钝叶樟Cinnamomum obtusifolium
中文名（Chinese Name）：钝叶樟
学名（Scientific Name）：Cinnamomum obtusifolium (Buch.-Ham.) Sweet
英文名（English Common Name）：
别名（Chinese Common Name）：土桂皮、山桂
异名（Synonym）：Cinnamomum obtusifolium (Roxb.) Nees Laurus bejolghota Buch.-Ham. Laurus obtusifolia Roxb. Cinnamomum bazania (Buch.-Ham.) Nees Cinnamomum sikkimense Lukman. Cinnamomum van-houttei Lukman. Laurus bazania Buch.-Ham. Laurus bezolghota Buch.-Ham. ex Wall.
科属（Family & Genus）：樟科（Lauraceae）樟属
形态特征（Description）：小至大乔木，高5-25米，胸径达30厘米；树皮青绿色，有香气。枝条常对生，粗壮，小枝圆柱形或钝四棱形，干时红褐色，初时被微柔毛，后变无毛。芽小，卵珠形，芽鳞密被绢状毛。叶近对生，椭圆状长圆形，长12-30厘米，宽4-9厘米，先端钝、急尖或渐尖，基部近圆形或渐狭，硬革质，上面绿色，光亮，下面淡绿或黄绿色，多少带白色，两面极无毛，三出脉或离基三出脉，侧脉自叶基0.5-1.5厘米处生出，斜伸，与中脉直贯叶端，在上面略凹陷或凸起，下面明显凸起，横脉及细脉在上面不明显，下面稍明显，呈网状，叶柄粗壮，长1-1.5厘米，腹平背凸。圆锥花序生于枝条上部叶腋内，长13-16厘米，多花密集，多分枝，分枝长约3厘米，总梗长7-11厘米，与各级序轴略被灰色短柔毛。花黄色，长达6毫米；花梗长4-6毫米，被灰色短柔毛。花被筒短，倒锥形，长约1毫米；花被裂片6，卵状长圆形，长5毫米，宽2.5毫米，先端锐尖，两面被灰色短柔毛但顶端近无毛。能育雄蕊9，第一、二轮雄蕊长约3.5毫米，花药卵圆状长圆形，与花丝近等长，药室内向，花丝无腺体，第三轮雄蕊长约3.7毫米，花药较狭长，长圆形，长约1.7毫米，花丝扁平，长达2毫米，近基部有一对具长柄的圆状肾形腺体。退化雄蕊3，位于最内轮，明显，长3毫米，箭头状正三角形，具长柄。子房长圆形，长1.5毫米，花柱细长，长达3毫米，柱头盘状。果椭圆形，长1.3厘米，宽8毫米，鲜时绿色；果托黄带紫红，稍增大，倒圆锥形，顶端宽达7毫米，具齿裂，齿顶端截平；果梗紫色，略增粗。花期3-4月，果期5-7月。
分布（Distribution）：产云南、广东。生于海拔600-1780米山坡、沟谷的疏林或密林中。印度、孟加拉、缅甸、老挝、越南也有。
用途（Use）：本种木材纹理通直，结构均匀细致，适于作建筑、一般较好的家具、农具等用材。
引自植物志英文版：FOC Vol. 7 Page 170, 180
Cinnamomum bejolghota (Buchanan-Hamilton) Sweet, Hort. Brit. 344. 1827.
钝叶桂 dun ye gui | Lauraceae | Cinnamomum
Laurus bejolghota Buchanan-Hamilton, Trans. Linn. Soc. London 13: 559. 1822; Cinnamomum obtusifolium (Roxburgh) Nees; L. obtusifolia Roxburgh.
Small to large trees, 5-25 m tall, up to 30 cm d.b.h. Bark green, scented. Branches always opposite, robust; branchlets terete or obtusely tetragonous, red-brown when dry, puberulent initially soon glabrate. Buds small, ovoid; bud scales densely sericeous. Leaves subopposite; petiole robust, 1-1.5 cm, plano-convex; leaf blade greenish or yellow-green and ± glaucous abaxially, green and shiny adaxially, elliptic-oblong, 12-30 × 4-9 cm, thickly leathery, glabrous on both surfaces, trinerved or triplinerved, basal lateral veins arising 0.5-1.5 cm above leaf base, oblique, lateral veins and midrib extending to leaf apex, conspicuously elevated abaxially, slightly impressed or elevated adaxially, transverse veins and veinlets reticulate, slightly conspicuous abaxially, inconspicuous adaxially, base subrounded or attenuate, margin entire, apex obtuse, acute, or acuminate. Panicle axillary on upper part of branchlet, 13-16 cm, densely many flowered, much branched; branches ca. 3 cm; peduncle 7-11 cm, peduncle and rachis sparsely gray pubescent. Pedicels 4-6 mm, gray pubescent. Flowers yellow, up to 6 mm. Perianth tube short, obconical, ca. 1 mm; perianth lobes 6, ovate-oblong, ca. 5 × 2.5 mm, acute, gray pubescent except apex subglabrous on both surfaces. Fertile stamens 9, ca. 3.5 mm (of 1st and 2nd whorls) or ca. 3.7 mm (of 3rd whorl); filaments complanate, those of 3rd whorl each with 2 long stalked orbicular-reniform glands, others glandless; anthers of 1st and 2nd whorls ovate-oblong, almost as long as filaments and with introrse cells, those of 3rd whorl narrower, oblong, ca. 1.7 mm, with extrorse cells. Staminodes 3, conspicuous, sagittate-deltoid, ca. 3 mm, long stalked. Ovary oblong, ca. 1.5 mm; style slender, up to 3 mm; stigma discoid. Fruit ellipsoid, ca. 1.3 × 0.8 cm, green when fresh; perianth cup in fruit yellow but purple-red tinged, somewhat dilated, obconical, apex up to 7 mm wide, dentate, teeth truncate; fruit stalk purple, somewhat dilated. Fl. Mar-Apr, fr. May-Jul.
Sparse or dense forests on mountain slopes and in valleys; 600-1800 m. S Guangdong, Hainan, S Yunnan [Bangladesh, Bhutan, India, Laos, Myanmar, Nepal, Thailand, Vietnam].
The wood is finely grained, somewhat soft, and used for house construction. Volatile oil is derived from the leafy branchlets, roots, and bark by steam distillation. The bark powder is the source of an important spice, used especially by local people in Hainan.
（责任编辑：徐晔春）
学名（Scientific Name）：Cinnamomum obtusifolium (Buch.-Ham.) Sweet
英文名（English Common Name）：
别名（Chinese Common Name）：土桂皮、山桂
异名（Synonym）：Cinnamomum obtusifolium (Roxb.) Nees Laurus bejolghota Buch.-Ham. Laurus obtusifolia Roxb. Cinnamomum bazania (Buch.-Ham.) Nees Cinnamomum sikkimense Lukman. Cinnamomum van-houttei Lukman. Laurus bazania Buch.-Ham. Laurus bezolghota Buch.-Ham. ex Wall.
科属（Family & Genus）：樟科（Lauraceae）樟属
形态特征（Description）：小至大乔木，高5-25米，胸径达30厘米；树皮青绿色，有香气。枝条常对生，粗壮，小枝圆柱形或钝四棱形，干时红褐色，初时被微柔毛，后变无毛。芽小，卵珠形，芽鳞密被绢状毛。叶近对生，椭圆状长圆形，长12-30厘米，宽4-9厘米，先端钝、急尖或渐尖，基部近圆形或渐狭，硬革质，上面绿色，光亮，下面淡绿或黄绿色，多少带白色，两面极无毛，三出脉或离基三出脉，侧脉自叶基0.5-1.5厘米处生出，斜伸，与中脉直贯叶端，在上面略凹陷或凸起，下面明显凸起，横脉及细脉在上面不明显，下面稍明显，呈网状，叶柄粗壮，长1-1.5厘米，腹平背凸。圆锥花序生于枝条上部叶腋内，长13-16厘米，多花密集，多分枝，分枝长约3厘米，总梗长7-11厘米，与各级序轴略被灰色短柔毛。花黄色，长达6毫米；花梗长4-6毫米，被灰色短柔毛。花被筒短，倒锥形，长约1毫米；花被裂片6，卵状长圆形，长5毫米，宽2.5毫米，先端锐尖，两面被灰色短柔毛但顶端近无毛。能育雄蕊9，第一、二轮雄蕊长约3.5毫米，花药卵圆状长圆形，与花丝近等长，药室内向，花丝无腺体，第三轮雄蕊长约3.7毫米，花药较狭长，长圆形，长约1.7毫米，花丝扁平，长达2毫米，近基部有一对具长柄的圆状肾形腺体。退化雄蕊3，位于最内轮，明显，长3毫米，箭头状正三角形，具长柄。子房长圆形，长1.5毫米，花柱细长，长达3毫米，柱头盘状。果椭圆形，长1.3厘米，宽8毫米，鲜时绿色；果托黄带紫红，稍增大，倒圆锥形，顶端宽达7毫米，具齿裂，齿顶端截平；果梗紫色，略增粗。花期3-4月，果期5-7月。
分布（Distribution）：产云南、广东。生于海拔600-1780米山坡、沟谷的疏林或密林中。印度、孟加拉、缅甸、老挝、越南也有。
用途（Use）：本种木材纹理通直，结构均匀细致，适于作建筑、一般较好的家具、农具等用材。
引自植物志英文版：FOC Vol. 7 Page 170, 180
Cinnamomum bejolghota (Buchanan-Hamilton) Sweet, Hort. Brit. 344. 1827.
钝叶桂 dun ye gui | Lauraceae | Cinnamomum
Laurus bejolghota Buchanan-Hamilton, Trans. Linn. Soc. London 13: 559. 1822; Cinnamomum obtusifolium (Roxburgh) Nees; L. obtusifolia Roxburgh.
Small to large trees, 5-25 m tall, up to 30 cm d.b.h. Bark green, scented. Branches always opposite, robust; branchlets terete or obtusely tetragonous, red-brown when dry, puberulent initially soon glabrate. Buds small, ovoid; bud scales densely sericeous. Leaves subopposite; petiole robust, 1-1.5 cm, plano-convex; leaf blade greenish or yellow-green and ± glaucous abaxially, green and shiny adaxially, elliptic-oblong, 12-30 × 4-9 cm, thickly leathery, glabrous on both surfaces, trinerved or triplinerved, basal lateral veins arising 0.5-1.5 cm above leaf base, oblique, lateral veins and midrib extending to leaf apex, conspicuously elevated abaxially, slightly impressed or elevated adaxially, transverse veins and veinlets reticulate, slightly conspicuous abaxially, inconspicuous adaxially, base subrounded or attenuate, margin entire, apex obtuse, acute, or acuminate. Panicle axillary on upper part of branchlet, 13-16 cm, densely many flowered, much branched; branches ca. 3 cm; peduncle 7-11 cm, peduncle and rachis sparsely gray pubescent. Pedicels 4-6 mm, gray pubescent. Flowers yellow, up to 6 mm. Perianth tube short, obconical, ca. 1 mm; perianth lobes 6, ovate-oblong, ca. 5 × 2.5 mm, acute, gray pubescent except apex subglabrous on both surfaces. Fertile stamens 9, ca. 3.5 mm (of 1st and 2nd whorls) or ca. 3.7 mm (of 3rd whorl); filaments complanate, those of 3rd whorl each with 2 long stalked orbicular-reniform glands, others glandless; anthers of 1st and 2nd whorls ovate-oblong, almost as long as filaments and with introrse cells, those of 3rd whorl narrower, oblong, ca. 1.7 mm, with extrorse cells. Staminodes 3, conspicuous, sagittate-deltoid, ca. 3 mm, long stalked. Ovary oblong, ca. 1.5 mm; style slender, up to 3 mm; stigma discoid. Fruit ellipsoid, ca. 1.3 × 0.8 cm, green when fresh; perianth cup in fruit yellow but purple-red tinged, somewhat dilated, obconical, apex up to 7 mm wide, dentate, teeth truncate; fruit stalk purple, somewhat dilated. Fl. Mar-Apr, fr. May-Jul.
Sparse or dense forests on mountain slopes and in valleys; 600-1800 m. S Guangdong, Hainan, S Yunnan [Bangladesh, Bhutan, India, Laos, Myanmar, Nepal, Thailand, Vietnam].
The wood is finely grained, somewhat soft, and used for house construction. Volatile oil is derived from the leafy branchlets, roots, and bark by steam distillation. The bark powder is the source of an important spice, used especially by local people in Hainan.
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