银边翠Euphorbia marginata
中文名（Chinese Name）：银边翠
学名（Scientific Name）：Euphorbia marginata Pursh
英文名（English Common Name）：snow on the mountain
别名（Chinese Common Name）：高山积雪
异名（Synonym）：Tithymalus variegatus (Sims) Haw. Lepadena leucoloma (Raf.) Raf. Lepadena marginata (Pursh) Nieuwl. Tithymalus marginatus (Pursh) Cockerell Agaloma marginata (Pursh) Á.Löve & D.Löve Dichrophyllum marginatum (Pursh) Klotzsch & Garcke Dichrophyllum variegatum (Sims) Klotzsch & Garcke Euphorbia bejariensis DC. Euphorbia leucoloma Raf. Tithymalus marginatus f. inornata Daniels Tithymalus marginatus var. tetramerus Cockerell Euphorbia marginata var. uloleuca Engelm. & A.Gray
科属（Family & Genus）：大戟科（Euphorbiaceae）大戟属
形态特征（Description）：一年生草本。根纤细，极多分枝，长可达20厘米以上，直径3-5毫米。茎单一，自基部向上极多分枝，高可达60-80厘米，直径3-5毫米，光滑，常无毛，有时被柔毛。叶互生，椭圆形，长5-7厘米，宽约3厘米，先端钝，具小尖头，基部平截状圆形，绿色，全缘；无柄或近无柄；总苞叶2-3枚，椭圆形，长3-4厘米，宽1-2厘米，先端圆，基部渐狭。全缘，绿色具白色边；伞幅2-3，长1-4厘米，被柔毛或近无毛；苞叶椭圆形，长1-2厘米，宽5-7 (9)毫米，先端圆，基部渐狭，近无柄花序单生于苞叶内或数个聚伞状着生，基部具柄，柄长3-5毫米，密被柔毛；总苞钟状，高5-6毫米，直径约4毫米，外部被柔毛，边缘5裂，裂片三角形至圆形，尖至微凹，边缘与内侧均被柔毛；腺体4,半圆形，边缘具宽大的白色附属物，长与宽均超过腺体。雄花多数，伸出总苞外；苞片丝状；雌花1枚，子房柄较长，长达3-5毫米，伸出总苞之外，被柔毛；子房密被柔毛；花柱3，分离；柱头2浅裂。蒴果近球状，长与直径均约5.5毫米，具长柄，长达3-7毫米，被柔毛；花柱宿存；果成熟时分裂为3个分果爿。种子圆柱状，淡黄色至灰褐色，长3.5-4毫米，直径2.8-3毫米。被瘤或短刺或不明显的突起；无种阜。花果期6-9月。
分布（Distribution）：原产北美，广泛栽培于旧大陆；我国大多数省区市均有栽培。
用途（Use）：FOC Vol. 11 Page 289, 297
Euphorbia marginata Pursh, Fl. Amer. Sept. 2: 607. 1814.
银边翠 yin bian cui | Euphorbiaceae | Euphorbia
Herbs, annual, up to 60-90 cm tall. Root fibrous, 3-5 mm thick, with many rootlets. Stem single, many from base, 3-5 mm thick, smooth, usually glabrous, sometimes less pilose. Leaves alternate, sessile or subsessile; leaf blade elliptic, 5-7 × ca. 3 cm, green, base truncate-rounded, margin entire, apex obtuse, with small tip. Primary involucral leaves 2 or 3, green with white margin, elliptic, 3-4 × 1-2 cm, base attenuate, margin entire, apex rounded, primary rays 2 or 3, 1-4 cm, pubescent or subglabrous; secondary involucral leaves elliptic, 1-2 cm × 5-7(-9) mm, attenuate at base, subsessile, apex obtuse. Cyathia single from axils of involucral leaves or numerous clustered, peduncle 3-5 mm, densely pilose; involucre campanulate, 5-6 × ca. 4 mm, pubescent outside, 5 lobes, lobes triangular to rounded, apex acute to emarginate, pubescent inside; glands 4, rounded, appendages white, longer and wider than gland. Male flowers many, exserted from involucre; bracts linear. Female flower: pedicel 3-5 mm, exserted from cup; ovary densely pilose; styles free, persistent; stigma slightly 2-lobed. Capsule subglobose, ca. 5.5 × 5.5 mm, pilose; fruiting pedicel 3-7 mm. Seeds globose-terete, 3.5-4 × 2.8-3 mm, light yellow to gray-brown, with tuberose or inconspicuous enation; caruncle absent. Fl. and fr. Jun-Sep.
Escaped and naturalized. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangsu, Jiangxi, Ningxia, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang; also cultivated in N China [native to North America; naturalized in the Old World].
Euphorbia marginata is sometimes grown for the cut flower trade.
（责任编辑：徐晔春）
学名（Scientific Name）：Euphorbia marginata Pursh
英文名（English Common Name）：snow on the mountain
别名（Chinese Common Name）：高山积雪
异名（Synonym）：Tithymalus variegatus (Sims) Haw. Lepadena leucoloma (Raf.) Raf. Lepadena marginata (Pursh) Nieuwl. Tithymalus marginatus (Pursh) Cockerell Agaloma marginata (Pursh) Á.Löve & D.Löve Dichrophyllum marginatum (Pursh) Klotzsch & Garcke Dichrophyllum variegatum (Sims) Klotzsch & Garcke Euphorbia bejariensis DC. Euphorbia leucoloma Raf. Tithymalus marginatus f. inornata Daniels Tithymalus marginatus var. tetramerus Cockerell Euphorbia marginata var. uloleuca Engelm. & A.Gray
科属（Family & Genus）：大戟科（Euphorbiaceae）大戟属
形态特征（Description）：一年生草本。根纤细，极多分枝，长可达20厘米以上，直径3-5毫米。茎单一，自基部向上极多分枝，高可达60-80厘米，直径3-5毫米，光滑，常无毛，有时被柔毛。叶互生，椭圆形，长5-7厘米，宽约3厘米，先端钝，具小尖头，基部平截状圆形，绿色，全缘；无柄或近无柄；总苞叶2-3枚，椭圆形，长3-4厘米，宽1-2厘米，先端圆，基部渐狭。全缘，绿色具白色边；伞幅2-3，长1-4厘米，被柔毛或近无毛；苞叶椭圆形，长1-2厘米，宽5-7 (9)毫米，先端圆，基部渐狭，近无柄花序单生于苞叶内或数个聚伞状着生，基部具柄，柄长3-5毫米，密被柔毛；总苞钟状，高5-6毫米，直径约4毫米，外部被柔毛，边缘5裂，裂片三角形至圆形，尖至微凹，边缘与内侧均被柔毛；腺体4,半圆形，边缘具宽大的白色附属物，长与宽均超过腺体。雄花多数，伸出总苞外；苞片丝状；雌花1枚，子房柄较长，长达3-5毫米，伸出总苞之外，被柔毛；子房密被柔毛；花柱3，分离；柱头2浅裂。蒴果近球状，长与直径均约5.5毫米，具长柄，长达3-7毫米，被柔毛；花柱宿存；果成熟时分裂为3个分果爿。种子圆柱状，淡黄色至灰褐色，长3.5-4毫米，直径2.8-3毫米。被瘤或短刺或不明显的突起；无种阜。花果期6-9月。
分布（Distribution）：原产北美，广泛栽培于旧大陆；我国大多数省区市均有栽培。
用途（Use）：FOC Vol. 11 Page 289, 297
Euphorbia marginata Pursh, Fl. Amer. Sept. 2: 607. 1814.
银边翠 yin bian cui | Euphorbiaceae | Euphorbia
Herbs, annual, up to 60-90 cm tall. Root fibrous, 3-5 mm thick, with many rootlets. Stem single, many from base, 3-5 mm thick, smooth, usually glabrous, sometimes less pilose. Leaves alternate, sessile or subsessile; leaf blade elliptic, 5-7 × ca. 3 cm, green, base truncate-rounded, margin entire, apex obtuse, with small tip. Primary involucral leaves 2 or 3, green with white margin, elliptic, 3-4 × 1-2 cm, base attenuate, margin entire, apex rounded, primary rays 2 or 3, 1-4 cm, pubescent or subglabrous; secondary involucral leaves elliptic, 1-2 cm × 5-7(-9) mm, attenuate at base, subsessile, apex obtuse. Cyathia single from axils of involucral leaves or numerous clustered, peduncle 3-5 mm, densely pilose; involucre campanulate, 5-6 × ca. 4 mm, pubescent outside, 5 lobes, lobes triangular to rounded, apex acute to emarginate, pubescent inside; glands 4, rounded, appendages white, longer and wider than gland. Male flowers many, exserted from involucre; bracts linear. Female flower: pedicel 3-5 mm, exserted from cup; ovary densely pilose; styles free, persistent; stigma slightly 2-lobed. Capsule subglobose, ca. 5.5 × 5.5 mm, pilose; fruiting pedicel 3-7 mm. Seeds globose-terete, 3.5-4 × 2.8-3 mm, light yellow to gray-brown, with tuberose or inconspicuous enation; caruncle absent. Fl. and fr. Jun-Sep.
Escaped and naturalized. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangsu, Jiangxi, Ningxia, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang; also cultivated in N China [native to North America; naturalized in the Old World].
Euphorbia marginata is sometimes grown for the cut flower trade.
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