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东南景天Sedum alfredii Hance

花匠小妙招
2024-12-05 16:42

别名：石板菜;崖松;白花狗牙半;变叶景天;东南佛甲草;合香草;石上老鼠耳;石上马齿苋;鸭子虫菜;小鹅儿肠;台湾景天;石上瓜子菜;

科名：景天科 Crassulaceae

属名：景天属 Sedum

《中国植物志》第34(1)卷148页
  100．东南景天（湖北植物志）石板菜（改订植物名汇），变叶景天（拉汉种子植物名称）图版32：25-32
  Sedum alfredii Hance in Journ. Bot. 8: 7. 1870; Frod. in Acta Hort. Gothob. 6. Append.: 94, p. p. excl. syn. pl. 61: 2. f. 741-748. 1931; Liu T. S. et N. J. Chung in Fl. Taiwan 3: 16. pl. 463. 1977; 湖北植物志2: 67. 图774. 1979. ——Sedum formosanum N. E. Br. in Gard. Chron. II. 25: 138 1885; Praeg. in Journ. Roy. Hort. Soc. London 46: 295. f. 175. 1921; Frod. in Acta Hort. Gothob. 6. Append. : 97. pl. 62. f. 778-784. 1931; Ohwi, Fl. Jap. (Engl. ed.) 497. 1965; 中国高等植物图鉴2: 92. 图1913. 1972.
  多年生草本。茎斜上，单生或上部有分枝，高10-20厘米。叶互生，下部叶常脱落，上部叶常聚生，线状楔形、匙形至匙状倒卵形，长1.2-3厘米，宽2-6毫米，先端钝，有时有微缺，基部狭楔形，有距，全缘。聚伞花序宽5-8厘米，有多花；苞片似叶而小；花无梗，直径1厘米；萼片5，线状匙形，长3-5毫米，宽1-1.5毫米，基部有距；花瓣5，黄色，披针形至披针状长圆形，长4-6毫米，宽1.6-1.8毫米，有短尖，基部稍合生；雄蕊10，对瓣的长2.5毫米，在基部上1-1.5毫米处着生，对萼的长4毫米；鳞片5，匙状正方形，长1.2毫米，先端钝截形；心皮5，卵状披针形，直立，基部合生，全长4毫米，花柱长1毫米在内。蓇葖斜叉开；种子多数，长0.6毫米，褐色。花期4-5月，果期6-8月。

产广西、广东、台湾、福建、贵州、四川、湖北、湖南、江西、安徽、浙江至江苏宜兴。生于海拔1400米以下（在四川可到2000-3000米）山坡林下阴湿石上。朝鲜、日本也有。模式标本采自广东。

《Flora of China》 Vol. 8 (2001)
Sedum alfredii Hance
东南景天 dong nan jing tian
Herbs perennial. Stems simple or apically branched, ascending, 10-20 cm. Leaves alternate proximally on stem, usually deciduous, crowded distally on stem; leaf blade linear-cuneate, spatulate, or obovate, 1.2-3 × 0.2-0.6 cm, base narrowly cuneate and spurred, apex obtuse and sometimes emarginate. Cyme corymbiform, 5-8 cm in diam., many flowered; bracts leaflike, small. Flowers sessile, unequally 5-merous, ca. 1 mm in diam. Sepals linear-spatulate, 3-5 × 1-1.5 mm, base spurred. Petals yellow, lanceolate to lanceolate-oblong, 4-6 × 1.6-1.8 mm, base connate, apex mucronate. Stamens 10; antesepalous ones ca. 4 mm; antepetalous ones ca. 2.5 mm, inserted 1-1.5 mm from petal base. Nectar scales spatulate-quadrangular, ca. 1.2 mm, apex obtusely truncate. Carpels erect, ovoid-lanceolate, ca. 4 mm, base connate. Styles ca. 1 mm. Follicles obliquely divergent. Seeds numerous, brown, ca. 0.6 mm. Fl. Apr-May, fr. Jun-Aug.
Shady moist rocks on forested slopes; 2000-3000 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Taiwan, Zhejiang [Japan, Korea].

Sedum shitaiense Y. Zheng & D. C. Zhang (in Y. Zheng et al., Bull. Bot. Res., Harbin 20: 246. 2000), described from Anhui, is known to the present authors only from the protologue. It was compared to S. emarginatum and S. kiangnanense, from which it was separated by its mostly alternate leaves, although these and other features suggest a closer relationship to S. alfredii, from which it may be separable by its larger (ca. 1 × 0.5 mm), tuberculate seeds.