| 词条 | Betula alnoides |
| 释义 |
|image = |image_caption = |genus = Betula |parent = Betula subg. Betulaster |species = alnoides |authority = Buch.-Ham. ex D.Don }} Betula alnoides ({{zh|c=西桦|p=xi hua|lang-zh=西桦}}; {{lang-th|กำลังเสือโคร่ง}}, {{RTGS|kamlang suea khrong}}, literally: "tiger power") is a species of birch that can be found in natural condition in such countries as Bhutan, Cambodia, China, India, Laos, Myanmar, Nepal, Thailand and Vietnam at an elevation of {{convert|300|-|2100|m}} and higher in some cases (up to {{convert|2700|m}}).[1][2][3][4][5] The southernmost of all known birch species, whose natural range reaches approximately 12° N in Cardamom Mountains, Cambodia. DescriptionThe plant is {{convert|30|m}} tall with white coloured branches. It has {{convert|1.5|-|3|cm}} long petioles and has a {{convert| 2.5|-|5.5|cm}} long leaf blade that is lanceolate, ovate, papery, and even elliptic. The female inflorescences a pendulous and cylindric raceme, that, by time it matures, reaches a diameter of {{convert|5|-|10|cm}} by {{convert|4|-|6|mm}}. The peduncle is {{convert|2|-|3|mm}} long while the diameter of the bracts is only {{convert|3|mm}}. The seeds are ripe from March to May and are {{convert|1.5|-|2|mm}} long while the flowers bloom from October to January. UsesBetula alnoides inner bark is edible and is used for making cakes and bread. It is also considered to be an antidote against snakebites and is used to treat dislocated bones.[5]References1. ^{{cite journal|url= http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200006135|title=Betula alnoides|publisher=Flora of China|volume=4|page=306}} {{Taxonbar|from=Q4085314}}{{Fagales-stub}}2. ^Betula alnoides. Useful Temperate Plants. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2018-06-25. 3. ^Trees of Laos and Vietnam: a Field Guide to 100 Economically or Ecologically Important Species. Hoang Van Sam, Khamseng Nanthav Ong & P.J.A. Kessler. BLUMEA — Vol. 49, No. 2 & 3, 2004, p. 201–349 4. ^Forest Vegetation of Cardamom Mountains, Cambodia. A.N. Kuznetsov, S.P. Kuznetsova. BULLETIN OF MOSCOW SOCIETY OF NATURALISTS. BIOLOGICAL SERIES. 2012. Vol. 117, part 5, 2012 September – October, p. 39—50 (in Russian) 5. ^1 {{cite web|url= http://www.pfaf.org/user/Plant.aspx?LatinName=Betula+alnoides|title=Betula alnoides|publisher=PFAF|accessdate=December 3, 2013}} 5 : Betula|Trees of Bhutan|Trees of China|Trees of Indo-China|Trees of Nepal |
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