Abstract: The morphological characters of stem, leaves, flower, siliques and seeds of Ili wild black mustard have been studied. They are just alike that of original description of Brassica nigra (L. ) Koch. The results of cytogenceic survey shows h = 8, 2n = 16, self-incompatibility. The authors affirmed that the Ili wild black mutrad is Brassica nigra (L.) Koch.

Key words: new record, brassica, koch

摘要： 本文研究了伊犁野油菜的植物学形态，其茎、叶、花、角果和种子，与前人对黑芥的描述一致，n=82n＝16，异花传粉，自交不结实，确认伊犁野油莱为黑芥Brassica nigra(L．)koch)。根据B．nigra与B．campestris在我国的存在，进一步表明了B．Juncea(L.)Czern ＆ Coss可能直接起源于我国。

关键词: 黑芥, 新分布