华东楠Machilus leptophylla
中文名(Chinese Name):华东楠
学名(Scientific Name):Machilus leptophylla Hand.-Mazz.
英文名(English Common Name):
别名(Chinese Common Name):薄叶润楠
异名(Synonym):Persea leptophylla (Hand.-Mazz.) Kosterm.
科属(Family & Genus):樟科(Lauraceae)润楠属
形态特征(Description):高大乔木,高达28米;树皮灰褐色。枝粗壮,暗褐色,无毛。顶芽近球形,外部的鳞片宽卵形,长2毫米,有小凸尖,除边缘外具早落的微小绢毛,内面的鳞片较长,有黄褐色绢毛。叶互生或在当年生枝上轮生,倒卵状长圆形,长14-24(32)厘米,宽3.5-7(8)厘米,先端短渐尖,基部楔形,坚纸质,幼时下面全面被贴伏银色绢毛,老时上面深绿,无毛,下面带灰白色,仍有稍疏绢毛,且脉上较密,后渐脱落,中脉在上面凹下,在下面显著凸起,侧脉每边14-20(24)条,略带红色,侧脉间有疏离的横脉,小脉稍疏,连结成网状,不太明显;叶柄稍粗,长1-3厘米,无毛。圆锥花序6-10个,聚生嫩枝的基部,长8-12(15)厘米,柔弱,多花;花通常3朵生在一起,总梗、分枝和花梗略具微细灰色微柔毛;花长7毫米,白色,干后银灰色,花梗丝状,长约5毫米;花被裂片几等长,有透明油腺,长圆状椭圆形,先端急尖,花后平展,背上有粉质柔毛,内面有很稀疏的小柔毛或无毛,边缘有微小睫毛,外轮的稍宽;能育雄蕊药室顶上有短尖,花丝近线状,基部有簇毛;第一、二轮雄蕊花药的上2室由于隔膜不完整往往变成1室,以单片活瓣开裂,下2室较长,顶部斜向上升,第三轮雄蕊长4-5毫米,花药下2室较长,外向,上2室内向,腺体大,圆肾状,有短柄,退化雄蕊长1.8-2毫米,柄圆柱形,上部略增大,先端三角形,顶锐尖。果球形,直径约1厘米;果梗长5-10毫米。
分布(Distribution):产福建、浙江、江苏、湖南、广东、广西、贵州。生于海拔450-1200米阴坡谷地混交林中。
用途(Use):树皮可提树脂;种子可榨油。
引自植物志英文版FOC Vol. 7 Page 204, 214
Machilus leptophylla Handel-Mazzetti, Symb. Sin. 7: 252. 1931.
薄叶润楠 bao ye run nan | Lauraceae | Machilus
Persea leptophylla (Handel-Mazzetti) Kostermans.
Large trees, to 28 m tall. Bark grayish brown. Branchlets thick, deeply brown, glabrous. Terminal buds subglobose; outer bud scales broadly ovate, ca. 2 mm, minutely sericeous except for margin, inner longer, yellowish brown sericeous. Petiole slightly thick, 1-3 cm, glabrous; leaf blade abaxially glaucous, obovate-oblong, 14-24(-32) × 3.5-7(-8) cm, thinly papery, abaxially densely appressed sericeous when young, sparsely sericeous to glabrate later, adaxially glabrous, midrib impressed abaxially, conspicuously elevated adaxially, lateral veins 14-20(-24) pairs, reddish when fresh, veinlets sparse, inconspicuous, base cuneate, apex shortly acuminate. Panicles many, congested on base of young branchlet, 8-12(-15) cm, slender, many flowered, densely grayish puberulent. Pedicel ca. 5 mm. Flowers ca. 7 mm, white when fresh. Perianth subequal, oblong-elliptic, farinose-pubescent outside, puberulent or glabrous inside, margin ciliate. Stamens with fascicled hairs at base; glands of 3rd series large, orbicular-reniform, shortly stipitate. Fruit globose, ca. 1 cm in diam.; fruiting pedicel 5-10 mm.
● Valleys, mixed forests; 400-1200 m. Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangsu, Zhejiang.
(责任编辑:徐晔春)
学名(Scientific Name):Machilus leptophylla Hand.-Mazz.
英文名(English Common Name):
别名(Chinese Common Name):薄叶润楠
异名(Synonym):Persea leptophylla (Hand.-Mazz.) Kosterm.
科属(Family & Genus):樟科(Lauraceae)润楠属
形态特征(Description):高大乔木,高达28米;树皮灰褐色。枝粗壮,暗褐色,无毛。顶芽近球形,外部的鳞片宽卵形,长2毫米,有小凸尖,除边缘外具早落的微小绢毛,内面的鳞片较长,有黄褐色绢毛。叶互生或在当年生枝上轮生,倒卵状长圆形,长14-24(32)厘米,宽3.5-7(8)厘米,先端短渐尖,基部楔形,坚纸质,幼时下面全面被贴伏银色绢毛,老时上面深绿,无毛,下面带灰白色,仍有稍疏绢毛,且脉上较密,后渐脱落,中脉在上面凹下,在下面显著凸起,侧脉每边14-20(24)条,略带红色,侧脉间有疏离的横脉,小脉稍疏,连结成网状,不太明显;叶柄稍粗,长1-3厘米,无毛。圆锥花序6-10个,聚生嫩枝的基部,长8-12(15)厘米,柔弱,多花;花通常3朵生在一起,总梗、分枝和花梗略具微细灰色微柔毛;花长7毫米,白色,干后银灰色,花梗丝状,长约5毫米;花被裂片几等长,有透明油腺,长圆状椭圆形,先端急尖,花后平展,背上有粉质柔毛,内面有很稀疏的小柔毛或无毛,边缘有微小睫毛,外轮的稍宽;能育雄蕊药室顶上有短尖,花丝近线状,基部有簇毛;第一、二轮雄蕊花药的上2室由于隔膜不完整往往变成1室,以单片活瓣开裂,下2室较长,顶部斜向上升,第三轮雄蕊长4-5毫米,花药下2室较长,外向,上2室内向,腺体大,圆肾状,有短柄,退化雄蕊长1.8-2毫米,柄圆柱形,上部略增大,先端三角形,顶锐尖。果球形,直径约1厘米;果梗长5-10毫米。
分布(Distribution):产福建、浙江、江苏、湖南、广东、广西、贵州。生于海拔450-1200米阴坡谷地混交林中。
用途(Use):树皮可提树脂;种子可榨油。
引自植物志英文版FOC Vol. 7 Page 204, 214
Machilus leptophylla Handel-Mazzetti, Symb. Sin. 7: 252. 1931.
薄叶润楠 bao ye run nan | Lauraceae | Machilus
Persea leptophylla (Handel-Mazzetti) Kostermans.
Large trees, to 28 m tall. Bark grayish brown. Branchlets thick, deeply brown, glabrous. Terminal buds subglobose; outer bud scales broadly ovate, ca. 2 mm, minutely sericeous except for margin, inner longer, yellowish brown sericeous. Petiole slightly thick, 1-3 cm, glabrous; leaf blade abaxially glaucous, obovate-oblong, 14-24(-32) × 3.5-7(-8) cm, thinly papery, abaxially densely appressed sericeous when young, sparsely sericeous to glabrate later, adaxially glabrous, midrib impressed abaxially, conspicuously elevated adaxially, lateral veins 14-20(-24) pairs, reddish when fresh, veinlets sparse, inconspicuous, base cuneate, apex shortly acuminate. Panicles many, congested on base of young branchlet, 8-12(-15) cm, slender, many flowered, densely grayish puberulent. Pedicel ca. 5 mm. Flowers ca. 7 mm, white when fresh. Perianth subequal, oblong-elliptic, farinose-pubescent outside, puberulent or glabrous inside, margin ciliate. Stamens with fascicled hairs at base; glands of 3rd series large, orbicular-reniform, shortly stipitate. Fruit globose, ca. 1 cm in diam.; fruiting pedicel 5-10 mm.
● Valleys, mixed forests; 400-1200 m. Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangsu, Zhejiang.
(责任编辑:徐晔春)
踩一下[0]
顶一下[0]