栏目

线舌紫菀Aster bietii Franch.

线舌紫菀Aster bietii Franch.

别名:线合紫菀;

科名:菊科 Compositae

属名:紫菀属 Aster

《中国植物志》第74卷227页
  74. 线舌紫菀 图版57:6-8
  Aster bietii Franch. in Journ. de Bot. 10: 373. 1876; Onno, Biblioth. Bot. 106: 55, 1932; Hand. -Mazz. in Notizbl. Bot. Gart. u. Mus. Brerl. -Dahl. 13: 621. 1937; Griers. in Not. Roy. Bot. Gard. Edinb. 16: 120, 1964; S. Y. Hu in Quart. Journ. Taiwan Mus. 18: 276, 1965. ——Aster mekongensis Onno, l. c. 54. 1932. p. p.
  多年生草本,根状茎粗壮,有时具短匍枝。茎直立或斜升,高14-45厘米,丛生,基部被枯叶残片,粗壮,有细沟,下部被卷曲的细柔毛,后常脱毛,上部被具柄腺毛和开展的柔毛,基部有较密的叶。莲座状叶长圆状匙形,长7-11厘米,下部急狭成具翅的长柄,叶片宽1.2-1.8厘米,边缘有浅或小尖头状齿,顶端尖或渐尖;茎基部叶在花期枯萎,中部叶卵圆形、长圆形或长圆披针形,长3-9厘米,宽1-2.8厘米,基部稍狭或圆形,无柄,半抱茎,顶端急尖或钝,全缘或有疏齿,上部叶稍小,顶端尖;全部叶质薄,近无毛或上面有疏毛,下面沿脉有长疏毛,常有缘毛;中脉及离基三出脉多少显明。头状花序在茎端单生,径7-8厘米。总苞半球形,径1.5-2.5厘米;总苞片约2层,等长,狭披针形,长15-22毫米,宽3-5毫米,草质,背面和边缘被深色毛和短腺毛。舌状花约70个,管部长1毫米,有毛;舌片蓝色或蓝紫色,线形,长30-35毫米,宽1.5-2毫米;管状花长6-7毫米,管部长2-2.5毫米,有短毛,裂片长1.5毫米,干后紫色,有腺。冠毛1层,紫褐色,基部稍黄色,约与管状花花冠等长,有稍不等长的糙毛。瘦果狭倒卵形,下部渐狭,长4-4.5毫米,宽1.5毫米,被具柄短腺毛。花期7-8月;果期8-11月。
  产于云南西北部(贡山、德钦、维西、丽江)、西藏东部(怒江澜沧江流域)。生于高山、亚高山山坡草地、沙地及石砾地。海拔3300-4570米。
  在单层冠毛的种中,本种由于有较大的头状花序,被腺毛的瘦果及细长的舌片,易与他种区别。全形略似扁毛紫菀 (A. bulleyanus J. F. Jeffr.),但冠毛的构造不同。此种虽常被列入长毛类 (Ser. Macrochaeta Onno), 但从冠毛的构造来看,似与短毛类 (Ser. Brachychaeta Onno) 的短毛紫菀 (A. brachytrichus Franch.) 等比较接近。
形态特征:多年生草本,根状茎粗壮,有时具短匍枝。茎直立或斜升,高14——45厘米,丛生,基部被枯叶残片,粗壮,有细沟,下部被卷曲的细柔毛,后常脱毛,上部被具柄腺毛和开展的柔毛,基部有较密的叶。莲座状叶长圆状匙形,长7—11厘米,下部急狭成具翅的长柄,叶片宽1.2—1.8厘米,边缘有浅或小尖头状齿,顶端尖或渐尖;茎基部叶在花期枯萎,中部叶卵圆形、长圆形或长圆披针形,长3—9厘米,宽1—2.8厘米,基部稍狭或圆形,无柄,半抱茎,顶端急尖或钝,全缘或有疏齿,上部叶稍小,顶端尖;全部叶质薄,近无毛或上面有疏毛,下面沿脉有长疏毛,常有缘毛;中脉及离基三出脉多少显明。头状花序在茎端单生,径7—8厘米。总苞半球形,径1.5—2.5厘米;总苞片约2层,等长,狭披针形,长15—22毫米,宽3—5毫米,草质,背面和边缘被深色毛和短腺毛。舌状花约70个,管部长1毫米,有毛;舌片蓝色或蓝紫色,线形,长30—35毫米,宽1.5—2毫米;管状花长6—7毫米,管部长2—2.5毫米,有短毛,裂片长1.5毫米,干后紫色,有腺。冠毛1层,紫褐色,基部稍黄色,约与管状花花冠等长,有稍不等长的糙毛。瘦果狭倒卵形,下部渐狭,长4—4.5毫米,宽1.5毫米,被具柄短腺毛。花期7—8月;果期8一11月。
产地分布:产于云南西北部(贡山、德钦、维西、丽江)、西藏东部(怒江澜沧江流域)。生于高山、亚高山山坡草地、沙地及石砾地。海拔3300—4570米。
本种提示:在单层冠毛的种中,本种由于有较大的头:吠花序,被腺毛的瘦果及细长的舌片,易与他种区别。全形略似扁毛紫菀(A。Bu]leyanusJ.F.Jeffr.),但冠毛的构造不同。此种虽常被列入长毛类(Ser.MacrochaetaOnno),但从冠毛的构造来看,似与短毛类(Ser.BrachychaetaOnno)的短毛紫苑(A.BrachytrichusFranch.)等比较接近。
参考文献:AsterbietiiFranch.InJourn.DeBot.10;373.1876;Onno,Biblioth.Bot.106:55,1932;Hand.·Mazz.InNotizbl.Bot.Gart.U.Mus.Berl.·Dahl.13;621.19371Griers.InNot.Roy·Bot.Gard.Edinb.16;120,1964,S.Y.HuinQuart.Journ。TaiwanMus.18:276,1965.———AstermekongensisOnno,1.C.54.1932·p·p·

《Flora of China》 Vol. 20-21 (2011)
Aster bietii  Franchet J. Bot. (Morot). 10: 373. 1896.
线舌紫菀   xian she zi wan
Aster mekongensis Onno, p.p.
Herbs, perennial, 14-45 cm tall, sometimes caespitose; rhizomes robust, sometimes with short stolons. Stems erect or ascending, simple, sparsely villous (crosswalls purple), distally minutely stipitate glandular. Leaves basal and cauline; cauline leaves gradually reduced, thin, abaxially sparsely villous to pilosulose, adaxially glabrate or sparsely pilosulose, margin entire or remotely serrate to serrulate, apex mucronate; basal leaves withered at anthesis, sometimes marcescent, long winged petiolate (petiole to 10 cm); blade oblong to spatulate, 2-10 × 1-3.5 cm, base attenuate, apex acute or acuminate; lower to middle cauline leaves sessile, obovate to lanceolate, 3-9 × 1-2.8 cm, base cuneate to rounded, subclasping, apex acute to obtuse; upper cauline leaves 1.5-3 × 0.8-1.2 cm, apex acute. Capitula terminal, solitary, 7-8 cm in diam. Involucres hemispheric, 1.5-2.5 cm in diam.; phyllaries 2-seriate, equal, lanceolate to narrowly lanceolate, 15-20 mm, abaxially sparsely villous, densely minutely purple stipitate glandular, leaflike, margin long ciliate, apex long acuminate, often purplish; outer phyllaries 2-5 mm wide, proximally lanate and distally so on midvein, sometimes lanate more distally; inner phyllaries 2-3 mm wide. Ray florets 50-70, purplish blue, tube sparsely strigillose, lamina 30-40 × 1-1.5 mm, glabrous, eglandular; disk florets yellow, 7-9 mm, limb funnelform, 4-6 mm, sparsely strigillose proximally, lobes spreading, narrowly triangular, 1.8-2.3 mm, minutely stipitate glandular, tip purple. Achenes obovoid, compressed, 4-4.5 mm, glabrous or distally glabrate, moderately to densely minutely stipitate glandular, not winged, 2-ribbed. Pappus 3- or 4-seriate, reddish brown, bristles barbellate throughout; outermost bristles very few or none, slender, ca. 0.7 mm; outer bristles few, slender, 2-4 mm; inner bristles 5-5.5 mm, acute; innermost bristles ca. 6 mm, weakly clavate. Fl. Jul-Aug, fr. Aug-Nov.
● Alpine and subalpine meadows and screes, ledges of cliffs; 3300-4600 m. E Xizang, NW Yunnan.

TOP