The results were as follows . the shape of pollen was ellipsoid or long ellipsoid , and the pollen exine usually had net structure 结果表明，水仙属植物的花粉形状主要为椭圆体、长椭圆体，花粉外壁为网状纹饰。
2.
The result shows that there are some differences among 7 species on the proximal face , the exine ornamention and shape 观察结果显示：孢子近极薄壁区的有无、形状及外壁纹饰的细微结构等方面，在属间和种间存在一定的差异。
3.
It consists of an air - filled protuberance on each side of the pollen grain developed by the separation of the exine layers , giving the pollen a characteristic winged appearance 它是花粉粒外壁向外扩展而形成的囊状结构，在花粉粒两侧呈翅状，其内充满空气。
4.
The results indicate that pollen grains radially symmetrical , apolar , spheroidal , the exine with distinct spines and temuity or perforation , usually the spines very small and dense 7urn ，无极面、无萌发孔。花粉粒表面具三角形或乳突状小刺，小刺密集整齐，密度在（ 2
5.
( 3 ) the pollen morphology of 19 species was investigated under sem . the results show that the morphological characteristics and exine ornamentation are not similar among species and sections （ 3 ）对该属19种植物花粉形态学观察发现，花粉形态和外壁纹饰在组间和种间存在着一定差异。
6.
They are globose , subglobose , oblate and prolate in shape . the germination apertures are absent , or present and are irregularly poroid , 3 - colpate , 4 - colpate , 3 - 4 - colpate , pantocolpate and 3 - colporate . the exine ornamentation is spinulose , tuberculate , variously striate , striate - foveolate , striate - reticulate , rugose - sinuate , minutely reticulate and reticulate 条纹网状、皱波状、细网状和网状c沟膜近光滑、具小颗粒、具小刺状突起或具瘤状突起。
7.
The colpal membrane is nearly smooth but with granular , spinulose or tuberculate protuberances . the pollen grains show great variations between the genera in the tribe hyoscyameae in terms of the presence or absence of the germination aperture and its type , and the exine ornamentation , and thus can be used as important characters in the consideration of the phylogenetic relationship of this tribe 各属植物的花粉形态在萌发孔的有无、萌发孔的类型和外壁纹饰等方面有较大的差异，可以作为探讨属间分类和系统关系的重要依据c天仙子族植物花粉萌发孔的演化趋势为：无萌发孔一3 、 4沟一3孔沟。
8.
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。
9.
Abstract : the pollen morphology of 5 species of corydalis from northeast china was observed and compared by sem . the results declared the shape and size of the pollen and exine sculpture of the 5 species were basically stable and could serve as a taxonomic character 文摘:用扫描电镜对东北延胡索极其近缘植物的花粉形态进行了观察，结果发现花粉粒在形状、大小、外壁纹饰、沟的长短及宽度等方面均有区别，从中获得了东北延胡索及其近缘植物分类方面的孢粉学依据.因此花粉的特征可用于区别延胡索类植物
