中文名:串叶松香草
Name:Silphium perfoliatum L.
科:菊科
Family:Compositae
introduce:本种为菊科松香草属多年生草本植物，株高2-3m。根粗壮，有多节的水平根茎。播种当年仅形成莲座状叶丛，翌年始形成丛生、直立的茎；茎四棱，嫩时有白色毛，长大则光滑无毛。叶长椭圆形，长约40cm，宽30cm左右；叶面皱缩，叶缘有缺刻，叶缘及叶面有稀疏的毛；基生叶有柄，茎生叶无柄。头状花序着生于假2杈分枝顶端；花杂性，外缘2-3层为雌性花，花盘中央为两性花。瘦果心脏在形，扁平，褐色，外线有翅，形状和大小似榆钱而稍长（图90）。细胞染色体：2n＝14。
Chinese name: string leaf pine vanilla
Name: Silphium perfoliatum L. Name: Silphium perfoliatum L.
Section: Asteraceae
Family: Compositae Family: Compositae and
been introduced into Ju Ke Song vanilla: This species is a perennial herb, plant height 2-3m. Root thick, multi-section level roots. Planting only when the formation of the lotus seat-like foliage, the following year, the beginning of the formation of a profusion of upright stems; stem quadrangular, tender white hair, grew smooth and hairless. Leaves oblong, about 40cm, width 30cm or so; leaf wrinkled, margin notched, margin and leaf thinning hair; basal leaves, stalk, stem leaves sessile. The capitulum was born in the top of the fake two branches of a tree branch; spend a miscellaneous nature, the outer edge of the Layer 2-3 female flowers, chrysanthemum central hermaphrodite flowers. Achenes heart-shaped, flat, brown, outside wings, shape and size similar the elm money while longer (Figure 90). Cell chromosomes: 2n = 14.