织梦CMS - 轻松建站从此开始!

花卉图片网

当前位置: 主页 > 乔木 >

大叶木莲 Manglietia dandyi

时间:2013-10-15 13:20来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):大叶木莲 学名( Scientific Name ): Manglietia dandyi (Gagnep.) Dandy 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Manglietia megaphylla Hu et Cheng Magnolia dandyi Gagnep
中文名(Chinese Name):大叶木莲
学名(Scientific Name):Manglietia dandyi (Gagnep.) Dandy 
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Manglietia megaphylla Hu et Cheng  Magnolia dandyi Gagnep.  Magnolia megaphylla (Hu et W. C. Cheng) V. S. Kunar
科属(Family & Genus):木兰科(Magnoliaceae)木莲属
形态特征(Description):乔木,高达30-40米,胸径80-100厘米;小枝、叶下面、叶柄、托叶、果柄、佛焰苞状苞片均密被锈褐色长绒毛。叶革质,常5-6片集生于枝端,倒卵形,先端短尖,2/3以下渐狭,基部楔形,长25-50厘米,宽10-20厘米,上面无毛,侧脉每边20-22条,网脉稀疏,干时两面均凸起;叶柄长2-3厘米;托叶痕为叶柄长的1/3-2/3 。花梗粗壮,长3.5-4厘米,径约1.5厘米,紧靠花被下具1厚约3毫米的佛焰苞状苞片;花被片厚肉质,9-10片,3轮,外轮3片倒卵状长圆形,长4.5-5厘米,宽2.5-2.8厘米,腹面具约7条纵纹,内面2轮较狭小;雄蕊群被长柔毛,雄蕊长1.2-1.5厘米,花药长0.8-1厘米,药室分离,宽约1毫米,药隔伸出一成长约1毫米的三角尖;花丝宽扁,长约2毫米;雌蕊群卵圆形,长2-2.5厘米,具60-75枚雌蕊,无毛;雌蕊长约1.5厘米,具1纵沟直至花柱末端。聚合果卵球形或长圆状卵圆形,长 6.5-11厘米;蓇葖长2.5-3厘米,顶端尖,稍向外弯,沿背缝及腹缝开裂;果梗粗壮,长1-3厘米,直径1-1.3厘米。花期6月,果期9-10月。
分布(Distribution):产广西、云南。生于海拔450-1500米的山地林中,沟谷两旁。
用途(Use):木材纹理细致,材质轻软,加工容易,耐久,供建筑、家具、胶合板等用材。
引自中国植物志英文版:FOC Vol. 7 Page 50, 53, 54, 55    
Manglietia dandyi (Gagnepain) Dandy in Praglowski, World Pollen Spore Fl. 3(Magnoliaceae): 5. 1974.
大叶木莲 da ye mu lian| Magnoliaceae  | Manglietia
Magnolia dandyi Gagnepain, Notul. Syst. (Paris) 8: 63. 1939; M. megaphylla (Hu & W. C. Cheng) V. S. Kumar; Manglietia megaphylla Hu & W. C. Cheng; ?M. sinoconifera F. N. Wei.
Trees, 30-50 m tall, 80-100 cm d.b.h. Branches, leaf blade abaxial surfaces, petioles, stipules, peduncles, and spathaceous bracts densely long ferruginous tomentose. Stipular scar 1/3-2/3 as long as petiole. Leaves usually 5 or 6 clustered on branch apex; petiole 2-3 cm; leaf blade obovate, 25-50 × 10-20 cm, leathery, basal ca. 2/3 narrowed, adaxially glabrous, secondary veins 20-22 on each side of midvein, reticulate veins sparse and prominent on both surfaces when dry, base cuneate, apex acute. Brachyblasts thick and strong, 3.5-4 × ca. 1.5 cm; spathaceous bract 1, ca. 3 mm basal to tepals. Tepals 9 or 10, in 3 whorls, fleshy; tepals of outer whorl obovate-oblong, 4.5-5 × 2.5-2.8 cm, adaxially ca. 7-striated; tepals of inner 2 whorls smaller. Stamens villous, 1.2-1.5 cm; filaments flat, ca. 2 mm; connective exserted with a ca. 1 mm triangular appendage; anthers 8-10 mm, thecae distinct and ca. 1 mm wide. Gynoecium ovoid, 2-2.5 cm; carpels 60-75, ca. 1.5 cm, glabrous, with 1 furrow reaching to style apex. Fruiting brachyblasts thick and strong, 1-3 × 1-1.3 cm. Fruit ovoid to long ellipsoid, 6.5-11 cm; mature carpels 2.5-3 cm, extrorsely slightly curved, dehiscent along dorsal and ventral sutures, apex acute. Fl. Jun, fr. Sep-Dec. 2n = 38.
Evergreen broad-leaved forests; 400-1500 m. W Guangxi, SE Yunnan [Laos, Vietnam].
Manglietia admirabilis Y. W. Law & R. Z. Zhou (in Y. H. Liu, Magnolias China, 120. 2004) probably belongs here but was not validly published because no Latin description or diagnosis was provided and no type was indicated (Vienna Code, Art. 36.1 and 37.1).
The status of Manglietia sinoconifera is uncertain because the authors have been unable to see the holotype, although it may be conspecific with M. dandyi.
Manglietia dandyi is grown as an ornamental and used for timber.


(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
栏目列表
推荐内容