照山白Rhododendron micranthum
中文名（Chinese Name）：照山白
学名（Scientific Name）：Rhododendron micranthum Turcz.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Rhododendron pritzelianum Diels Rhododendron rosthornii Diels
科属（Family & Genus）：杜鹃花科（Ericaceae）杜鹃属
形态特征（Description）：常绿灌木，高可达2.5米，茎灰棕褐色；枝条细瘦。幼枝被鳞片及细柔毛。叶近革质，倒披针形、长圆状椭圆形至披针形，长（1.5-）3-4（-6）厘米，宽0.4-1.2（-2.5）厘米，顶端钝，急尖或圆，具小突尖，基部狭楔形，上面深绿色，有光泽，常被疏鳞片，下面黄绿色，被淡或深棕色有宽边的鳞片，鳞片相互重叠、邻接或相距为其直径的角状披针形或披针状线形，外面被鳞片，被缘毛；花冠钟状，长4-8（-10）毫米，外面被鳞片，内面无毛，花裂片5，较花管稍长；雄蕊10，花丝无毛；子房长1-3毫米，5-6室，密被鳞片，花柱与雄蕊等长或较短，无鳞片。蒴果长圆形，长（4-）5-6（-8）毫米，被疏鳞片。花期5-6月，果期8-11月。
分布（Distribution）：广布我国东北、华北及西北地区及山东、河南、湖北、湖南、四川等省。生于海拔1000-3000米山坡灌丛、山谷、峭壁及石岩上。朝鲜也有。
用途（Use）：本种有剧毒，幼叶更毒，牲畜误食，易中毒死亡。
引自中国植物志英文版FOC Vol. 14 Page 304
Rhododendron micranthum Turczaninow, Bull. Soc. Imp. Naturalistes Moscou. 10(7): 155. 1837.
照山白 zhao shan bai | Apiaceae | Rhododendron
Rhododendron pritzelianum Diels; R. rosthornii Diels.
Shrubs, evergreen, up to 2.5 m tall; branchlets slender, scaly, puberulous. Petiole 3–8 mm, scaly; leaf blade almost leathery, oblanceolate, oblong-elliptic, to lanceolate, (1.5–)3–4(–6) × (0.4–)9–12(–2.5) cm; base narrowly cuneate; apex obtuse or acute, mucronate; abaxial surface scales contiguous or ca. 0.5 × their own diameter apart, brownish, broadly rimmed; adaxial surface dark green, shiny, usually sparsely scaly. Inflorescence racemose, 10–28-flowered; rachis 10–26 mm. Pedicel 0.8–2 cm, densely scaly; calyx lobes 1–3 mm, linear or triangular-lanceolate, scaly, margin ciliate; corolla campanulate, white, (0.4–) 0.5–0.8(–1) cm, tube slightly shorter than lobes; outer surface scaly; inner surface glabrous; stamens 10, nearly as long as corolla; filaments glabrous; ovary densely scaly; style nearly as long as stamens, glabrous. Capsule cylindric, (4–)5–6(–8) mm, scaly. Fl. May–Jun, fr. Aug–Nov.
Thickets, scrub, slopes, dry gorges, cliffs, rocks; 1000–3000 m. N China, also Henan, Hubei, Hunan, Sichuan [Korea].
（责任编辑：徐晔春）
学名（Scientific Name）：Rhododendron micranthum Turcz.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Rhododendron pritzelianum Diels Rhododendron rosthornii Diels
科属（Family & Genus）：杜鹃花科（Ericaceae）杜鹃属
形态特征（Description）：常绿灌木，高可达2.5米，茎灰棕褐色；枝条细瘦。幼枝被鳞片及细柔毛。叶近革质，倒披针形、长圆状椭圆形至披针形，长（1.5-）3-4（-6）厘米，宽0.4-1.2（-2.5）厘米，顶端钝，急尖或圆，具小突尖，基部狭楔形，上面深绿色，有光泽，常被疏鳞片，下面黄绿色，被淡或深棕色有宽边的鳞片，鳞片相互重叠、邻接或相距为其直径的角状披针形或披针状线形，外面被鳞片，被缘毛；花冠钟状，长4-8（-10）毫米，外面被鳞片，内面无毛，花裂片5，较花管稍长；雄蕊10，花丝无毛；子房长1-3毫米，5-6室，密被鳞片，花柱与雄蕊等长或较短，无鳞片。蒴果长圆形，长（4-）5-6（-8）毫米，被疏鳞片。花期5-6月，果期8-11月。
分布（Distribution）：广布我国东北、华北及西北地区及山东、河南、湖北、湖南、四川等省。生于海拔1000-3000米山坡灌丛、山谷、峭壁及石岩上。朝鲜也有。
用途（Use）：本种有剧毒，幼叶更毒，牲畜误食，易中毒死亡。
引自中国植物志英文版FOC Vol. 14 Page 304
Rhododendron micranthum Turczaninow, Bull. Soc. Imp. Naturalistes Moscou. 10(7): 155. 1837.
照山白 zhao shan bai | Apiaceae | Rhododendron
Rhododendron pritzelianum Diels; R. rosthornii Diels.
Shrubs, evergreen, up to 2.5 m tall; branchlets slender, scaly, puberulous. Petiole 3–8 mm, scaly; leaf blade almost leathery, oblanceolate, oblong-elliptic, to lanceolate, (1.5–)3–4(–6) × (0.4–)9–12(–2.5) cm; base narrowly cuneate; apex obtuse or acute, mucronate; abaxial surface scales contiguous or ca. 0.5 × their own diameter apart, brownish, broadly rimmed; adaxial surface dark green, shiny, usually sparsely scaly. Inflorescence racemose, 10–28-flowered; rachis 10–26 mm. Pedicel 0.8–2 cm, densely scaly; calyx lobes 1–3 mm, linear or triangular-lanceolate, scaly, margin ciliate; corolla campanulate, white, (0.4–) 0.5–0.8(–1) cm, tube slightly shorter than lobes; outer surface scaly; inner surface glabrous; stamens 10, nearly as long as corolla; filaments glabrous; ovary densely scaly; style nearly as long as stamens, glabrous. Capsule cylindric, (4–)5–6(–8) mm, scaly. Fl. May–Jun, fr. Aug–Nov.
Thickets, scrub, slopes, dry gorges, cliffs, rocks; 1000–3000 m. N China, also Henan, Hubei, Hunan, Sichuan [Korea].
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