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梣屬[1][註 1]（學名：Fraxinus），木犀科的一個屬，約有60個物種。產於溫帶和亞熱帶地區，在中國有近30種，北方、南方和中部都有種植。
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梣樹其學名來自於拉丁語的「矛」，因為當時士兵們作戰用的武器長矛的柄是用梣木製作的。在斯堪的納維亞神話中，世界由一棵梣樹支撐着。在希臘神話中，宙斯創造人類之初，人是從梣樹里誕生的。
梣樹葉子對生，羽狀帶齒，花有兩性，花序錐形，花冠常呈四裂，雄蕊兩個，柱頭二裂，果實翅形，子葉扁平。
梣樹的根和葉子具有利尿、消炎等藥理功能。梣木是製作棒球用球棒的常用木種。
開花的梣樹
梣樹的果實
- 北美洲東部
- Fraxinus americana L. – White Ash
- Fraxinus caroliniana Mill. – Carolina Ash
- Fraxinus nigra Marshall – Black Ash
- 美國紅梣 Fraxinus pennsylvanica Marshall
- Fraxinus profunda (Bush) Bush – Pumpkin Ash
- Fraxinus quadrangulata Michx. – Blue Ash
- Fraxinus tremillium – Indigo Ash
- 北美洲西部和西南部
- Fraxinus anomala Torr. ex S.Watson – Singleleaf Ash
- Fraxinus berlandieriana DC. – Mexican Ash
- Fraxinus cuspidata Torr. – Fragrant Ash
- 雙瓣白蠟 Fraxinus dipetala Hook. & Arn. – California Ash or Two-petal Ash
- Fraxinus dubia
- Fraxinus gooddingii – Goodding's Ash
- Fraxinus greggii A.Gray – Gregg's Ash
- Fraxinus latifolia Benth. – Oregon Ash
- Fraxinus lowellii – Lowell Ash
- Fraxinus papillosa Lingelsh. – Chihuahua Ash
- Fraxinus purpusii
- Fraxinus rufescens
- Fraxinus texensis (A.Gray) Sarg. – Texas Ash
- Fraxinus uhdei (Wenz.) Lingelsh. – Shamel Ash or Tropical Ash
- 絨毛白蠟 Fraxinus velutina Torr.
- 古北界西部（歐洲、北非和西南亞)
- Fraxinus angustifolia Vahl – Narrow-leafed Ash or Caucasian Ash
- Fraxinus angustifolia subsp. oxycarpa – Claret Ash or Raywood Ash
- Fraxinus dimorpha
- 歐洲白蠟樹 Fraxinus excelsior L.
- Fraxinus holotricha Koehne
- Fraxinus ornus L. – Manna Ash or Flowering Ash
- Fraxinus syriaca
- Fraxinus pallisiae Wilmott – Pallis' Ash
- 古北界東部（中亞和東亞）
- Fraxinus apertisquamifera
- 狹葉梣 Fraxinus baroniana
- 小葉梣 Fraxinus bungeana DC.
- 白蠟樹 Fraxinus chinensis Roxb.
- Fraxinus chiisanensis
- 多花梣 Fraxinus floribunda Wall.
- 光臘樹 Fraxinus griffithii C.B.Clarke
- 湖北梣 Fraxinus hubeiensis
- 日本梣 Fraxinus japonica – Japanese Ash
- Fraxinus lanuginosa
- Fraxinus longicuspis
- 白槍桿 Fraxinus malacophylla
- 水曲柳 Fraxinus mandschurica Rupr.
- 廬山梣 Fraxinus mariesii
- Fraxinus micrantha Lingelsh.
- 秦嶺梣 Fraxinus paxiana Lingelsh.
- 象蠟樹 Fraxinus platypoda
- Fraxinus raibocarpa Regel
- Fraxinus sieboldiana Blume – Japanese Flowering Ash
- Fraxinus spaethiana Lingelsh. – Späth's Ash
- Fraxinus trifoliata
- 椒葉梣 Fraxinus xanthoxyloides (G.Don) Wall. ex DC.[4][5]
Species Records of Fraxinus. Germplasm Resources Information Network. United States Department of Agriculture. [2010-02-22]. （原始內容存檔於2011-08-25）. Fraxinus L.. ITIS Standard Reports. Integrated Taxonomic Information System. [2010-02-22]. （原始內容存檔於2009-06-17）.
