中文名（Chinese Name）：两色金鸡菊
学名（Scientific Name）：Coreopsis tinctoria Nutt.
英文名（English Common Name）：golden tickseed
别名（Chinese Common Name）：蛇目菊
异名（Synonym）：Calliopsis tinctoria (Nutt.) DC.  Bidens tinctoria (Nutt.) Baill.  Coreopsis bicolor (Rchb.) Bosse ex Buchenau  Coreopsis stenophylla   Calliopsis cardaminefolia DC.  Calliopsis atropurpurea Hort. ex Steud.  Calliopsis bicolor Rchb.  Coreopsis atkinsoniana Douglas ex Lindl.  Coreopsis cardaminefolia (DC.) Torr. & A.Gray  Diplosastera tinctoria (Nutt.) Tausch  Coreopsis similis   Coreopsis tinctoria f. atropurpurea (Hook.) Fernald  Coreopsis tinctoria var. imminuta Sherff  Coreopsis tinctoria var. tinctoria Nutt.
科属（Family & Genus）：菊科（Compositae）金鸡菊属
形态特征（Description）：一年生草本，无毛，高30-100厘米。茎直立，上部有分枝。叶对生，下部及中部叶有长柄，二次羽状全裂，裂片线形或线状披针形，全缘；上部叶无柄或下延成翅状柄，线形。头状花序多数，有细长花序梗，径2-4厘米，排列成伞房或疏圆锥花序状。总苞半球形，总苞片外层较短，长约3毫米，内层卵状长圆形，长5-6毫米，顶端尖。舌状花黄色，舌片倒卵形，长8-15毫米，管状花红褐色、狭钟形。瘦果长圆形或纺锤形，长2.5-3毫米，两面光滑或有瘤状突起，顶端有2细芒。花期5-9月，果期8-10月。
分布（Distribution）：原产北美，我国各地有栽培。
用途（Use）：
引自中国植物志英文版FOC Vol. 20-21 Page 860
Coreopsis tinctoria Nuttall, J. Acad. Nat. Sci. Philadelphia. 2: 114. 1821.
两色金鸡菊 liang se jin ji ju | Asteraceae  | Coreopsis
Annuals, (10-)30-70(-150) cm. Leaves: proximal blades usually 1(-3)-pinnate, terminal lobes ovate-lanceolate to oblanceolate, 10-60 × 5-25 mm; cauline blades usually 1-3-pinnate, rarely simple, simple blades or terminal lobes linear-lanceolate to linear or filiform, 10-45 × 0.5-5 mm. Peduncles 1-15 cm; calycular bracts deltate-lanceolate, 1-3+ mm; phyllaries ± oblong-lanceolate to ovate-lanceolate, 4-9 mm. Ray limbs usually yellow with red-brown blotch, sometimes red-brown in proximal 1/3-9/10 and distally yellow, rarely yellow throughout, 12-18+ mm. Disk corollas 2.5-3+ mm. Achenes 1.5-4 mm, wings absent or 0.1-0.7 mm wide; pappus absent, or of 1 or 2 cusps or subulate scales 0.1-1 mm. Fl. Jun-Aug. 2n = 24.
Moist sandy or clay soils, sometimes alkaline flats, prairies, ditches, disturbed sites. Widely cultivated and naturalized in China [native to North America].
Coreopsis tinctoria is widely grown in public and residential gardens, is grown commercially (for cut flowers), and has become widely established in the Flora area.（责任编辑：徐晔春）