艾叶是多年生草本,高45—120厘米。茎直立,强硬,密枝灰白色绵毛,并具明显条稷。基生叶在花时枯萎,具长柄,柄长1.4—2厘米,叶片三出羽状深裂,裂片具粗齿或再次三裂,先端尖,基部楔形,下延成窄翅,上面疏被白色蛛丝状,毛呈灰白色,下面密被白色茸毛呈白色,渐向上叶渐小,柄亦短、叶片呈长园形或披针形,三 The leaves are perennial herbs, 45-120 cm high. Stems erect, tough, dense branches gray white wool, and with a clear bar. Basal leaves withered when flowering, long-stemmed, pedicel 1.4–2 cm long, three leaves pinnately deeply lobed, lobes with coarse teeth or trifid, apex pointed, base cuneate, narrowed into narrow wings, sparsely covered above White spider silk-like, grayish-white hair, densely covered with white and white hair below, gradually turning upward toward lower leaves, stalks too short, leaves oblong or lanceolate, three