单词 | Psilopsida |
释义 | Psilopsidaplural noun Psi·lop·si·da sīˈläpsədə : a subdivision of Tracheophyta comprising vascular plants with no roots, leaves only partially differentiated or lacking, no leaf traces, a usually protostelic vascular cylinder, and the sporangia merely terminal enlargements of the stem compare lycopsida , pteropsida , sphenopsida |
随便看 |
|
英语词典包含469781条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。