Four species of ceratiodes were studied about organic morphology and embryonal development and biological characteristics . the results were showed as follows : c . arborescens and c . ewersmanniana were more dominant than c . latens and c . lanata in spire and vegetative period . in flowering phase of male flower , c . arborescens and c . latens arrive the maximum peak of flowering during 8 : 00 - 11 : 00 . c . lanata arrive the maximum peak of flowering during 11 : 00 - 1 : 00 , but in flowering phase of female flower , three species arrive the maximum peak of flowering in 14 : 00 ; temperature of female flower was righter than one of male flower 本文对驼绒藜属4种植物进行了器官形态学及解剖学、胚胎发育及生物学特性的研究，结果表明： ４种材料幼苗期和营养生长期的生长状况均是华北驼绒藜、心叶驼绒藜比驼绒藜、北美驼绒藜占优势；开花规律,华北驼绒藜和驼绒藜雄花均在8 : 00 - 10 : 00达开放高峰，北美驼绒藜在11 : 00 - 1 : 00达开放高峰，而三者雌花均在14 : 00左右达开放高峰。
The nutritive composition and hormone contents of seed existed differen - ces between species , ecotypes or plants with different age . the correlation between sugar content and seed physiological activity was not obvious , while n , p contents and seed physiological activity obviously correlated 驼绒藜属牧草种子在营养成分及激素含量上存在种间、生态型间及株龄间的差异，相关分析表明，种子含糖量及内源激素与种子活力相关性均不显著，种子氮、磷含量与种子活力有显著的相关性。
First , the ceratoides . l seed belongs to low nutrition seed and it " s nature longetivity was short ; second , because of the harsh environment during seed developing , seeds were short of nutrition and the development were uncomplete ; third , because of the unsuitable storage condition , especially because the water contens was higher , the seed deteriorated rapidly 对驼绒藜属植物种子短命和劣变原因的初步分析，认为是由遗传和环境两方面的原因所至：一是由于驼绒藜植物属于高数量低营养种子类型，种子自然寿命较短。二是由于种子发育过程中自然环境恶劣，造成种子营养不良，发育程度较差。
