栏目

反苞蒲公英Taraxacum grypodon Dahlst.

反苞蒲公英Taraxacum grypodon Dahlst.

科名:菊科 Compositae

属名:蒲公英属 Taraxacum

《中国植物志》第80(2)卷040页
  31.反苞蒲公英(西藏植物志)图版9:9-12
  Taraxacum grypodon Dahlst. in Act. Hort. Gothob. 2: 157. f. 6, t. 2, f. 5-8. 1926; S. Y. Hu in Quart. Journ. Taiwan Mus. 22: 654. 1969; 西藏植物志 4: 932.1985.
  多年生草本。叶披针形或线状披针形,长10-20厘米,宽2-4厘米,边缘的叶全缘或浅裂,先端钝;中层和内层叶每侧有3-4片裂片;顶端裂片宽,戟形,全缘或近全缘,先端钝;侧裂片三角形,倒向,裂片间全缘或有稀疏的小齿。花葶比叶长2倍多,高达30厘米,上端被蛛丝状长柔毛;头状花序直径55-60毫米;总苞钟形,长约20毫米;外层总苞片多,卵状披针形,多少展开至向外反卷,先端钝,有明显的窄膜质边缘;内层总苞片先端多少紫色;舌状花亮黄色,边缘花舌片背面有宽紫红色条纹,花柱和柱头暗绿色,干后黑色。瘦果麦秆黄色,长3毫米,上部有小刺,顶端略突然缢缩为长0.5-1毫米的圆锥至圆柱形喙基,喙纤细,长9-12毫米;冠毛白色,长6毫米。
  产四川西北部及西藏东部。生于中、高海拔地区松林下或山坡草地。模式标本采自四川松潘。
形态特征:多年生草本。叶披针形或线状披针形,长10—20厘米,宽2—4厘米,边缘的叶全缘或浅裂,先端钝;中层和内层叶每侧有3—4片裂片;顶端裂片宽,戟形,全缘或近全缘,先端钝;侧裂片三角形,倒向,裂片间全缘或有稀疏的小齿。花葶比叶长2倍多,高达30厘米,上端被蛛丝状长柔毛;头状花序直径55—60毫米;总苞钟形,长约20毫米;外层总苞片多,卵状披针形,多少展开至向外反卷,先端钝,有明显的窄膜质边缘;内层总苞片先端多少紫色;舌状花亮黄色,边缘花舌片背面有宽紫红色条纹,花柱和柱头暗绿色,干后黑色。瘦果麦秆黄色,长3毫米,上部有小刺,顶端略突然缢缩为长0.5—1毫米的圆锥至圆柱形喙基,喙纤细,长9—12毫米;冠毛白色,长6毫米。
产地分布:产四川西北部及西藏东部。生于中、高海拔地区松林下或山坡草地。模式标本采自四川松潘。
参考文献:Taraxacum grypodon Dahlst.In Act.Hort.Gothob.2:157.F.6,T.2,f5——8.1926;S.Y.Hu in Quart.Journ.Taiwan Mus.22:654.1969;西藏植物志4:932. 1985.

《Flora of China》 Vol. 20-21 (2011)
25. Taraxacum grypodon Dahlstedt, Acta Horti Gothob. 2: 157. 1926.
反苞蒲公英 fan bao pu gong ying
Herbs 20-30 cm tall, robust. Petiole ± pale green to purplish, narrow; leaf blade pale green, oblanceolate to narrowly oblanceolate, 12-15 × 2-2.5 cm, sparsely arachnoid, undivided or lobed; lateral lobes broadly triangular, remote, recurved-hamate; interlobes long, margin subentire or with 1-3 triangular teeth; terminal lobe elongated, apex subobtuse. Scapes brownish green, overtopping leaves, apically yellowish arachnoid. Capitulum 5-5.5 cm wide. Involucre 1.6-1.8 cm wide, base broadly rounded Outer phyllaries 20-24, ovate-lanceolate, outermost ones 13-16 × 4.5-5.5 mm and 3/5-4/5 as long as inner ones, unequal, ± patent to erect-patent, middle part greenish at base and apically blackish green, distinctly veined, border white, membranous, and ca. 0.2 mm wide but apically pink and ca. 0.5 mm wide, margin sparsely ciliate, apex blackish green, blunt, and corniculate below tip; inner phyllaries to 2 cm. Ligules yellow; outer ligules outside striped grayish; inner ligules with blackish apical teeth; floret tube sparsely puberulent. Stigmas blackish green. Anthers polliniferous; pollen grains slightly irregular in size. Achene brown, 4.5-4.8 × ca. 1.2 mm; body densely spinulose and squamulose above, ± smooth to tuberculate below, ± abruptly narrowing into a subcylindric ca. 1 mm cone; beak 8-9 mm. Pappus yellowish white, ca. 9 mm. Fl. summer. Probably sexual.● Subalpine meadows; 3100-3300 m. Qinghai, N Sichuan.
Taraxacum grypodon was also reported from E Xizang (FRPS 80(2): 42. 1999; Higher Pl. China 11: 777. 2005), but a revision of the material is required.As there are no ripe achenes in the authentic material of Taraxacum grypodon, their description is compiled on the basis of Anonymous 8486 (PE, no. det. 22956), from Qinghai.

TOP