栏目

凉山紫菀Aster taliangshanensis Ling

凉山紫菀Aster taliangshanensis Ling

科名:菊科 Compositae

属名:紫菀属 Aster

《中国植物志》第74卷153页
  15. 凉山紫菀 图版44:1-4
  Aster taliangshanensis Ling in Addenda
  多年生草本,根状茎垂直或横走。茎直立,高50-80厘米,粗壮,多分枝,有棱及细沟,被卷伏或开展的长柔毛,上部有较疏的叶。下部叶在花期枯萎;中部叶长圆披针形,长6-11厘米,宽1.5-2.5厘米,基部渐狭或急狭,稀近圆形,无柄或有短柄,上部渐狭,顶端细尖,边缘有5-6对小尖头状齿或浅齿,上部叶长圆状或线状披针形,长3-5厘米,宽0.5-1厘米,边缘波状,稍有齿或近全缘;全部叶近纸质,上面被密短糙毛,下面被短贴毛,有腺点,或仅沿脉及边缘被长柔毛,中脉及5-6对侧脉在下面稍高起,网脉显明。头状花序径3-4厘米,在茎和枝端排列成疏散房状;花序梗长2-10厘米,有线形苞叶。总苞半球状,径10-12毫米;总苞片2稀3层,近等长,长5-6毫米,宽1.5-1.8毫米,外层草质,基部近革质,长圆披针形,顶端钝或稍尖,边缘紫红色,背面被短毛且常有腺,内层上端草质,边缘膜质,有缘毛。舌状花50-60个,管部长1毫米,舌片蓝紫色,长15毫米,宽1.5-2毫米。管状花长3-4毫米,黄色,裂片长1毫米;花柱附片披针形。冠毛污白色或带红褐色,长4毫米,有稍不等长的微糙毛。瘦果倒卵圆形,长约2毫米,一面有肋,全部或上部被疏毛。花期7-8月;果期8-9月。
  产于四川西部及西南部(凉山、美姑、雷波、西昌、越西)。生于低山及亚高山山坡林下,草地及路旁。海拔2500-3100米。
  此种的总苞构造及舌状花数目在本组中至为特殊,易与他种区别。茎多分枝,上部常紫红色,头状花序在枝端1-3个且全部排列成疏伞房状。
形态特征:多年生草本,根状茎垂直或横走。茎直立,高50一80厘米,粗壮,多分枝,有棱及细沟,被卷伏或开展的长柔毛,上部有较疏的叶。下部叶在花期枯萎;中部叶长圆披针形,长6—11厘米,宽1.5—2.5厘米,基部渐狭或急狭,稀近圆形,无柄或有短柄,上部渐狭,顶端细尖,边缘有5—6对小尖头状齿或浅齿,上部叶长圆状或线状披针形,长3—5厘米,宽0.5—1厘米,边缘波状,稍有齿或近全缘;全部叶近纸质,上面被密短糙毛,下面被短贴毛,有腺点,或仅沿脉及边缘被长柔毛,中脉及5—6对侧脉在下面稍高起,网脉显明。头状花序径3—4厘米,在茎和枝端排列成疏散房状;花序梗长2—10厘米,有线形苞叶。总苞半球状,径10—12毫米;总苞片2稀3层,近等长,长5—6毫米,宽1.5—1.8毫米,外层草质,基部近革质,长圆披针形,顶端钝或稍尖,边缘紫红色,背面被短毛且常有腺,内层上端草质,边缘膜质,有缘毛。舌状花50—60个,管部长1毫米,舌片蓝紫色,长15毫米,宽1.5—2毫米。管状花长3—4毫米,黄色,裂片长1毫米;花柱附片披针形。冠毛污白色或带红褐色,长4毫米,有稍不等长的微糙毛。瘦果倒卵圆形,长约2毫米,一面有肋,全部或上部被疏毛。花期7—8月;果期8—9月。
产地分布:产于四川西部及西南部(凉山、美姑、雷波、西昌、越西)。生于低山及亚高山山坡林下,草地及路旁。海拔2500—3100米。
本种提示:此种的总苞构造及舌状花数目在本组中至为特殊,易与他种区别。茎多分枝,上部常紫红色,头状花序在枝端l一3个且全部排列成疏伞房状。
参考文献:Aster taliangshanensis Ling in Addenda

《Flora of China》 Vol. 20-21 (2011)
Aster taliangshanensis  Y. Ling Fl. Reipubl. Popularis Sin. 74: 356. 1985.
凉山紫菀   liang shan zi wan
Herbs, perennial, 50-80 cm; rhizome vertical or procumbent. Stems erect or ascending, thick, multibranched, finely sulcate, strigose and strigillose. Leaves cauline, abaxially strigose, veins with sparse sessile glands and sparsely villous-strigose, midvein and 5 or 6 pairs of lateral veins prominent, conspicuously reticulate, adaxially densely strigose; lower leaves withered by anthesis; middle leaves sessile or shortly petiolate; blade ovate to broadly lanceolate, 6-11 × 1.5-2.5 cm, base gradually or abruptly attenuate, rarely subrounded, subclasping, margin serrate, teeth mucronulate, scabrous, apex acute to acuminate; upper leaves lanceolate, 3-5 × 0.5-1 cm, margin entire or serrulate. Capitula in terminal, open corymbiform synflorescences, 3-4 cm in diam.; peduncles 2-10 cm; bract linear-lanceolate when present. Involucres hemispheric, 10-12 mm in diam.; phyllaries 3-seriate, subequal, 5-6 × 1.5-1.8 mm, abaxially villous-strigillose, margin scarious (outer phyllaries narrowly so), erose-fimbriate, purplish; outer phyllaries oblong to oblanceolate, leaflike, base hardened, apex acute to acuminate, sometimes recurved, glandular; inner phyllaries membranous, apex herbaceous. Ray florets 50-60, blue-purple, tube 0.7-1 mm, glabrous, lamina 8-15 × 1.5-2 mm; disk florets yellow, 3-4 mm, glabrous, tube ca. 1.1 mm, limb campanulate, lobes 1-1.1 mm. Achenes brown, obovoid, compressed, 2-2.5 mm, sparsely strigillose to glabrate, pale 2-4-ribbed. Pappus 3-seriate, dirty white or reddish brown, of barbellate bristles; outermost bristles slender, 0.4-0.9 mm; inner bristles ca. 3.8 mm, acute; innermost bristles 4-4.1 mm, slightly clavate. Fl. Jun-Aug, fr. Aug-Sep.
● Low mountains and alpine forests, grasslands, dry stony shrubby slopes, roadsides; 2500-3100 m. SW and W Sichuan.
The involucre and the number of ray florets of Aster taliangshanensis are distinctive.The involucre and the number of ray florets of Aster taliangshanensis are distinctive.

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