青楷楓檢視原始碼討論檢視歷史
青楷楓 |
中文名稱:青楷楓 拉丁學名:Acer tegmentosum Maxim. 界:植物界 門綱:被子植物門、 雙子葉植物綱 亞綱:原始花被亞綱 目科:無患子目、 科:槭樹科 屬:槭樹屬 英文名:Acer tegmentosum Maxim. |
青楷楓,學名 Acer tegmentosum Maxim.,屬於槭樹科、槭樹屬,落葉喬木,Acer tegmentosum Maximowicz, Bull. Cl. Phys.-Math. Acad. Imp. Sci. Saint-Pétersbourg. 15: 125. 1856.,青楷楓 qing kai feng,Acer pensylvanicum Linnaeus var. tegmentosum (Maximowicz) Wesmael.,Trees to 15 m tall, andromonoecious. Bark dark gray. Branchlets glabrous, glaucous white during winter; winter buds blue, ellipsoid. Leaves deciduous; petiole 4-7(-13) cm, glabrous; leaf blade abaxially pale green, suborbicular-ovate, 10-12 × 7-9 cm, papery, abaxially with yellowish barbed hairs at vein axils, adaxially glabrous, primary veins 5, lateral veins 7 or 8 pairs, base rounded or subcordate,分布於黑龍江省、吉林省、遼寧省。 [1]
形態特徵
落葉喬木,高10-15米。樹皮灰色或深灰色,平滑,現裂紋。幾小枝無毛,當年生小枝紫色或紫綠色,多年生枝黃綠色或灰褐色。冬芽橢圓形;鱗片淺褐色,無毛,葉紙質,近於圓形或卵形,長10-12厘米,寬7-9厘米,邊緣有鈍尖的重鋸齒。
基部圓形或近於心臟形,3-7裂,通常5 裂;裂片三角形或鈍尖形,先端常具短銳尖頭;裂片間的凹缺通常鈍尖,上面深綠色,無毛,下面淡綠色,脈腋有淡黃色的叢毛;主脈5條,由基部生出,側脈7-8對,均在上面微現,在下面顯著;
葉柄長4-7厘米,稀達13厘米,無毛。花黃綠色,雜性,雄花與兩性花同株,賞成無毛的總狀花序;萼片5,長圓形,先端鈍形,長3毫米,寬1.5毫米;花瓣5,倒卵形,長3毫米,寬2毫米;雄蕊8;無毛,在兩性花中不發育;
花盤無毛,位於雄蕊的內側;子房無毛,在雄花中不發育,花柱短,柱頭微被短柔毛,略彎曲。翅果無毛,黃褐色;小堅果微扁平;翅連同小堅果長2.5-3厘米,寬1-1.3厘米,張開成鈍角或近於水平;果梗細瘦,長約5毫米。花期4月,果期9月。
Acer tegmentosum Maximowicz, Bull. Cl. Phys.-Math. Acad. Imp. Sci. Saint-Pétersbourg. 15: 125. 1856. 青楷楓 qing kai feng
Acer pensylvanicum Linnaeus var. tegmentosum (Maximowicz) Wesmael.
Trees to 15 m tall, andromonoecious. Bark dark gray. Branchlets glabrous, glaucous white during winter; winter buds blue, ellipsoid. Leaves deciduous; petiole 4-7(-13) cm, glabrous; leaf blade abaxially pale green, suborbicular-ovate, 10-12 × 7-9 cm, papery, abaxially with yellowish barbed hairs at vein axils, adaxially glabrous, primary veins 5, lateral veins 7 or 8 pairs, base rounded or subcordate, margin doubly serrulate, usually 3- or 5-lobed, rarely with 2 small basal lobes; lobes ovate, apex acuminate.
Inflorescence pendulous, racemose, 15-flowered, slender, glabrous. Pedicel ca. 5 mm, very slender. Sepals 5, oblong, ca. 3 × 1.5 mm, apex obtuse. Petals 5, obovate, ca. 3 × 2 mm. Stamens 8, glabrous, rudimentary in pistillate flowers. Disk glabrous, intrastaminal.
Ovary glabrous, rudimentary in staminate flowers; style short. Fruit yellowish brown, glabrous; nutlets flat or slightly convex; wing including nutlet 2.5-3 × 1-1.3 cm, wings spreading obtusely or nearly horizontally. Fl. Apr, fr. Sep. 2n = 26.
Coniferous and mixed forests; 500-1000 m. Heilongjiang, Jilin, Liaoning [Korea, E Russia].
標本鑑定信息
學名 Acer tegmentosum Maxim. 中文名 青楷楓
鑑定人 陳鋒 鑑定時間 20091012
標本採集信息
採集人 M.Chen 採集號 621 採集時間 19330920
採集地 中國 海拔 100 生境 mountain slope 習性 物候期 無花有果