栏目

须弥千里光Senecio kumaonensis Duthie ex C. Jeffrey et Y. L. Chen

须弥千里光Senecio kumaonensis Duthie ex C. Jeffrey et Y. L. Chen

科名:菊科 Compositae

属名:千里光属 Senecio

《中国植物志》第77(1)卷233页
  1.须弥千里光 图版50: 5-8
  Senecio kumaonensis Duthie ex C. Jeffrey et Y. L. Chen in Kew Bull. 39(2): 357. 1984. ——Cacalia penninervis Koyama in Mem Fac. Sc. Kyoto Univ. Ser. Biol. 2(2): 180. 1969, et in Bull. Nat. Sc. Mus. Ser. B3 (1) 33. 1977, non Senecio penninervius DC. 1838. ——Koyamacalia penninervis ( Koyama) H. Robins. et Brettel in Phytotogia 27: 273. 1973.
  多年生草本,根状茎粗壮,木质。茎单生或数个簇生,直立,高50-90厘米,基部稍木质,被疏蛛丝状毛及卷曲短柔毛,花序下不分枝。基生叶和下部茎叶在花期凋落;中部茎叶具长柄,叶片卵形或卵状长圆形,长10-13厘米,宽4.5-5.5厘米,顶端钝至尖,多少渐尖,具小尖,基部微心形,圆形或近截形,常不等,纸质,上面初时被疏蛛丝状毛及卷曲短柔毛,下面被密白色蛛丝状绒毛,羽状脉,侧脉7-9对,弧状上弯;叶柄长3-6厘米,无翅,上部叶渐小,狭披针形,基部楔形。头状花序无舌状花,下垂,多数在茎端及上部叶腋排成狭圆锥花序;花序梗长3-8厘米,被卷短柔毛。总苞圆柱形,长7-8毫米,宽2-3毫米,具外层苞片;苞片约3,线形;总苞片5(-6),狭长圆形,长6-7毫米,宽1毫米,钝,上端被短柔毛,草质,外面被疏短柔毛,具不明显3脉。小花5-7;花冠黄色,长6毫米,管部长2毫米,檐部漏斗状;裂片卵状长圆形,长1毫米,尖。花药长2.2毫米,基部具钝耳;附片卵状披针形。颈部柱状,基部略粗;花柱分枝外弯,长1毫米,顶端钝,被乳头状毛。瘦果圆柱形,长2-3毫米,无毛;冠毛污白色,长4-5毫米。花期6-8月。
  产西藏南部(吉隆)。生于阴坡,海拔3600-4500米。印度西北部、尼泊尔、锡金及不丹也有分布。模式采自尼泊尔。
  据花的结构本种应隶属于千里光属,但植物体态和瘦果解剖学特征本种十分特殊。它似与合耳菊属Synotis近缘。
形态特征:多年生草本,根状茎粗壮,木质。茎单生或数个簇生,直立,高50—90厘米,基部稍木质,被疏蛛丝状毛及卷曲短柔毛,花序下不分枝。基生叶和下部茎叶在花期凋落;中部茎叶具长柄,叶片卵形或卵状长圆形,长10—13厘米,宽4.5—5.5厘米,顶端钝至尖,多少渐尖,具小尖,基部微心形,圆形或近截形,常不等,纸质,上面初时被疏蛛丝状毛及卷曲短柔毛,下面被密白色蛛丝状绒毛,羽状脉,侧脉7---9对,弧状上弯;叶柄长3—6厘米,无翅,上部叶渐小,狭披针形,基部楔形。头状花序无舌状花,下垂,多数在茎端及上部叶腋排成狭圆锥花序;花序梗长3--8厘米,被卷短柔毛。总苞圆柱形,长7—8毫米,宽2—3毫米,具外层苞片;苞片约3,线形;总苞片5(--6),狭长圆形,长6--7毫米,宽1毫米,钝,上端被短柔毛,草质,外面被疏短柔毛,具不明显3脉。小花5—7;花冠黄色,长6毫米,管部长2毫米,檐部漏斗状;裂片卵状长圆形,长1毫米,尖。花药长2.2毫米,基部具钝耳;附片卵状披针形。颈部柱状,基部略粗;花柱分枝外弯,长1毫米,顶端钝,被乳头状毛。瘦果圆柱形,长2--3毫米,无毛;冠毛污白色,长4—5毫米。花期6—8月。
产地分布:产西藏南部(吉隆)。生于阴坡,海拔3600--4500米。印度西北部、尼泊尔、锡金及不丹也有分布。模式采自尼泊尔。
本种提示:据花的结构本种应隶属于千里光属,但植物体态和瘦果解剖学特征本种十分特殊。它似与合耳菊属Synotis近缘。
参考文献:Senecio kumaonensis Duthie ex C.Jeffrey et Y. L.Chen in Kew Bull.39(2): 357,1984.——Cacalia penninervis KoyamainMemFac.Sc.KyotoUniv.Ser.Bid. 2(2):180.1969,et inBull.Nat.Sc.Mus.Set.B 3(1)33.1977,non Senecio penninerviusDC.1838.——Koyamacaliapenninervis(Koyama)H.Robins.etBrettel Phytotogia27:273.1973.

《Flora of China》 Vol. 20-21 (2011)
1. Senecio kumaonensis Duthie ex C. Jeffrey & Y. L. Chen, Kew Bull. 39: 357. 1984.
须弥千里光 xu mi qian li guang Cacalia penninervis H. Koyama; Koyamacalia penninervis (H. Koyama) H. Robinson & Brettell.
Herbs, perennial, with thick woody rhizome. Stem solitary or few fasciculate, erect, 50-90 cm tall, rather woody at base, sparsely arachnoid and shortly crisped-pubescent, not branched below synflorescence. Radical and lower stem leaves withered and shed by anthesis; median stem leaves long petiolate; petiole 3-6 cm, not winged; blade ovate or ovate-oblong, 10-13 × 4-5.5 cm, papery, abaxially densely white arachnoid-tomentose, adaxially at first sparsely arachnoid and shortly crisped-pubescent, pinnately veined with 14-18 arcuate lateral veins, base weakly cordate, margin mucronulate-dentate, apex acute to obtuse, ± acuminate, mucronulate. Upper leaves smaller and narrower upward, lanceolate, base cuneate. Capitula discoid, pendulous, numerous, arranged in narrow terminal and upper axil-lary panicles; peduncles 3-8 cm, shortly crisped-pubescent. Involucres cylindric, 7-8 × 2-3 mm, calyculate; bracts of calyculus ca. 3, linear; phyllaries 5(or 6), narrowly oblong, 6-7 × ca. 1 mm, herbaceous, sparsely puberulent, inconspicuously 3-veined, apically obtuse and puberulent. Florets 5-7; corolla yellow, ca. 6 mm, with ca. 2 mm tube and funnelform limb; lobes ovate-oblong, ca. 1 mm, apically acute. Anthers ca. 2.2 mm, basally obtuse-auriculate, appendages ovate-lanceolate. Style branches ca. 1 mm. Achenes cylindric, 2-3 mm, glabrous. Pappus dirty white, 4-5 mm. Fl. Jun-Aug.Shaded slopes; 3600-4500 m. S Xizang (Gyirong) [Bhutan, N India, Nepal].

TOP