen für die Vagina - Vaginalpflege, chronische Scheidenhauterkrankungen
Published: 2016/11/07
Channel: InfosFürKörperGeistUndSeele
# 4 betula songwriter slamery 2014 - mirco schifferle -
# 4 betula songwriter slamery 2014 - mirco schifferle -
Published: 2014/04/18
Channel: stefan ribler
Eiche Yamadori Sammeln und eintopfen Start der Serie
Eiche Yamadori Sammeln und eintopfen Start der Serie
Published: 2016/09/23
Channel: Yamadori Bonsai
03 June 2017 Borrowdale Park Race 7
03 June 2017 Borrowdale Park Race 7
Published: 2017/06/04
Channel: Borrowdale ZimRacing
Birkenstock Milano Sandals Unboxing, Birkenstock Milano vs Betula
Birkenstock Milano Sandals Unboxing, Birkenstock Milano vs Betula
Published: 2015/07/19
Channel: margorud
21 May 2017 Borrowdale Park race 7
21 May 2017 Borrowdale Park race 7
Published: 2017/05/23
Channel: Borrowdale ZimRacing
2016.01.17 Guineas Trial (ZIM) - Cool Solution
2016.01.17 Guineas Trial (ZIM) - Cool Solution
Published: 2016/01/17
Channel: fometter1
2016.05.22 Zimbabwe Oaks - Duffi
2016.05.22 Zimbabwe Oaks - Duffi's Call
Published: 2016/05/23
Channel: fometter1
2016.03.13 Tba Silver Slipper (ZIM) - Duffi
2016.03.13 Tba Silver Slipper (ZIM) - Duffi's Call
Published: 2016/03/13
Channel: fometter1
2016.03.20 Bloodstock South Africa 2000 (ZIM) - Mathematician
2016.03.20 Bloodstock South Africa 2000 (ZIM) - Mathematician
Published: 2016/03/20
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
Borrowdale Park 26 July 2015, RACE 5
Borrowdale Park 26 July 2015, RACE 5
Published: 2015/07/28
Channel: Borrowdale ZimRacing
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
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
1/2: Margret Madejsky: Die kleine Baumapotheke
1/2: Margret Madejsky: Die kleine Baumapotheke
Published: 2014/11/14
Channel: InfosFürKörperGeistUndSeele
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
Stricken - Zopfmuster Betula - Veronika Hug
Stricken - Zopfmuster Betula - Veronika Hug
Published: 2015/10/05
Channel: Redaktion Hug - Häkeln & Stricken
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
Die Birke
Die Birke
Published: 2014/03/12
Channel: Gion De Salugo
Great $35 EVERGREENS XXX
Great $35 EVERGREENS XXX
Published: 2010/04/13
Channel: jaywhite45
Yamadori Bonsai Die dicke Lärche aus dem Wald gestalten & drahten
Yamadori Bonsai Die dicke Lärche aus dem Wald gestalten & drahten
Published: 2017/04/14
Channel: Yamadori Bonsai
1/2: Gabriela Nedoma: Knospenkräfte für die Weiblichkeit - Gemmotherapie für die Frau
1/2: Gabriela Nedoma: Knospenkräfte für die Weiblichkeit - Gemmotherapie für die Frau
Published: 2016/11/07
Channel: InfosFürKörperGeistUndSeele
"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
Ausstellung über Bonsai des AK Aichtal-Filder 2016
Ausstellung über Bonsai des AK Aichtal-Filder 2016
Published: 2016/09/18
Channel: Bernd Schmidt
View Our Great $35 EVERGREENS
View Our Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
Reset Your Yard with our $35 Trees In zip code 22198
Reset Your Yard with our $35 Trees In zip code 22198
Published: 2010/04/13
Channel: jaywhite45
Energy From Mountains | Renewable Energy Solutions
Energy From Mountains | Renewable Energy Solutions
Published: 2017/08/10
Channel: ColdFusion
About Great $35 EVERGREENS
About Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
THE APPRENTICES GRADUATE FROM RANDJIESFONTEIN.
THE APPRENTICES GRADUATE FROM RANDJIESFONTEIN.
Published: 2015/12/20
Channel: BONSKI CLAN
Great $35 EVERGREENS XXX CCC
Great $35 EVERGREENS XXX CCC
Published: 2010/04/13
Channel: jaywhite45
See Great $35 EVERGREENS
See Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
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: 2017/08/04
Channel: Steven Dampflokfan
See These Great $35 EVERGREENS
See These Great $35 EVERGREENS
Published: 2010/04/13
Channel: jaywhite45
Stricken - Noppenmuster Pinboard - Veronika Hug
Stricken - Noppenmuster Pinboard - Veronika Hug
Published: 2015/10/05
Channel: Redaktion Hug - Häkeln & Stricken
Shem Thomas - Valley (3/5)
Shem Thomas - Valley (3/5)
Published: 2015/07/08
Channel: Living Room
Bonsai Erstgestaltung Findling
Bonsai Erstgestaltung Findling
Published: 2015/03/23
Channel: BonsaiAsiaDesign
"Dreamer" - Freddy - Live & Coloured - 3.4.2016 - "Cafe´-Central" Gerstetten.
"Dreamer" - Freddy - Live & Coloured - 3.4.2016 - "Cafe´-Central" Gerstetten.
Published: 2016/04/13
Channel: Freddy Betula
Weißbirke - Vom Ahorn bis zur Zwiebel
Weißbirke - Vom Ahorn bis zur Zwiebel
Published: 2014/02/15
Channel: Stefan Wittke
"When I´m `64"- Freddy - Live am 21 01 2016 in Lauingen im "Bierbrunnen" (Probeaufnahme).
"When I´m `64"- Freddy - Live am 21 01 2016 in Lauingen im "Bierbrunnen" (Probeaufnahme).
Published: 2016/01/24
Channel: Freddy Betula
Bonsaikultur in Grötzingen: Ein Mann und seine Miniatur-Bäume
Bonsaikultur in Grötzingen: Ein Mann und seine Miniatur-Bäume
Published: 2015/10/07
Channel: Landesschau Baden-Württemberg
letzter gongschlag 2014 im hortus insectorum
letzter gongschlag 2014 im hortus insectorum
Published: 2014/10/19
Channel: Markus Gastl
Gartenhaus Betula S8984 40 mm Blockbohlenhaus, Grundfläche: 15,07
Gartenhaus Betula S8984 40 mm Blockbohlenhaus, Grundfläche: 15,07
Published: 2016/07/16
Channel: Pierre Begley
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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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 in 1914, 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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