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甘肃多榔菊Doronicum gansuense

时间:2013-07-23 14:19来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):甘肃多榔菊 学名( Scientific Name ): Doronicum gansuense Y. L. Chen 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Aronicum altaicum DC. Doronicum cavillieri lv.Fern. Nieto





中文名(Chinese Name):甘肃多榔菊
学名(Scientific Name):Doronicum gansuense Y. L. Chen
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Aronicum altaicum DC.  Doronicum cavillieri Álv.Fern. & Nieto Fel.
科属(Family & Genus):菊科(Compositae)多榔菊属
形态特征(Description):多年生草本。根状茎细,直立或斜升,颈部覆盖以褐色残叶基。茎单生或稀有不育的匍枝,直立,高10-20 厘米,不分枝,绿色,无毛或上部,特别在头状花序下被黄褐色腺毛。基部叶及匍枝上叶其长柄,倒卵状长圆形,长2.5厘米,宽1.5-2厘米,顶端圆形,基部微心形,叶柄细,长3.5-7.5厘米,无翅,下部茎叶倒卵形或倒卵状匙形,顶端圆形或钝,基部狭成长达2厘米具翅的叶柄,叶柄基部稍扩大,多少膜质,中部及上部茎叶无柄,卵形至卵状长圆形,长2.5-4厘米,宽1-2.5厘米,顶端钝或圆形,基部心形抱茎,全缘或稀具不明显细齿,具缘毛,两面无毛或被极疏短毛。头状花序单生于茎端,连同舌状花径3-5厘米;总苞半球形或宽钟形,径1.5-2厘米,总苞片2层,绿色,草质近等长,外层狭披针形,长10-13毫米,宽1.5-1.8毫米,内层线状披针形,宽1-1.3毫米,全部渐尖,背面被疏或较密白色短毛;舌状花长1.8-2.3厘米,管部长2毫米,无毛;舌片黄色,长16-20毫米,宽1.5-2-毫米,具4工脉,顶端具3细齿;管状花花冠黄色,长4.5-5毫米,管部长2毫米;檐部钟状,裂片卵形,长约1毫米;花药基部钝;花柱分枝顶端截形;瘦果圆柱形,长约2毫米,具肋,无毛,全部小花有冠毛,冠毛黄褐色,长3-4毫米,糙毛状。花期7-8月。
分布(Distribution):产甘肃及陕西,生于海拔3100米的草坡、林下。
用途(Use):
引自中国植物志英文版FOC Vol. 20-21 Page 373
Doronicum gansuense Y. L. Chen, Acta Phytotax. Sin. 36: 73. 1998.
甘肃多郎菊 gan su duo lang ju | Asteraceae  | Doronicum
Doronicum cavillieri Álvarez Fernández & Nieto Feliner.
Rhizomes erect or ascending, slender, clad in persistent brown petiole bases. Stem solitary or rarely with stoloniferous branches, green, erect, 10-20 cm tall, simple, glabrous, or upper part especially below capitula yellow-brown glandular hairy. Radical and stoloniferous leaves long petiolate; petiole 3.5-7.5 cm, slender, not winged; leaf blade obovate-oblong, ca. 2.5 × 1.5-2 cm, base slightly cordate, apex rounded. Lower stem leaves with petiole dilated at base; blade obovate or obovate-spatulate, ± membranous, base narrowed into ca. 2 cm winged petiole, apex rounded or obtuse. Median and upper leaves sessile, ovate to ovate-oblong, 2.5-4 × 1-2.5 cm, both surfaces glabrous or sparsely puberulent, base cordate, semiamplexicaul, margin apically entire or rarely inconspicuously denticulate, ciliate, apex obtuse or rounded. Capitula solitary, terminal, 3-5 cm in diam. Involucre hemispheric or broadly campanulate, 1.5-2 cm in diam.; phyllaries 2-seriate, green, subequal, herbaceous; outer phyllaries narrowly lanceolate, 10-13 × 1.5-1.8 mm; inner phyllaries linear-lanceolate, 1-1.3 mm wide, abaxially laxly or densely white hairy, apex acuminate. Ray florets 1.8-2.3 cm, with ca. 2 mm tube, glabrous; lamina yellow, 16-20 × 1.5-2 mm, 4-veined, apically 3-denticulate. Disk florets yellow, 4.5-5 mm, with ca. 2 mm tube and campanulate limb; lobes ovate, ca. 1 mm; anthers obtuse at base; style branches apically truncate. Achenes cylindric, ca. 2 mm, ribbed, gla-brous. Pappus present in all florets, yellow-brown, 3-4 mm, scabrid. Fl. Jul-Aug.
● Grassy slopes, forest understories; ca. 3100 m. Gansu.

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