The surface structure of the seeds is cerebelloid , or nearly so in anisodus and hyoscyamus pusillus , and reticulate in all the remaining genera and species . the testa cells fall into two types in terms of their shape and pattern of the cell walls . in one type the testa cells are from polygonal to suborbicular in shape , isometric , with the cell walls being nearly straight , and in the other the testa cells are irregular in shape , often not isometric , with the cell walls being variously sinuate 外种皮细胞形状和周壁式样有两大类，一类为多边形至近圆形，等径，周壁近平直，另一类为形状不规则，常不等径，周壁为各式波状：外种皮细胞周壁内侧有皱波状、瘤状、小颗粒、片状或小刺等各式附属物。
In this paper , the taxonomical problems of tulipa l . from china were studied based on the results of both the field observation and the examination of herbarium specimens , and the analysis of leaf epidermis morphology , pollen morphology , seed coats micromorphology and comparative embryology . the main results are as follows : ( 1 ) tulipa l . from china is taxonomically revised . there are 16 species distrubuted in china and tulipa kuocangshanica d . y . tan , x . r . li et d . y . hong is described as new 本文通过野外调查及凭证标本的考证，并结合叶表皮形态、花粉、种皮的微形态及比较胚胎学等方面的观察，对国产郁金香属植物分类中存在的问题进行了研究，主要内容如下： （ 1 ）对国产郁金香属植物进行了了修订，确认了国产郁金香属植物共有16种，其中新种1个: tulipakuocangshanicad . y . tanx . r . lietd . y . hong 。
According to the statistics of main journals about late 50 years in our country , our phytologists pay attention to the comparative anatomy studies of the carpoplyte , such as the structure of vascular tissue , leaf and leaf epidermis , the structure and development of flower , the characteristic of seed and seed coat , the secretory tissue , some primitive carpophytes and so on 根据近50年国内主要期刊统计，我国植物学者重点在种子植物的维管组织结构、叶及其表皮结构、花的结构和发育、种子及种皮特征、分泌组织以及一些原始种子植物等方面开展了比较解剖研究，为一些植物科、属的系统分类提供了解剖学依据。
The morphological characteristics are recognized as 3 types : nearly globe , nearly boat shape and nearly shield shape . the exine ornamentation can be divided into 5 types : reticulate , steiate - veticulate , tuberculate , verrucate and rugose - sinuate . the morphological characteristics show some vaviations among sections and species in terms of the shape of pollen and the exine ornamentation . and thus can be used as one of characters in the consideration of the classification of this genus . ( 4 ) the micromorphology of the seed coats were observed in 13 species （ 4 ）所观察的该属13种植物的种皮表面纹饰可分为网纹、负网纹和皱波状三大类，且各个种之间在种皮微形态上均存在着一定差异，可以作为分种的依据；在组间，除属于有苞组( sect . amana )的t . edulis和其它组的种类有明显差异外，其余3组之间没有明显的界限，说明郁金香属的种皮微形态特征在组的划分上意义不大，但在种的划分上具有一定的分类学意义。
