栏目

弥勒千里光Senecio humbertii Chang

弥勒千里光Senecio humbertii Chang

别名:圭山千里光;

科名:菊科 Compositae

属名:千里光属 Senecio

《中国植物志》第77(1)卷247页
  15.弥勒千里光 图版50:1-4
  Seneci hunberti Chang in Bull. Fan Mem. Inst. Biol. Bot. 7: 152. 1936; S. Y. Hu in Quart. Journ. Taiwan Mus. 21: 48. 1968; C. Jeffrey et Y. L. Chen in Kew Bull. 39 (2): 374. 1984. ——Senecio compactiflorus Chang in sched.
  多年生具匍匐枝草本,根状茎未详。茎单生,直立,高60-70厘米,花序下部不分枝,幼时被疏短柔毛,迅速脱落。基部和匍枝上叶具长柄,小,三角形,长宽2-3厘米,顶端渐尖,基部近截形或微心形,边缘具不规则深波状齿,膜质,上面被疏短柔毛或无毛,下面无毛;叶柄细,长3.5-12厘米,基部扩大,但无耳;基生叶和下部茎叶在花期枯萎;下部茎叶具有狭翅的柄,基部近具耳;中部茎叶与下部叶同形,较大,长5-15厘米,宽4-8厘米,基部近截形或戟形,羽状脉;叶柄长3.5-6厘米,具狭翅,基部具耳;上部叶渐小,叶柄短且具宽翅,基部扩大成明显圆形半抱茎的耳;最上部叶,无柄,披针形,尾状渐尖,基部心状半抱茎。头状花序初时直立,后下垂,盘状,多数,排成密长叉状顶生和上部腋生圆形伞房花序;花序梗长2-3毫米,被黄褐色短柔毛,具2-3丝状小苞片。总苞圆柱形,长6-7毫米,宽1.5-2毫米,具外层苞片;苞片2-3,极小;总苞5,线形,宽约1毫米,钝,上端黑色,近革质,边缘狭膜质,外面无毛。小花全部管状,5-6,花冠黄色,长6-7毫米,管部长2-2.5毫米,檐部漏斗状;裂片卵状三角形,长0.8-1毫米,尖,上端具乳头状毛。花药长2-2.5毫米,基部具钝耳;附片披针形;花药颈部较长,向基部渐膨大;花柱分枝长0.7毫米,截形,上端具乳状毛。瘦果(未成熟)圆柱形,长1.5毫米,无毛。冠毛白色,长5-6毫米,脱落。花期9月。
  产云南(弥勒)。生于海拔2000-2400米的山坡林下。
形态特征:多年生具匐匍枝草本,根状茎未详。茎单生,直立,高60—70厘米,花序下部不分枝,幼时被疏短柔毛,迅速脱落。基部和匐枝上叶具长柄,小,三角形,长宽2—3厘米,顶端渐尖,基部近截形或微心形,边缘具不规则深波状齿,膜质,上面被疏短柔毛或无毛,下面无毛;叶柄细,长3.5—12厘米,基部扩大,但无耳;基生叶和下部茎叶在花期枯萎;下部茎叶具有狭翅的柄,基部近具耳;中部茎叶与下部叶同形,较大,长5—15厘米,宽4—8厘米,基部近截形或戟形,羽状脉;叶柄长3.5—6厘米,具狭翅,基部具耳;上部叶渐小,叶柄短且具宽翅,基部扩大成明显圆形半抱茎的耳;最上部叶,无柄,披针形,尾状渐尖,基部心状半抱茎。头状花序初时直立,后下垂,盘状,多数,排成密长叉状顶生和上部腋生圆形伞房花序;花序梗长2—3毫米,被黄褐色短柔毛,具2—3丝状小苞片。总苞圆柱形,长6—7毫米,宽1.5--2毫米,具外层苞片;苞片2—3,极小;总苞5,线形,宽约1毫米,钝,上端黑色,近革质,边缘狭膜质,外面无毛。小花全部管状,5—6,花冠黄色,长6—7毫米,管部长2—2.5毫米,檐部漏斗状;裂片卵状三角形,长0.8—1毫米,尖,上端具乳头状毛。花药长2—2.5毫米,基部具钝耳;附片披针形;花药颈部较长,向基部渐膨大;花柱分枝长0,7毫米,截形,上端具乳状毛。瘦果(未成熟)圆柱形,长1.5毫米,无毛。冠毛白色,长5—6毫米,脱落。花期9月。
产地分布:产云南(弥勒)。生于海拔2 000—2 400米的山坡林下。
参考文献:Senecio humbertii Chang ln Bull.Fan Mem.Inst.Bi01.Bot.7:152.1936;S. Y.Hu in Quart.Journ. Taiwan Mus. 21:48. 1968;C.Jeffrey et Y. L Chen in KewBull.39(2):374. 1984.——Seneciocompacti Changinsehed.

《Flora of China》 Vol. 20-21 (2011)
16. Senecio humbertii C. C. Chang, Bull. Fan Mem. Inst. Biol., Bot. 7: 153. 1936.
弥勒千里光 mi le qian li guang
Herbs, perennial, rhizomatous, stoloniferous. Stem solitary, erect, 60-70 cm tall, not branched below synflorescence, sparsely puberulent when young, soon glabrous. Basal and stolon leaves long petiolate; petiole 3.5-12 cm, slender, basally expanded but not auriculate; blade deltoid, small, 2-3 × 2-3 cm, membranous, abaxially glabrous, adaxially sparsely puberulent or glabrous, base subtruncate or weakly cordate, margin irregularly sinuate-dentate, apex acuminate. Basal and lower stem leaves withered by anthesis; lower stem leaves with narrowly winged petioles, basally subauriculate. Median stem leaves similar but larger; petiole 3.5-6 cm, narrowly winged, basally auriculate; blade 5-15 × 4-8 cm, base subtruncate or hastate, pinnately veined. Upper leaves smaller, with shorter, broadly winged petioles, basally dilated into conspicuous rounded subamplexicaul auricles. Uppermost leaves sessile, lanceolate, basally cordate-semiamplexicaul, apically caudate-acuminate. Capitula at first erect, later nodding, discoid, numerous, arranged in dense long-stalked terminal and upper axillary rounded corymbs; peduncles 2-3 mm, fulvous puberulent; bracteoles 2 or 3, filiform. Involucres cylindric, 6-7 × 1.5-2 mm, calyculate; bracts of calyculus 2 or 3, minute; phyllaries 5, linear, ca. 1 mm wide, subleathery, glabrous, margin narrowly membranous, apically obtuse and black. Disk florets 5 or 6, corolla yellow, 6-7 mm, with 2-2.5 mm tube and funnelform limb; lobes ovate-triangular, 0.8-1 mm, apically acute, papillose. Anthers 2-2.5 mm, basally obtusely subauriculate, appendages lanceolate; antheropodia rather long, basally gradually dilated. Style branches ca. 0.7 mm. Achenes (immature) cylindric, ca. 1.5 mm, glabrous. Pappus deciduous, white, 5-6 mm. Fl. Sep.● Forests on slopes; 2000-2400 m. Yunnan (Mile).

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