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二色香青Anaphalis bicolor (Franch.) Diels

二色香青Anaphalis bicolor (Franch.) Diels

别名:白头蒿;二轮蒿;香青;三轮蒿;

科名:菊科 Compositae

属名:香青属 Anaphalis

《中国植物志》第75卷164页
  13. 二色香青 图版23: 14-28
  Anaphalis bicolor (Franch.) Diels in Not. Bot. Gard. Edinb. 7: 337. 1912.——Gnaphalium bicolor Franch. in Journ. d. Bot. 10: 411. 1896.
  根状茎细或粗壮,稍木质;根出条短,被褐色鳞片,有顶生的被白色厚茸毛莲座状叶丛,与花茎密集丛生。茎从膝曲的基部直立,高20-45厘米,被白色或灰白色或黄白色棉毛和头状具柄腺毛,下部常脱毛,全部有密生的叶。下部叶在花期枯萎,中部和上部叶多少直立或开展,线形或长圆状线形,长1.5-4或达7厘米,宽0.2-0.8厘米,顶端钝或渐尖,有细长小尖头,边缘稍反卷或平,有时波状,基部沿茎下延成狭长的翅,质稍厚,被灰白色,白色或黄白色厚棉毛及隐藏于毛茸下的头状具柄腺毛;中脉在下面高起,侧脉不明显。头状花序多数(稀少数至5个)在茎和枝端密集成复伞房花序;花序梗短;总花序梗长达3厘米,有钻状线形的苞叶。总苞钟状,长6-7毫米,径6-8毫米;总苞片5-6层,外层被棉毛,长约2毫米,内层倒披针状椭圆形,长约5毫米,在雄株宽达2毫米,在雌株宽达1.5毫米,顶端钝或圆形,稍黄色或污白色,基部浅褐色,最内层线状长圆形,有长达全长三分之二的爪部。花托浅蜂窝状。雌株头状花序外围有多层雄花,中央有1-2个雄花;雄株头状花序全部有雄花。花冠长约4毫米。冠毛与花冠约等长,在雄花上部较粗扁,有锯齿。瘦果长圆形,长1毫米,稀较长,近无毛。花期7-10月,果期9-11月。
  产四川西部及西南部、云南西部及北部、青海、甘肃西南部。生于高山至低山草地,荒地,灌丛及针叶林下。
  此种的头状花序略似纤枝香青 A. gracilis Hand. -Mazz. 但无木质粗厚的根状茎,茎也不很木质化。
形态特征:根状茎细或粗壮,稍木质;根出条短,被褐色鳞片,有顶生的被白色厚茸毛莲座状叶丛,与花茎密集丛生。茎从膝曲的基部直立,高20一45厘米,被白色或灰白色或黄白色棉毛和头状具柄腺毛,下部常脱毛,全部有密生的叶。下部叶在花期枯萎,中部和上部叶多少直立或开展,线形或长圆状线形,长1.5—4或达7厘米,宽0.2—0.8厘米,顶端钝或渐尖,有细长小尖头,边缘稍反卷或平,有时波状,基部沿茎下延成狭长的翅,质稍厚,被灰白色,白色或黄白色厚棉毛及隐藏于毛茸下的头状具柄腺毛;中脉在下面高起,侧脉不明显。头状花序多数(稀少数至5个)在茎和枝端密集成复伞房花序;花序梗短;总花序梗长达3厘米,有钻状线形的苞叶。总苞钟状,长6—7毫米,径6—8毫米;总苞片5-6层,外层被棉毛,长约2毫米,内层倒披针状椭圆形,长约5毫米,在雄株宽达2毫米,在雌株宽达1.5毫米,顶端钝或圆形,稍黄色或污白色,基部浅褐色,最内层线状长圆形,有长达全长三分之二的爪部。花托浅蜂窝状。雌株头状花序外围有多层雄花,中央有1—2个雄花;雄株头状花序全部有雄花。花冠长约4毫米。冠毛与花冠约等长,在雄花上部较粗扁,有锯齿。瘦果长圆形,长1毫米,稀较长,近无毛。花期7—10月,果期9—11月。
产地分布:产四川西部及西南部、云南西部及北部,青海、甘肃西南部。生于高山至低山草地,荒地,灌丛及针叶林下。
本种提示:此种的头状花序略似纤枝香青A.GracilisHand.-Mazz.但无木质粗厚的根状茎,茎也不很木质化。
参考文献:Anaphalis bicolor(Franch.)Diels in Not.Bot.Gard.Edinb.7:337. 1912~ Gnaphalium bicoloz Franch.In Journ.D. Bot.10;411.1896.

《Flora of China》 Vol. 20-21 (2011)
Anaphalis bicolor  (Franchet) Diels Notes Roy. Bot. Gard. Edinburgh. 7: 337. 1912.
二色香青   er se xiang qing
Rhizome slender or thickish, somewhat woody; sobols short, with brown scales, terminal and white tomentose rosette leaves, caespitose with flowering stems. Stems erect from geniculate base, 20-45 cm, lower parts usually glabrous, upper parts white or ash-gray or whitish yellow cottony tomentose and capitate-stalked glandular hairy, rather densely leafy. Lower leaves often caducous and lost by anthesis, middle and upper leaves somewhat erect or spreading, linear or oblong-linear, 1.5-4(-7) × 0.2-0.8 cm, densely whitish yellow cottony tomentose and capitate-stalked glandular hairy, base decurrent on stems and forming a narrow wing, somewhat thickish, margin somewhat recurved or flat, sometimes undulate, apex obtuse or acuminate, with long subula; midvein exserted abaxially, lateral veins not conspicuous. Capitula numerous (rarely few to 5), compound corymbiform, dense, terminal on stems and branches; peduncle short; common peduncle of synflorescence ca. 3 cm, with subulate-linear bract. Involucre campanulate, 6-8 × 6-8 mm; phyllaries 5- or 6-seriate; outer phyllaries tomentose, ca. 2 mm; middle ones somewhat yellow or dirty white, light brownish at base, oblanceolate-elliptic, ca. 5 mm, ca. 2 mm wide in male florets, ca. 1.5 mm wide in female florets, apex obtuse or rounded; innermost ones linear-oblong, with a claw ca. 2/3 of full length. Receptacle shallowly alveolate. Outer rows of predominantly female capitula female, 1 or 2 male florets present in center; predominantly male capitula with male florets only. Corolla ca. 4 mm. Pappus almost equaling corolla, relatively thick and flat in male florets, dentate. Achene oblong, ca. 1 mm, rarely longer, almost glabrous. Fl. Jul-Oct, fr. Sep-Nov.
● Alpine to low hill grasslands, deserts, under shrubs, conifer forests; 2000-3800 m. E and W Gansu, Qinghai, SW and W Sichuan, E Xizang, N and W Yunnan.

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