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网脉橐吾Ligularia dictyoneura

时间:2013-11-11 14:16来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 网脉橐吾 学名( Scientific Name ): Ligularia dictyoneura (Franch.) Hand.-Mazz. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Senecillis dictyoneura (Franch.) Kitam. Senec
中文名(Chinese Name):网脉橐吾
学名(Scientific Name):Ligularia dictyoneura (Franch.) Hand.-Mazz.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Senecillis dictyoneura (Franch.) Kitam.  Senecio dictyoneurus Franch.  Senecillis dictyonura (Franch.) Kitam.  Senecio dictionurus Franch.
科属(Family & Genus):菊科Compositae橐吾属Ligularia
形态特征(Description):多年生灰绿色草本。根肉质,粗壮。茎直立,紫红色,高33-124厘米,光滑,实心,具白色髓,基部直径2.5-4毫米,被厚的褐色枯叶柄纤维包围。丛生叶具柄,柄长8-22厘米,光滑,上面平,下面圆形,截面为半圆形,实心,坚硬,上半部有狭翅,叶片卵形、长圆形或近圆形,长8-30厘米,宽5-21厘米,先端圆形,边缘有锯齿或仅有软骨质小齿,基部心形,叶革质,两面光滑,叶脉羽状,中脉粗,宽达5毫米,侧脉网状在两面均明显突起;茎中下部叶近无柄,叶片倒卵形或卵形,长7-16厘米,宽4-11厘米,先端钝,边缘有齿,基部半抱茎或下部者鞘状抱茎;茎上部叶无柄,卵状披针形至线形。总状花序长达30厘米,幼时密集近头状,后伸长,疏散;苞片及小苞片线形,长不逾10毫米;花序便不等长,长达6.5厘米,被密的黄褐色有节短柔毛;头状花序多数,辐射状;总苞陀螺形或近钟形,长6-9毫米,宽4-5毫米,总苞片6-8,2层,长圆形,宽3-4毫米,先端宽三角形,急尖或有短尖头,被褐色睫毛,背部黑褐色,光滑,内层具宽膜质边缘。舌状花黄色,4-6,舌片长圆形,长6-8(20)毫米,宽3-4毫米,先端圆形,管部长约3毫米;管状花多数,高于总苞,长5-6毫米,管部长2.5-3毫米,冠毛黄白色,与花冠等长。瘦果(未熟)光滑。花期6-9月。
分布(Distribution):产云南西北部、四川西南部。生于海拔1900-3600米的水边、林下、灌丛及山坡草地。
用途(Use):
引自中国植物志英文版:FOC Vol. 20-21 Page 379, 397
Ligularia dictyoneura (Franchet) Handel-Mazzetti, Vegetationsbilder. 22(Heft 8): 6. 1932.
网脉橐吾 wang mai tuo wu| Asteraceae  | Ligularia
Senecio dictyoneurus Franchet, Bull. Soc. Bot. France 39: 294. 1893; Ligularia platyphylla Handel-Mazzetti; Senecillis dictyoneura (Franchet) Kitamura.
Plants grayish green. Stem erect, purplish red, 33-124 cm tall, 2.5-4 mm in diam. at base, solid, glabrous. Basal leaves petiolate; petiole 8-22 cm, glabrous, below rounded, above flat, middle to distal petioles narrowly winged; leaf blade oblong, ovate, or suborbicular, 8-30 × 5-21 cm, glabrous, pinnately veined, midvein robust, to 5 mm wide, with prominent reticulate lateral veins on both surfaces, base cordate or slightly subtruncate, margin dentate or subentire, apex rounded. Middle to distal stem leaves subsessile, obovate to ovate, 7-16 × 4-11 cm, base semiamplexicaul or tubular-amplexicaul, margin dentate, apex obtuse. Distalmost stem leaves sessile, ovate-lanceolate to linear. Synflorescence racemose, to 30 cm, initially densely clustered, elongating in fruit, lax; leaflike and supplementary bracts linear, less than 1 cm; peduncles unequal, to 6.5 cm, densely shortly yellowish brown pilose. Capitula numerous. Involucre turbinate or subcampanulate, 6-9 × 4-5 mm, outside dark brown, glabrous; phyllaries 6-8, in 2 rows, oblong, 3-4 mm wide, brown ciliate, apex broadly triangular, acute, or shortly mucronate; inner phyllaries broadly membranous at margin. Ray florets 4-6, yellow; lamina oblong, 6-8(-20) × 3-4 mm, apex rounded; tube ca. 3 mm. Tubular florets numerous, 5-6 mm, higher than involucre; tube 2.5-3 mm. Achenes dark brown, cylindric, 3.5-5.5 mm. Pappus yellowish white, as long as tubular corolla. Fl. Jun-Aug. 2n = 58*.
● Stream banks, forest understories, grassy slopes, scrub; 1900-3600 m. SW Sichuan, Xizang, NW Yunnan.
 








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