学名(拉丁名) | Doronicum conaense |
中文名 | 错那多榔菊 |
命名人 | Y. L. Chen |
中文科名 | 菊科 |
拉丁属名 | Doronicum |
类型 | species |
拉丁科名 | Compositae |
中文属名 | 多榔菊属 |
学名(拉丁名) | Doronicum conaense |
命名人 | Y. L. Chen (accepted name) |
拉丁属名 | Doronicum |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Doronicum conaense |
中文名 | 错那多郎菊 |
拉丁属名 | Doronicum |
类型 | species |
拉丁科名 | Asteraceae |
学名(拉丁名) | Doronicum conaense |
中文名 | 错那多榔菊 |
中文科名 | 菊科 |
拉丁属名 | Doronicum |
类型 | species |
拉丁科名 | Asteraceae |
中文属名 | 多榔菊属 |
Rhizomes short, not tuberous, with numerous fibrous roots. Stem solitary, erect, green, striate, 60-90 cm tall, rather stout, 7-8 mm in diam., simple or branched on synflorescences, scattered glandular hairy in upper part, subglabrous in lower part. Radical leaves often withered by anthesis. Median stem leaves sessile, ovate-oblong, 4-7 × 2.5-3 cm, membranous, both surfaces scattered adpressed glandular pubescent, especially on veins, base dilated, cordate, semiamplexicaul, margin rounded finely toothed or subentire, apex obtuse or rather acute. Upper stem leaves ovate or ovate-lanceolate, 2.5-4 × 1.5-2 cm, both surfaces sparsely shortly glandular hairy, base cordate, semiamplexicaul, apex acuminate. Capitula 3 or 4 in axillary racemes, with ray florets 2-2.5 cm in diam.; peduncles 3-8 cm, glandular pubescent, apically obconically dilated. Involucres hemispheric, 10-13 × 15-20 mm; phyllaries 2- or 3-seriate; outer phyllaries narrowly lanceolate, 1.5-2 mm wide, abaxially glandular pubescent in lower half, glabrous or subglabrous in upper part, margin long ciliate; inner phyllaries linear-lanceolate or linear, 0.5-0.8 mm wide, ciliate; all phyllaries long acuminate, equal to disk or rather shorter than disk. Ray florets yellow, 8-10 mm with 2.5-3 mm tube, glabrous; lamina oblong or oblong-elliptic, 7-8 × ca. 2 mm, 4-veined, apically 2- or 3-denticulate. Disk florets numerous; corolla yellow-green, 3.4-4 mm, with ca. 2.5 mm tube and campanulate-funnelform limb, lobes ovate-triangular; anthers linear, 1-1.2 mm, basally obtuse; style branches short, obtuse or truncate. Achenes heteromorphic, brown, obconic-oblong, 2.5-3 mm, 10-ribbed; marginal achenes glabrous, without pappus; achenes in disk florets densely white hairy, pappus pallid-yellow, 3-3.5 mm, scabrid. Fl. Jul-Sep.
Thickets on slopes; 3800-3900 m. Xizang (Cona).
6. 错那多榔菊 图版1:5-9
Doronicum conaense Y. L. Chen in Acta Phytotax. Sin. 36 (1): 75, fig. 2. 1998.
多年生草本。根状茎短而非块状,具多数纤维状根。茎单生,直立,高60-90厘米,较粗壮,基部径7-8毫米,不分枝,或仅有花序枝,绿色,具纵条棱,上部有疏生腺状长柔毛,下部近无毛。基部叶在花期常凋落,中部茎叶卵状长圆形,无柄,长4-7厘米,宽2.5-3厘米,顶端钝或短尖,基部稍扩大,心形半抱茎,边缘具圆小尖细齿或近全缘,膜质,两面特别沿脉被疏贴生腺状柔毛;上部茎叶卵形或卵状披针形,长2.5-4厘米,宽1.5-2厘米,顶端短渐尖,基部心形半抱茎,两面有疏短腺毛。头状花序连舌状花径2-2.5厘米,3-4个在茎端及叶腋排成总状花序,花序梗长3-8厘米,被腺状长柔毛,顶端扩大成倒锥形;总苞半球形,长10-13毫米,宽1.5-2厘米;总苞片2-3层,二外层狭披针形,宽1.5-2毫米,边缘具缘毛,背面下半部被腺状柔毛,上部无毛或近无毛;内层线状披针形或线形,宽0.5-0.8毫米,具缘毛,背面无毛,全部苞片顶端长渐尖,与花盘等长或稍短于花盘。舌状黄色,长8-10毫米,管部长2.5-3毫米无毛,舌片长圆形或长圆状椭圆形,稍开展,长7-8毫米,宽约2毫米,具4脉,顶端具2-3细齿;管状花多数,花冠黄绿色,长3.5-4毫米,管部长约2.5毫米,檐部钟状漏斗形,裂卵状三角形;花药线形,长1-1.2毫米;基部钝,附片卵形;花柱分枝短,顶端钝或截形。瘦果异形,倒锥状长圆形,长2.5-3毫米,褐色,具10肋。舌状花的瘦果无毛,无冠毛,管状花的瘦果被密白色短毛;有冠毛;冠毛多数,淡褐黄色,长3-3.5毫米,糙毛状。花期?-9月。
产西藏(错那)。生于山坡灌丛边,海拔3800-3900米。