织梦CMS - 轻松建站从此开始!

花卉图片网

当前位置: 主页 > 灌木 >

线萼蜘蛛花Silvianthus tonkinensis

时间:2013-11-08 12:40来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):线萼蜘蛛花 学名( Scientific Name ): Silvianthus tonkinensis (Gagnep.) Ridsd. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Quiducia tonkinensis Gagnep. Silvianthus bracte
中文名(Chinese Name):线萼蜘蛛花
学名(Scientific Name):Silvianthus tonkinensis (Gagnep.) Ridsd.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Quiducia tonkinensis Gagnep.  Silvianthus bracteatus subsp. clerodendroides (Airy Shaw) H. W. Li  Silvianthus clerodendroides Airy Shaw
科属(Family & Genus):茜草科(Rubiaceae)蜘蛛花属
形态特征(Description):小灌木或草本,高1-2米或过之,全体无毛;茎圆柱状,中空。叶大,纸质,椭圆形、卵状椭圆形或有时阔椭圆形,长10-30厘米,通常15-25厘米,宽5-20厘米,顶端短尖或短渐尖,基部通常阔楔尖,很少稍钝或微下延,边缘齿缺常不很明显;侧脉每边9-16条,通常约10条,末端连接成边脉,干时两面稍凸起;叶柄长1-4厘米,有时可达7厘米,干时有纵皱纹。聚伞花序密聚成头状,直径1-4厘米,总花梗通常长不及1厘米,但有时可达5厘米;苞片线形,长4-6毫米;花梗长约3毫米;萼管倒圆锥状,长2-3毫米,裂片线形,长9-11毫米,宽1-1.5毫米,常钝头,有纵脉纹;花冠通常黄色或淡红色,间有紫红色(均据采集者记录),冠管长12-13毫米,喉部稍扩大,外面无毛,里面被柔毛,裂片圆,长5-6毫米,里面有小乳突;雄蕊着生在冠管近中部,花药长约4.5毫米;花柱长约11毫米。蒴果倒圆锥状,直径6-9毫米,成熟时紫色;种子黑色,长3-3.5毫米,覆有白色针状条纹。花期3-7月,果期10-12月。
分布(Distribution):产云南,生于海拔900-1500米处的林下沟谷边。老挝和越南也有。
用途(Use):
引自中国植物志英文版:FOC Vol. 19 Page 479   
Silvianthus tonkinensis (Gagnepain) Ridsdale, Blumea. 24: 42. 1978.
线萼蜘蛛花 xian e zhi zhu hua| Carlemanniaceae  | Silvianthus
Quiducia tonkinensis Gagnepain, Bull. Soc. Bot. France 95: 33. 1948; Silvianthus bracteatus J. D. Hooker subsp. clerodendroides (Airy Shaw) H. W. Li; S. bracteatus subsp. tonkinensis (Gagnepain) H. W. Li; S. clerodendroides Airy Shaw.
Subshrubs, 1-2(-4) m tall, glabrous. Stems terete. Petiole 1-4(-7) mm, rugose when dry; leaf blade elliptic, ovate-elliptic, or sometimes broadly elliptic, large, (10-)15-25(-30) × 5-20 cm, drying papery, lateral veins (9 or)10(-16) pairs, joining in an intramarginal vein, slightly prominent on both surfaces when dry, base usually broadly cuneate, rarely slightly obtuse, or slightly decurrent, margin often shallowly dentate-incised, apex acute to shortly acuminate. Cymes 1-4 cm in diam.; peduncles usually shorter than 1 cm, sometimes to 5 cm; bracts linear, 4-6 mm. Flowers heterostylous. Pedicel ca. 3 mm. Calyx tube obconical, 2-3 mm; lobes linear, 9-11 × 1-1.5 mm, longitudinally veined, often obtuse. Corolla usually yellow or pale red, occasionally purplish red (based on literature); tube 1.2-1.3 cm, throat slightly expanded, outside glabrous, inside with soft hairs; lobes orbicular, 5-6 mm, inside papillose. Stamens inserted near middle of corolla tube; anthers ca. 4.5 mm. Style ca. 1.1 cm. Capsule purple at maturity, obconical, 6-9 mm in diam. Seeds black, 3-3.5 mm, white aciculate striate-rugose. Fl. Mar-Jul, fr. Oct-Dec.
Forests in valleys, streamsides in evergreen hillside forests; 900-1500 m. Yunnan [Laos, N Thailand, N Vietnam].
This species was confused with Silvianthus bracteatus by some authors.
 






(责任编辑:徐晔春)
顶一下
(2)
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