乐平煤的成煤植物及树皮体的起源

THE COALFORMING PLANTS OF LOPINITE AND GENESIS OF BARKINITE

运用煤中植物残体分析的方法研究了乐平煤的成煤植物，认为乐平煤的主要成煤植物中树蕨辉木类最重要，其次是鳞木类和裸子植物．探讨了乐平煤中树皮体的起源，认为树皮体中的大部分不是来源于树蕨辉木的小根外部皮层中的厚壁组织，也不是来源于鳞木类或裸子植物的周皮，而可能是来源于一种植物的特殊组织，这种植物推测为一种大羽羊齿类植物的根———刺根茎Ｒｈｉｚｏｍｏｐｓｉｓｇｅｍｍｉｆｅｒａ，而这种特殊组织的性质目前还不清楚，可能属于周皮组织，也可能属于其他组织，有待于今后进一步研究．

The coalforming plants of Lopinite are studied by phyteral analysis. It is found that the Psaronius plant played a most important role in the formation of Lopinite, and followed by Lepidodendron plant and gymnosperms. It is discovered that most of the barkinite in Lopinite did not originate from a thick walled tissue, sclerenchyma in the outer cortex of small roots of Psaronius, nor from periderm of Lepidodendron or gymnosperms. It is assumed that it might originate from roots of the gigantopteridsRhizomopsis gemmifera. However, the characteristics of this special tissue are currently unknown. It may belong to a periderm tissue, or may belong to other tissues, which remain to be further investigated.