摘要
对十字花科有争议的岩荠属 Cochlearia、泡果荠属 H illiella、阴山荠属 Yinshania、棒毛荠属 Cochleariella植物的叶片脉序进行了研究。结果表明 :岩荠属为环结曲行羽状脉 ,泡果荠属为直行羽状脉 ,阴山荠属为半直行羽状脉 ,棒毛荠属种的叶脉与浙江泡果荠相似。前 3属植物在网眼的大小、叶缘末级脉和叶先端的形态上也存在着差异。据此作者认为岩荠属、泡果荠属和阴山荠属这 3属植物分开是合理的。但棒毛荠属的分类地位值得进一步研究。还得出这几个属的叶脉演化关系是
The comparative observation on leaf venation in 16 species belong to Cochlearia,Yinshania,Hilliella and Cochleariella were conducted.The rusult shows:Venation of Cochlearia is Brochidodromous;Hilliella is Craspedodromous,Yinshania is Half Craspedodromous and Cochleariella is similar to H.warburgii.The fomer three genera have differences in size of areole,marginal ultimate venation and shape of apex.It is reasonable for the fomer three genera to exist.The taxonomy position of Cochleariella is merit study further.The evolution relationship of venation for these genera is Basal Perfect Actinodromous→Brochidodromous→Craspedodromous.
出处
《武汉植物学研究》
CAS
CSCD
2002年第4期258-262,T001,共6页
Journal of Wuhan Botanical Research
基金
国家自然科学基金资助项目 (3 93 60 0 8)
