紫茎Stewartia sinensis
中文名（Chinese Name）：紫茎
学名（Scientific Name）：Stewartia sinensis Rehd. et E. H. Wilson
英文名（English Common Name）：
别名（Chinese Common Name）：马骝光
异名（Synonym）：Stewartia gemmata Chien et Cheng Stewartia nanlingensis Yan
科属（Family & Genus）：山茶科（Theaceae）紫茎属
形态特征（Description）：小乔木，树皮灰黄色，嫩枝无毛或有疏毛，冬芽苞约7片。叶纸质，椭圆形或卵状椭圆形，长6-10厘米，宽2-4厘米，先端渐尖，基部楔形，边缘有粗齿，侧脉7-10对，下面叶腋常有簇生毛丛，叶柄长1厘米。花单生，直径4一5厘米，花柄长4-8毫米；苞片长卵形，长2-2.5厘米，宽1-1.2厘米；萼片5，基部连生，长卵形，长1-2厘米，先端尖，基部有毛；花瓣阔卵形，长2.5-3厘米，基部连生，外面有绢毛；雄蕊有短的花丝管，被毛；子房有毛。蒴果卵圆形，先端尖，宽1.5-2厘米。种子长1厘米，有窄翅。花期6月。
分布（Distribution）：产四川、安徽、江西、浙江、湖北。
引自中国植物志英文版：FOC Vol. 12 Page 424, 426, 428
Stewartia sinensis Rehder & E. H. Wilson in Sargent, Pl. Wilson. 2: 395. 1915.
紫茎 zi jing| Theaceae | Stewartia
Shrubs or trees, 3-11 m tall, deciduous. Current year branchlets purplish red, glabrous or villous; winter buds with 3-11 scales. Petiole purplish red, ca. 1 cm, glabrous or villous, narrowly winged; leaf blade elliptic to obovate-elliptic, 5.5-10.5 × 2.5-4.5 cm, papery, abaxially yellowish green, appressed pubescent, and densely villous along midvein, adaxially green and glabrous, secondary veins 7-11 on each side of midvein and raised on both surfaces, base broadly cuneate to rounded, margin sparsely serrate, apex abruptly acute to acuminate. Flowers solitary. Pedicel 0.5-3 cm, pubescent or glabrescent, thickened toward apex; bracteoles persistent, ovate, long ovate, ovate-lanceolate, broadly ovate, or subcordate, 2-2.5 × 1-1.3 cm, leaflike, apex abruptly acute, acuminate, or long acuminate. Sepals ovate, long ovate, ovate-lanceolate, broadly ovate, or subcordate, 1-2 × ca. 1 cm, leaflike, outside glabrous or basally sparsely pubescent, apex abruptly acute. Petals white, broadly obovate, 2.5-3 × 1.5-2 cm, outside gray sericeous, apex rounded. Stamens 1.5-2 cm; filaments basally connate, distinct parts sparsely villous. Ovary conical, tomentose; style ca. 1 cm, glabrous. Capsule conical, 1.5-2 × 1-1.5 cm, tomentose, apex rostrate; columella abortive. Seeds obovate in outline, planoconvex, 6-9 × 4-5 mm, margin narrowly winged. Fl. May-Jul, fr. Sep-Nov.
● Forests, dense thickets or scrub on mountains; 500-2200 m. Anhui, Fujian, N Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangxi, S Shaanxi, E Sichuan, NE Yunnan, Zhejiang.
（责任编辑：徐晔春）
学名（Scientific Name）：Stewartia sinensis Rehd. et E. H. Wilson
英文名（English Common Name）：
别名（Chinese Common Name）：马骝光
异名（Synonym）：Stewartia gemmata Chien et Cheng Stewartia nanlingensis Yan
科属（Family & Genus）：山茶科（Theaceae）紫茎属
形态特征（Description）：小乔木，树皮灰黄色，嫩枝无毛或有疏毛，冬芽苞约7片。叶纸质，椭圆形或卵状椭圆形，长6-10厘米，宽2-4厘米，先端渐尖，基部楔形，边缘有粗齿，侧脉7-10对，下面叶腋常有簇生毛丛，叶柄长1厘米。花单生，直径4一5厘米，花柄长4-8毫米；苞片长卵形，长2-2.5厘米，宽1-1.2厘米；萼片5，基部连生，长卵形，长1-2厘米，先端尖，基部有毛；花瓣阔卵形，长2.5-3厘米，基部连生，外面有绢毛；雄蕊有短的花丝管，被毛；子房有毛。蒴果卵圆形，先端尖，宽1.5-2厘米。种子长1厘米，有窄翅。花期6月。
分布（Distribution）：产四川、安徽、江西、浙江、湖北。
引自中国植物志英文版：FOC Vol. 12 Page 424, 426, 428
Stewartia sinensis Rehder & E. H. Wilson in Sargent, Pl. Wilson. 2: 395. 1915.
紫茎 zi jing| Theaceae | Stewartia
Shrubs or trees, 3-11 m tall, deciduous. Current year branchlets purplish red, glabrous or villous; winter buds with 3-11 scales. Petiole purplish red, ca. 1 cm, glabrous or villous, narrowly winged; leaf blade elliptic to obovate-elliptic, 5.5-10.5 × 2.5-4.5 cm, papery, abaxially yellowish green, appressed pubescent, and densely villous along midvein, adaxially green and glabrous, secondary veins 7-11 on each side of midvein and raised on both surfaces, base broadly cuneate to rounded, margin sparsely serrate, apex abruptly acute to acuminate. Flowers solitary. Pedicel 0.5-3 cm, pubescent or glabrescent, thickened toward apex; bracteoles persistent, ovate, long ovate, ovate-lanceolate, broadly ovate, or subcordate, 2-2.5 × 1-1.3 cm, leaflike, apex abruptly acute, acuminate, or long acuminate. Sepals ovate, long ovate, ovate-lanceolate, broadly ovate, or subcordate, 1-2 × ca. 1 cm, leaflike, outside glabrous or basally sparsely pubescent, apex abruptly acute. Petals white, broadly obovate, 2.5-3 × 1.5-2 cm, outside gray sericeous, apex rounded. Stamens 1.5-2 cm; filaments basally connate, distinct parts sparsely villous. Ovary conical, tomentose; style ca. 1 cm, glabrous. Capsule conical, 1.5-2 × 1-1.5 cm, tomentose, apex rostrate; columella abortive. Seeds obovate in outline, planoconvex, 6-9 × 4-5 mm, margin narrowly winged. Fl. May-Jul, fr. Sep-Nov.
● Forests, dense thickets or scrub on mountains; 500-2200 m. Anhui, Fujian, N Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangxi, S Shaanxi, E Sichuan, NE Yunnan, Zhejiang.
（责任编辑：徐晔春）
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