论文部分内容阅读
肿柄菊(Tithonia diversifolia)又名假向日葵,是菊科肿柄菊属多年生半灌木状草木植物,高2～3米。根系发达,茎粗壮,分枝能力强。叶为单叶互生,卵形、卵状三角形或近圆形,长7～20厘米,3～5深裂,有长叶柄,基出三脉。为短日照植物,一般10月中旬现蕾,11月和12月是盛花期,至翌年2月才终花,花期很长;头状花序大,宽8～15厘米,顶生于假轴分枝的长梗上,花序梗呈棒锤状,故名肿柄菊;头状花序具总苞片4层,革质;舌状花一层,9～15朵,俗称“花瓣”,黄色,舌片长卵形,顶端有不明显的3齿;筒状花俗称“花心”,黄色,每个头状花序具125～250朵筒
Tithonia diversifolia (Tithonia diversifolia), also known as fake sunflowers, is a Compositae Tuschina perennial shrub-like plants, 2 to 3 meters high. Roots developed, stem thick, strong ability to branch. Leaves for the leaves alternate, oval, oval triangular or nearly circular, 7 to 20 cm long, 3 to 5 deep cleft, a long petiole, the base of three veins. Short-day plants, the general budding in mid-October, November and December is full of flowering, to the following year in February before the final flowering, flowering is very long; head large, 8 to 15 cm wide, top born in the false axis Branches of the long stem, the stem is hammer-shaped peduncles, hence the name of the swelling handle chrysanthemum; head bracts with 4 layers, leathery; tongue layer of flowers, 9 to 15, commonly known as “petals,” yellow, Long tongue oval, inconspicuous at the top 3 teeth; tubular flowers commonly known as “Fa flower”, yellow, each with 125 to 250 flower head cap