These leaves arise from an underground stem--rhizome--from which also extend the roots . 这些叶都由地下茎（根茎）产生，地下茎也有根。
2.
The aromatic , underground stem of the sweet flag , yielding an oil used in perfumery 菖蒲根甜菖蒲的芳香的地下茎，可产生一种用于香水之中的油
3.
The stem is reduced to a disklike structure , bearing concentric layers of fleshy leaf bases that comprise the food store 由许多肥厚的肉质鳞叶包围扁平或圆盘状的地下茎，其中储藏着大量的营养物质。
4.
It possesses erect leaves and shoots but creeping stems or rhizomes . its flowers are pollinated under water and develop into fruits and seeds 它有直立的叶和枝条，但也有匍匐的茎或地下茎。它是在水中传播花粉、结果及发芽的。
5.
Leucoplast a colorless plastid , i . e . one not containing chlorophyll or any other pigment . leucoplasts are common in the cells of roots and underground stems and storage organs 白色体：一种无色的质体，不含叶绿素和任何其它色素。白色体多存在于根部细胞、地下茎和储藏器官中。
6.
The vegetative status and the flowering and fruiting developmental rhythm of changnienia amoena were investigated in tiantangzhai population of anhui province during the flowering and fruiting period 摘要对安徽省天堂寨自然保护区独花兰野生种群的花果期节律和营养体状态研究表明，开花植株占观察样本的37 . 5 % ，个体是否开花与假鳞茎数目、地下茎总体积和叶面积呈极显著相关关系。
