树蕨 meaning in Chinese

tree fern

The trunk of a palm or tree fern
棕榈树或树蕨的树干
They are classified into 6 ecological types : terrestrial ferns , tree ferns , epiphytic ferns , vine ferns , aquatic ferns and rock ferns according to their growth localities
蕨类植物按生长的地理位置可分为陆生蕨类、树蕨类、附生蕨类、藤本蕨类、水生蕨类、石生蕨类。
What is more , some of the pollen grains and spores i found in the clays and lignites came from conifers and tree ferns that could have grown only at the high altitudes of a mountain range
而且我在黏土及褐煤中发现的花粉粒与孢子，属于针叶树及树蕨，它们只生长在高海拔的山区。