圆叶牵牛Ipomoea purpurea
中文名（Chinese Name）：圆叶牵牛
学名（Scientific Name）：Ipomoea purpurea (L.) Roth
英文名（English Common Name）：tall morning-glory
别名（Chinese Common Name）：紫花牵牛
异名（Synonym）：Pharbitis purpurea (Linn.) Voigt Convolvulus purpureus L. Ipomoea chanetii H. Lév. Pharbitis hispida Choisy Pharbitis hispida var. lobata Liou et Y. Ling Ipomoea hirsutula Jacq. f. Ipomoea purpurea var. diversifolia (Lindl.) O'Donell Ipomoea diversifolia Lindl. Ipomoea glandulifera Ruiz & Pav. Pharbitis diversifolius Lindl. Pharbitis nil var. diversifolia (Lindl.) Choisy Convolvulus major
科属（Family & Genus）：旋花科（Convolvulaceae）番薯属
形态特征（Description）：一年生缠绕草本，茎上被倒向的短柔毛杂有倒向或开展的长硬毛。叶圆心形或宽卵状心形，长4-18厘米，宽3.5-16.5厘米，基部圆，心形，顶端锐尖、骤尖或渐尖，通常全缘，偶有3裂，两面疏或密被刚伏毛；叶柄长2-12厘米，毛被与茎同。花腋生，单一或2-5朵着生于花序梗顶端成伞形聚伞花序，花序梗比叶柄短或近等长，长4-12厘米，毛被与茎相同；苞片线形，长6-7毫米，被开展的长硬毛；花梗长1.2-1.5厘米，被倒向短柔毛及长硬毛；萼片近等长，长1.1-1.6厘米，外面3片长椭圆形，渐尖，内面2片线状披针形，外面均被开展的硬毛，基部更密；花冠漏斗状，长4-6厘米，紫红色、红色或白色，花冠管通常白色，瓣中带于内面色深，外面色淡；雄蕊与花柱内藏；雄蕊不等长，花丝基部被柔毛；子房无毛，3室，每室2胚珠，柱头头状；花盘环状。蒴果近球形，直径9-10毫米，3瓣裂。种子卵状三棱形，长约5毫米，黑褐色或米黄色，被极短的糠粃状毛。
分布（Distribution）：原产热带美洲，生于平地至海拔2800米的田边、路边、宅旁或山谷林内。
用途（Use）：FOC Vol. 16 Page 305
Ipomoea purpurea (Linnaeus) Roth, Bot. Abh. 27. 1787.
圆叶牵牛 yuan ye qian niu| Convolvulaceae | Ipomoea
Convolvulus purpureus Linnaeus, Sp. Pl. ed. 2. 1: 219. 1762; Ipomoea chanetii H. Léveillé; I. hispida Zuccarini; Pharbitis hispida Choisy; P. purpurea (Linnaeus) Voigt.
Herbs annual, twining; axial parts short pubescent and long retrorse hirsute. Stems 2-3 m. Petiole 2-12 cm; leaf blade circular-ovate or broadly ovate, 4-18 X 3.5-16.5 cm, ± strigose, base cordate, margin entire or ± 3-lobed, apex acute or ± abruptly acuminate. Inflorescences 1-5-flowered; pedun-cle 4-12 cm; bracts linear, 6-7 mm, spreading hirsute. Pedicel recurved before and after anthesis, 1.2-1.5 cm. Sepals subequal, 1.1-1.6 cm, spreading hirsute abaxially in basal 1/2; outer 3 oblong, apex acuminate; inner 2 linear-lanceolate. Corolla red, reddish purple, or blue-purple, with a fading to white center, funnelform, 4-6 cm, glabrous. Stamens included, unequal; filaments pubescent basally. Pistil included; ovary glabrous, 3-loculed. Stigma 3-lobed. Capsule subglobose, 9-10 mm in diam., 3-valved. Seeds black or straw colored, ovoid-trigonous, glabrous or hilum sparsely pilose. 2n = 30, 32.
Waysides, hedges, fields; 0-2800 m, cultivated or escaped. Most provinces of China [Indonesia, Nepal, Pakistan, Philippines, Sri Lanka; native of North and South America, introduced and naturalized worldwide]
The seeds are used medicinally.
（责任编辑：徐晔春）
学名（Scientific Name）：Ipomoea purpurea (L.) Roth
英文名（English Common Name）：tall morning-glory
别名（Chinese Common Name）：紫花牵牛
异名（Synonym）：Pharbitis purpurea (Linn.) Voigt Convolvulus purpureus L. Ipomoea chanetii H. Lév. Pharbitis hispida Choisy Pharbitis hispida var. lobata Liou et Y. Ling Ipomoea hirsutula Jacq. f. Ipomoea purpurea var. diversifolia (Lindl.) O'Donell Ipomoea diversifolia Lindl. Ipomoea glandulifera Ruiz & Pav. Pharbitis diversifolius Lindl. Pharbitis nil var. diversifolia (Lindl.) Choisy Convolvulus major
科属（Family & Genus）：旋花科（Convolvulaceae）番薯属
形态特征（Description）：一年生缠绕草本，茎上被倒向的短柔毛杂有倒向或开展的长硬毛。叶圆心形或宽卵状心形，长4-18厘米，宽3.5-16.5厘米，基部圆，心形，顶端锐尖、骤尖或渐尖，通常全缘，偶有3裂，两面疏或密被刚伏毛；叶柄长2-12厘米，毛被与茎同。花腋生，单一或2-5朵着生于花序梗顶端成伞形聚伞花序，花序梗比叶柄短或近等长，长4-12厘米，毛被与茎相同；苞片线形，长6-7毫米，被开展的长硬毛；花梗长1.2-1.5厘米，被倒向短柔毛及长硬毛；萼片近等长，长1.1-1.6厘米，外面3片长椭圆形，渐尖，内面2片线状披针形，外面均被开展的硬毛，基部更密；花冠漏斗状，长4-6厘米，紫红色、红色或白色，花冠管通常白色，瓣中带于内面色深，外面色淡；雄蕊与花柱内藏；雄蕊不等长，花丝基部被柔毛；子房无毛，3室，每室2胚珠，柱头头状；花盘环状。蒴果近球形，直径9-10毫米，3瓣裂。种子卵状三棱形，长约5毫米，黑褐色或米黄色，被极短的糠粃状毛。
分布（Distribution）：原产热带美洲，生于平地至海拔2800米的田边、路边、宅旁或山谷林内。
用途（Use）：FOC Vol. 16 Page 305
Ipomoea purpurea (Linnaeus) Roth, Bot. Abh. 27. 1787.
圆叶牵牛 yuan ye qian niu| Convolvulaceae | Ipomoea
Convolvulus purpureus Linnaeus, Sp. Pl. ed. 2. 1: 219. 1762; Ipomoea chanetii H. Léveillé; I. hispida Zuccarini; Pharbitis hispida Choisy; P. purpurea (Linnaeus) Voigt.
Herbs annual, twining; axial parts short pubescent and long retrorse hirsute. Stems 2-3 m. Petiole 2-12 cm; leaf blade circular-ovate or broadly ovate, 4-18 X 3.5-16.5 cm, ± strigose, base cordate, margin entire or ± 3-lobed, apex acute or ± abruptly acuminate. Inflorescences 1-5-flowered; pedun-cle 4-12 cm; bracts linear, 6-7 mm, spreading hirsute. Pedicel recurved before and after anthesis, 1.2-1.5 cm. Sepals subequal, 1.1-1.6 cm, spreading hirsute abaxially in basal 1/2; outer 3 oblong, apex acuminate; inner 2 linear-lanceolate. Corolla red, reddish purple, or blue-purple, with a fading to white center, funnelform, 4-6 cm, glabrous. Stamens included, unequal; filaments pubescent basally. Pistil included; ovary glabrous, 3-loculed. Stigma 3-lobed. Capsule subglobose, 9-10 mm in diam., 3-valved. Seeds black or straw colored, ovoid-trigonous, glabrous or hilum sparsely pilose. 2n = 30, 32.
Waysides, hedges, fields; 0-2800 m, cultivated or escaped. Most provinces of China [Indonesia, Nepal, Pakistan, Philippines, Sri Lanka; native of North and South America, introduced and naturalized worldwide]
The seeds are used medicinally.
（责任编辑：徐晔春）
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