학명 : Euphorbia tirucalli L.
분류 : Euphorbiaceae
국내 유통명: 청산호(국표식에 등재 안됨)
중국어명 : 绿玉树
일어명 : ミドリサンゴ（緑珊瑚)
영명 : aveloz, Indian tree spurge, naked lady, pencil tree, pencil cactus, milk bush
사진: 2020.10.30 도봉구 방학동
FOC
Euphorbia tirucalli Linnaeus, Sp. Pl. 1: 452. 1753.
绿玉树 lü yu shu
(설명)
Trees or shrubs, 2-6 m tall, dioecious, eventually forming trunk, 10-25 cm d.b.h.; bark rugose, gray or light. Stems green, succulent, very finely longitudinally striate. Leaves alternate, present only on new growth; stipules very small, caducous; petiole ± absent; leaf blade oblong-linear, 7-15 × 0.7-1.5 mm, base attenuate, margin entire, apex obtuse. Cyathia clustered at apex of branches, pedunculate, unisexual; involucral leaves minute, membranous, caducous; involucre turbinate, ca. 2 × 1.5 mm, shortly pubescent inside; glands 5, peltate-ovate or subrounded. Male flowers many, exserted from involucre. Female flower: ovary glabrous, exserted from involucre; styles connate below middle; stigma 2-lobed. Capsule 3-lobed, ca. 8 × 8 mm, smooth, sparsely pilose or glabrous. Seeds ovoid-globose, ca. 4 × 4 mm, smooth; caruncle small. Fl. and fr. Jul-Oct.
(생육지와 분포)
Cultivated and escaped. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang; also widely cultivated in greenhouses of C and N China [native to Africa (Angola); widely cultivated in tropical Asia].
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242321544
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