| 单词 | form-genus |
| 释义 | > as lemmasform-genus form-genus n. Biology a collective group of form-species showing morphological similarities but not necessarily a genetic relationship. ΘΚΠ the world > life > biology > taxonomy > taxon > [noun] > genus or sub-genus > form-genus or form-species form-genus1873 form-species1886 1873 Q. Jrnl. Microsc. Sci. 13 411 He is careful to retain a complete and concise enumeration of the various ‘artificial species’, ‘form-genera’, or ‘phases’, in which the natural species may manifest themselves. 1900 B. D. Jackson Gloss. Bot. Terms 174/2 The form-genus Oidium. 1935 E. A. Bessey Text-bk. Mycol. xiv. 375 Since the genera based on asexual structures do not necessarily indicate true relationships of the included species the term ‘form genus’ was suggested for such groups by Schroeter. 1960 H. H. Swinnerton Fossils x. 58 These genera are therefore not based upon genetic affinity but upon outstanding similarities of form. They are in fact morphological or form genera marking grades of evolution. < as lemmas |
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