Abstract: Tugarineuia mongolica has a tubular stylaar nectary located at the base of the style.The necta-ry, which lacks special vascular bundleis , is composed of secretory epidermis and nectariferous rissue.Stomata are present in the epidermis and there are well-developed space under them. The basal cells of the nectary are adjacent to the vacular bundle of the style During the development of nectary, both the struc-ture and content of cell change regularly. The pre-nectar is provided by the vascular bundle at the base of the style . Nectat is formed in nectariferoud tissue, and it is exareted from the stoma. The relationship be-tween the structure of the nectary and evolution is discussed.

Key words: Tugarinouia mongolica

摘要： 革苞菊(Tugarinovia mongolica)花蜜腺为筒状,围绕花柱基部着生,属于花柱蜜腺类型.蜜腺中无维管束分布,只具分泌表皮和泌蜜组织.分泌表皮细胞排列整齐,表皮细胞之间分散分布着许多气孔,气孔的孔下室发达.蜜腺基部细胞与花柱维管束相邻.随着蜜腺的发育,泌蜜组织的细胞结构和储藏物质呈规律性变化.原蜜汁的来源主要是由花柱基部维管束提供多糖,经过泌蜜组织加工成蜜汁后,由分泌表皮上的气孔将蜜汁排出体外.同时讨论了革苞菊花蜜腺结构与进化的相关性问题.

关键词: 革苞菊, 花蜜腺, 解剖学