栏目

异羽千里光Senecio diversipinnus Ling

异羽千里光Senecio diversipinnus Ling

别名:羽裂千里光;高原千里光;长梗千里光;

科名:菊科 Compositae

属名:千里光属 Senecio

《中国植物志》第77(1)卷274页
  39.异羽千里光 图版60: 7-12
  Senecio diversipinnus Ling in Contr. Inst. Bot. Nat. Acad. Peiping. 5: 21. fig. 4. 1937; C. Jeffrey et Y. L. Chen in Kew Bull. 39(2): 398. 1984;黄土高原植物志5: 360.图版64: 8-11. 1989.
  多年生根状茎草本,根状茎粗,径达2.5厘米,具多数被密绒毛纤维状根。茎单生,直立,高50-100厘米,被短柔毛,不分枝或上部具花序枝。基生叶和下部茎叶在花期生存或有时枯萎,具柄,全形倒披针状匙形,长达30厘米,宽10厘米,大头羽状分裂,顶生裂片大,三角状戟形,长8-10厘米,宽6-8厘米,渐尖,基部截形或近楔形,边缘有不规则齿,侧生裂片较小,3-6对,长圆形至披针形,尖或渐尖,纸质,上面有贴生疏柔毛至近无毛,下面被疏蛛丝状毛或柔毛;叶柄基部扩大但无耳;中部茎叶与下部茎叶同形,具短柄或无柄,基部多少有耳;叶耳宽,圆形,深裂或具撕裂的齿,宽达2厘米;上部茎叶渐小,无柄,具狭侧生裂片和顶裂片,具疏齿或近全缘。头状花序有舌状花或无舌状花,多数,排列成顶生复伞房花序;花序分枝和花序梗被黄褐色短柔毛;花序梗细,长5-15毫米,有基生线形苞片;小苞片1-3,线状钻形,长2-3毫米,被短微毛。总苞狭钟状,长5-6毫米,宽2-3毫米,具外层苞片;苞片3-5,线形;总苞片8-9,线状披针形,宽1毫米,尖,上端紫色,有细缘毛,草质,边缘狭干膜质,背面有疏短柔毛至无毛。舌状5或无舌状花,管部长3.5毫米,无毛;舌片黄色,长圆形,长6-8毫米;宽1-1.5毫米,顶端有3细齿;管状花12-15; 花冠黄色,长7-7.5毫米,管部长3.5毫米,檐部漏斗状;裂片卵状披针形,长1毫米,尖,上端有乳头状毛。花药长2.2毫米,基部有明显稍尖的耳,附片卵状披针形;花药颈部短,向基部明显膨大。花栓分枝长1.2毫米,顶端截形,有乳头状毛。瘦果圆柱形,长3.5-4.5毫米,有柔毛。冠毛白色,长6-7毫米。
  产青海(西宁、大通、玉树)、甘肃(莲塘、拉不楞、洮河)。生于开旷草坡和岩石山坡,海拔1900-3500米。模式采自甘肃莲塘县。
形态特征:多年生根状茎草本,根状茎粗,径达2.5厘米,具多数被密绒毛纤维状根。茎单生,直立,高50—100厘米,被短柔毛,不分枝或上部具花序枝。基生叶和下部茎叶在花期生存或有时枯萎,具柄,全形倒披针状匙形,长达30厘米,宽10厘米,大头羽状分裂,顶生裂片大,三角状戟形,长8—10厘米,宽6—8厘米,渐尖,基部截形或近楔形。边缘有不规则齿,侧生裂片较小,3—6对,长圆形至披针形,尖或渐尖,纸质,下面被疏蛛丝状毛或柔毛;叶柄基部扩大但无耳;中部茎与下部茎叶同形,具短柄或无柄,基部多少有耳;叶耳宽,圆形,深裂或具撕裂的齿,宽达2厘米;上部茎叶渐小,无柄,具狭侧生裂片和顶裂片,具疏齿或近全缘。花序梗细,长5—15毫米,有基生线形苞片;小苞片1—3,线状钻形,长2—3毫米,被短微毛。总苞狭钟状,长5—6毫米,宽2—3毫米,具外层苞片;苞片3—5,线形;总苞片8—9,线状披针形,宽1毫米,尖,上端紫色,有细缘毛,草质,边缘狭干膜质,背面有疏短柔毛至无毛。舌状5或无舌状花,管部长3.5毫米,无毛;舌片黄色,长圆形,长6—8毫米;宽1—1.5毫米,顶端有3细齿;管状花12—15;花冠黄色,长7—7.5毫米,管部长3,5毫米,檐部漏斗状;裂片卵状披针形,长1毫米,尖,上端有乳头状毛。花药长2.2毫米,基部有明显稍尖的耳,附片卵状披针形;花药颈部短,向基部明显膨大。花栓分枝长1.2毫米,顶端截形,有乳头状毛。瘦果圆柱形,长3.5—4.5毫米,有柔毛。冠毛白色,长6—7毫米。
产地分布:产青海(西宁、大通、玉树)、甘肃(莲塘、拉不楞、洮河)。生于开旷草坡和岩石山坡,海拔1900—3500米。模式采自甘肃莲塘县。
参考文献:Senecio diversipinnus Ling in Contr.Inst.Bot.Nat.Acad.Peiping.5:21.Fig. 4. 1937;C.Jeffreyct Y.L Chen inKewBull.39(2):398. 1984;黄土高原植物 志 5:a60.图版64:8-11.1989.

《Flora of China》 Vol. 20-21 (2011)
40. Senecio diversipinnus Y. Ling, Contr. Inst. Bot. Natl. Acad. Peiping. 5: 21. 1937.
异羽千里光 yi yu qian li guang
Herbs, perennial, rhizomatous. Stem solitary, erect, 50-100 cm tall, shortly pubescent, simple or branching into synflorescences in upper part. Basal and lower stem leaves present at or sometimes withered by anthesis; petiole expanded but not auriculate at base; blade oblanceolate-spatulate, to 30 × 10 cm, papery, abaxially sparsely arachnoid or pubescent, adaxially sparsely adpressed pubescent to subglabrous, lyrate-pinnatipartite with large, triangular-hastate, 8-10 × 6-8 cm, acuminate, irregularly dentate, basally truncate or subcuneate terminal lobe and 6-12 oblong to lanceolate, acute-acuminate, irregularly dentate smaller lateral lobes. Median stem leaves similar, shortly petiolate or sessile, basally ± auriculate; auricle to 2 cm wide, rounded, incised or lacerate-dentate. Upper stem leaves gradually smaller upward, sessile, with narrower lobes and attenuate terminal lobe, laxly dentate or subentire. Capitula radiate or discoid, numerous, arranged in compound terminal corymbs; synflorescence branches and peduncles fulvous puberulent, peduncles 5-15 mm, slender, linear-bracteate at base; bracteoles 1-3, linear-subulate, 2-3 mm, puberulent. Involucres narrowly campanulate, 5-6 × 2-3 mm, calyculate; bracts of calyculus 3-5, linear; phyllaries 8 or 9, linear-lanceolate, ca. 1 mm, apically acute, purplish and puberulent to glabrous. Ray florets absent or 5; corolla tube ca. 3.5 mm, glabrous; lamina oblong, 6-8 × 1-1.5 mm, 3-denticulate. Disk florets 12-15; corolla yellow, 7-7.5 mm, with ca. 3.5 mm tube and funnelform limb; lobes ovate-triangular, ca. 1 mm, apically acute, papillose. Anthers ca. 2.2 mm, basally distinctly subacutely auriculate, appendages ovate-lanceolate; antheropodia short, basally distinctly dilated. Style branches ca. 1.2 mm. Achenes cylindric, 3.5-4.5 mm, pubescent. Pappus white, 6-7 mm. Fl. Jun-Aug, fr. Sep-Oct.● Open grassy and rocky slopes, scrub; 1900-3800 m. Gansu, Qinghai, Sichuan.

TOP