织梦CMS - 轻松建站从此开始!

花卉图片网

当前位置: 主页 > 兰科植物 >

喉红石斛Dendrobium christyanum

时间:2013-10-23 18:44来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):喉红石斛 学名( Scientific Name ): Dendrobium christyanum Rchb. f. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Dendrobium margaritaceum Finet 科属( Family Genus ): 兰
中文名(Chinese Name):喉红石斛
学名(Scientific Name):Dendrobium christyanum Rchb. f.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Dendrobium margaritaceum Finet
科属(Family & Genus):兰科(Orchidaceae)石斛属
形态特征(Description):茎直立或斜立,粗短,纺锤形或短棒状,长2-5厘米,中部粗3-18毫米,具许多波状纵条棱和2-5节,节间长5-10毫米。叶2-4枚,近顶生,革质,舌形,卵状披针形或长圆形,长15-40毫米,宽10-13毫米,先端钝并且不等侧2裂,基部下延为抱茎的鞘,两面和叶鞘均密被黑色短毛,至少幼时如此。总状花序顶生或近茎的顶端发出,花序轴长5-7毫米,具1-3朵花;花序柄长2-3毫米;花苞片膜质,卵状披针形,长7-10毫米;花梗和子房长约2.5厘米;花开展,除唇瓣的中裂片金黄色和侧裂片的内面橘红色外,均为白色;中萼片卵状披针形,长约2.5厘米,宽约1厘米,先端急尖,具7条脉;侧萼片斜卵状披针形,长2.5厘米,宽1厘米,先端急尖,具7-8条脉;萼囊宽圆锥形,长约1厘米;花瓣倒卵形,等长于中萼片而较宽,先端近圆形,具5条脉;唇瓣近提琴形,长约3厘米,3裂;侧裂片近半卵形;中裂片近肾形,下弯,先端浅2裂;唇盘具5条脊突,在脊突上和脊突之间具有不规则的疣突;蕊柱长约5毫米;药帽圆锥形,密被乳突。花期4-6月。
分布(Distribution):产云南,生于海拔850米左右的山地林缘树干上,印度、泰国、缅甸及越南也有。
用途(Use):
引自中国植物志英文版:FOC Vol. 25 Page 369, 391   
Dendrobium christyanum H. G. Reichenbach, Gard. Chron., n.s.,. 1: 178. 1882.
毛鞘石斛 mao qiao shi hu| Orchidaceae  | Dendrobium
Dendrobium margaritaceum Finet.
Stems erect, subclavate to fusiform, 2-4[-8] cm, 6-9 mm in diam., unbranched, with few nodes. Leaves 2 or 3, subterminal, long-lasting, ovate-lanceolate or oblong, 3-4(-4.5) × ca. 1 cm, abaxial surface and sheath with black hairs, apex obtuse and unequally 2-lobed. Inflorescences subterminal, 1- or 2-flowered. Flowers spreading, white, lip with orange center. Dorsal sepal ovate to ovate-lanceolate, ca. 20 × 8-10 mm, acute; lateral sepals similar to dorsal sepal; mentum broadly conic, ca. 10 mm. Petals elliptic-oblong, ca. 20 mm, subacute; lip ca. 25 mm, margin undulate, apex 3-lobed; mid-lobe emarginate at apex; disk with 3 granulose lamellae.
Epiphytic at forest margins; 800-1200 m. Yunnan [Thailand, Vietnam].
The altitudinal range is based on records from Vietnam.
The Chinese material has shorter and relatively broader stems than material from elsewhere.
 
(责任编辑:徐晔春)
织梦二维码生成器
顶一下
(1)
100%
踩一下
(0)
0%
------分隔线----------------------------
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
用户名: 验证码:点击我更换图片