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须弥紫菀Aster himalaicus C. B. Clarke

须弥紫菀Aster himalaicus C. B. Clarke

别名:曲德哇;喜马拉雅山紫菀;喜马拉雅紫菀;

科名:菊科 Compositae

属名:紫菀属 Aster

《中国植物志》第74卷220页
  68. 须弥紫菀 图版54:6-9
  Aster himalaicus C. B. Clarke., Comp, Ind. 42. 1876; Hook. f., Fl. Brit. Ind. 3: 250. 1881; Onno, Biblioth, Bot. 106: 54. 1932; Griers. in Not. Roy. Bot. Gard. Edinb. 26: 122. 1964. ——Aster mekongensis Onno, l. c. 54, 1932, p. p.
  多年生草本,根状茎粗壮,被枯叶残片。茎下部弯曲,从莲座状叶丛的基部斜升,高8-25厘米,细或稍粗壮,被开展的长毛,全部或上部有具柄的腺毛。莲座状叶倒卵形、倒披针形或宽椭圆形,长2-3.5厘米或达4.5厘米,宽1-2.5厘米,下部渐狭成具宽翅的柄,全缘或有1-2对小尖头状齿,顶端圆形或急尖,有小尖头;茎基部叶在花期枯萎,下部,叶倒卵圆形、长圆形,稀近披针形,长1.5-3.5厘米(或更长,据Grierson),宽0.5-1.2厘米,基部稍狭,半抱茎,全缘或有齿,上部叶接近花序;全部叶质薄,两面或下面沿脉及边缘有开展的长毛,且有腺,中脉及离基三出脉在下面凸起。头状花序在茎端单生,径4-4.5厘米。总苞半球形,径1.5-2厘米,长1.1-1.3厘米,常超过花盘;总苞片2层,长圆披针形,长达12毫米,宽2.5-3.5毫米,尖或渐尖,草质,或带紫色,外层全部或基部和沿脉被长毛,有腺,内层上部被毛或近无毛。舌状花50-70个,管部长1.5-2毫米,舌片蓝紫色,长13-17毫米,宽1.5-2毫米。管状花紫褐色或黄色,长6-8毫米,管部长2毫米,有短毛,裂片长1.5毫米;花柱附片长0.5毫米。冠毛白色,长5.5毫米,有不等长的微糙毛,有时有少数短毛或膜片。瘦果倒卵圆形,扁,褐色,长2.5-3毫米,有2肋,被绢毛,上部有腺。花期7-8月。
  产于西藏南部及东部(波密、藏北、亚东、察瓦龙)及云南西北部(丽江、剑川、澜沧江及怒江分水岭)。生于高山草甸及针叶林下。海拔3600-4800米。也分布于尼泊尔、锡金、不丹及缅甸北部。
  此植物的花茎与莲座状叶丛簇生,且似从后者的基部侧生与怒江紫菀 (A. salwinensis Onno) 及匍生紫菀 (A. stracheyi Hook. f.) 等相似,但茎、叶及总苞片被长毛及腺,冠毛白色,不难区别。宽苞紫菀 (A. latibracteatus Franch.) 及线舌紫菀 (A. ietii Franch.) 与此种的外形稍近似,但舌状花,冠毛等的特征都与此种不同。上述的西藏波密标本有全缘且较发育的茎下部叶,但与云南、四川的植物无基本区别。
  产于尼泊尔、锡金及不丹的 A. heliopsis Griers. (1964) 以心形的基部叶,较多且较狭的总苞片和浅褐色冠毛与本种区别,该种也可能见于我国西藏南部。
形态特征:多年生草本,根状茎粗壮,被枯叶残片。茎下部弯曲,从莲座状叶丛的基部斜升,高8—25厘米,细或稍粗壮,被开展的长毛,全部或上部有具柄的腺毛。莲座状叶倒卵形,倒披针形或宽椭圆形,长2—3.5厘米或达4.5厘米,宽1—2.5厘米,下部渐狭成具宽翅的柄,全缘或有1—2对小尖头状齿,顶端圆形或急尖,有小尖头;茎基部叶在花期枯萎,下部叶倒卵圆形、长圆形,稀近披针形,长1.5—3.5厘米(或更长,据Grierson),宽0.5—1.2厘米,基部稍狭,半抱茎,全缘或有齿,上部叶接近花序;全部叶质薄,两面或下面沿脉及边缘有开展的长毛,且有腺,中脉及离基三出脉在下面凸起。头状花序在茎端单生,径4—4.5厘米。总苞半球形,径1.5—2厘米,长1.1—1.3厘米,常超过花盘;总苞片2层,长圆披针形,长达12毫米,宽2.5—3.5毫米,尖或渐尖,草质,或带紫色,外层全部或基部和沿脉被长毛,有腺,内层上部被毛或近无毛。舌状花50一70个,管部长1.5—2毫米,舌片蓝紫色,长13—17毫米,宽1.5—2毫米。管状花紫褐色或黄色,长6—8毫米,管部长2毫米,有短毛,裂片长1.5毫米;花柱附片长0.5毫米。冠毛白色,长5.5毫米,有不等长的微糙毛,有时有少数短毛或膜片。瘦果倒卵圆形,扁,褐色,长2.5—3毫米,有2肋,被绢毛,上部有腺。花期7—8月。
产地分布:产于西藏南部及东部(波密、藏北、亚东、察瓦龙)及云南西北部(丽江、剑川、澜沧江及怒江分水岭)。生于高山草甸及针叶林下。海拔3600---4800米。也分布于尼泊尔、锡金、不丹及缅甸北部。
本种提示:此植物的花茎与莲座状叶丛簇生,且似从后者的基部侧生与怒江紫菀(A.Salwin·ensisOnno)及匍生紫菀(A.StracheyiHook.F.)等相似,但茎、叶及总苞片被长毛及腺,冠毛白色,不难区别。宽苞紫菀(A.1atibracteaiusFranch.)及线舌紫菀(A.BietiiFranch.)与此种的外形稍近似,但舌状花、冠毛等的特征都与此种不同。上述的西藏波密标本有全缘且较发育的茎下部叶,但与云南、四川的植物无基本区别。产于尼泊尔、锡金及不丹的A.HeliopsisGriers.(1964)以心形的基部叶,较多且较狭的总苞片和浅褐色冠毛与本种区别,该种也可能见于我国西藏南部。
参考文献:AsterhimalaicusC。B.Clarke·,Comp,Ind.42。1876;Hook.F·,F1。Brit.Ind.3:250.1881;Onno,Biblioth,Bot.106:54。1932;Griers.InNot.Roy。Bot.Gard.Edinb,26:122。1964.~Astermekongensis0nno,1.C.54,1932,p·p·

《Flora of China》 Vol. 20-21 (2011)
Aster himalaicus  C. B. Clarke Compos. Ind. 42. 1876.
须弥紫菀   xu mi zi wan
Aster mekongensis Onno, p.p.
Herbs, perennial, 8-25 cm tall; rhizomes robust, without stolons, collar clad with marcescent leaf remains. Stems ascending, simple, proximally villosulous, distally sparsely so, minutely stipitate glandular, more densely so distally. Leaves basal and cauline, thin, sparsely villosulous, more densely so on veins, moderately to densely minutely stipitate glandular, margin villous-ciliate, veins abaxially prominent, apices with purple mucro; basal leaves withered at anthesis, marcescent, broadly winged petiolate (petiole to 2 cm); blade oblanceolate, 0.9-2.5(-4.5) × 0.5-2.5 cm, base attenuate, margin serrulate (teeth mucronate), apex rounded to acute; lower cauline leaves oblong or obovate to oblanceolate, 1.5-4 × 0.5-1.2 cm, base rounded, subclasping, margin entire or dentate to serrulate; upper leaves approaching capitulum. Capitula terminal, solitary, 4-4.5 cm in diam. Involucres hemispheric, 11-13 × 13-14 mm, often overtopping disk; phyllaries 2- or 3-seriate, subequal, apex slightly spreading, oblong-lanceolate to lanceolate, 13-14 × 2.5-3.5 mm, abaxially sparsely villosulous to glabrate, tip densely minutely stipitate glandular, membranous, margin scarious, ciliate, multiveined, apex acuminate, ?leaflike, purplish. Ray florets 40-50(-70), blue-purple, lamina 12-15(-17) × 0.5-0.7 mm; disk florets purple-brown or yellow, ca. 5 mm, tube and proximal limb hairy, limb funnelform, ca. 4 mm, lobes erect, triangular, ca. 1 mm, tips sparsely minutely stipitate glandular. Achenes brown, narrowly obovoid, compressed, 2.5-3 mm, strigillose, minutely stipitate glandular, more densely so distally, 2-ribbed. Pappus 4-seriate, whitish to straw-colored; outermost series of few tiny scales 0.3-0.5 mm; bristles barbellate throughout; outer bristles slender, 2-3 mm; inner bristles 4-4.5 mm, acute; innermost bristles ca. 5 mm, weakly clavate. Fl. Jul-Aug, fr. Sep-Oct. 2n = 10.
Alpine meadows, Pinus forests; 3600-4800 m. Sichuan, S Xizang, NW Yunnan [Bhutan, India (Sikkim), N Myanmar, Nepal].

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