pseudogenusn.

Brit.

/ˈs(j)uːdə(ʊ)ˌdʒiːnəs/, U.S.

/ˈsudoʊˌdʒinəs/

Inflections: Plural pseudogenera.

Origin: Formed within English, by compounding. Etymons: pseudo- comb. form, genus n.

Etymology: < pseudo- comb. form + genus n.

Botany and Zoology. Now rare.

A spurious or invalid genus of plants or animals, such as one based on superficial similarities between unrelated species, or on forms (e.g. developmental stages) that have been mistakenly regarded as distinct. Also: a name used for a group of hybrid forms, esp. intergeneric hybrids.

ΚΠ

1857 Philos. Trans. (Royal Soc.) 147 550 A wide field of observation is thus opened in order to allot to each individual member of these pseudo-genera its proper place in the mycological system.

1887 H. E. F. Garnsey & I. B. Balfour tr. H. A. de Bary Compar. Morphol. & Biol. Fungi iii. vii. 416 Excessive development of roundish soredia-heaps..on a crustaceous or foliaceous thallus..gives rise to the forms on which Acharius has founded his pseudo-genus Variolaria.

1928 Copeia No. 167. 33 A pseudogenus is an artificial assemblage of species..exhibiting a similarity which might be physiological or the result of homoplasy.

1955 Jrnl. Paleontol. 29 1068/2 His nomenclature is faulty for he proposed a formal name for a ‘pseudogenus’ (hybrid group) whose members are likewise named as a ‘new species’.

1988 Paleobiology 14 382/2 If pseudogenera of extreme duration were chiefly responsible for the observed differences between survivorship curves of living and extinct genera, the differences between curves should decrease up the taxonomic hierarchy.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	pseudogenus
释义	pseudogenusn. Brit. /ˈs(j)uːdə(ʊ)ˌdʒiːnəs/, U.S. /ˈsudoʊˌdʒinəs/ Inflections: Plural pseudogenera. Origin: Formed within English, by compounding. Etymons: pseudo- comb. form, genus n. Etymology: < pseudo- comb. form + genus n. Botany and Zoology. Now rare. A spurious or invalid genus of plants or animals, such as one based on superficial similarities between unrelated species, or on forms (e.g. developmental stages) that have been mistakenly regarded as distinct. Also: a name used for a group of hybrid forms, esp. intergeneric hybrids. ΚΠ 1857 Philos. Trans. (Royal Soc.) 147 550 A wide field of observation is thus opened in order to allot to each individual member of these pseudo-genera its proper place in the mycological system. 1887 H. E. F. Garnsey & I. B. Balfour tr. H. A. de Bary Compar. Morphol. & Biol. Fungi iii. vii. 416 Excessive development of roundish soredia-heaps..on a crustaceous or foliaceous thallus..gives rise to the forms on which Acharius has founded his pseudo-genus Variolaria. 1928 Copeia No. 167. 33 A pseudogenus is an artificial assemblage of species..exhibiting a similarity which might be physiological or the result of homoplasy. 1955 Jrnl. Paleontol. 29 1068/2 His nomenclature is faulty for he proposed a formal name for a ‘pseudogenus’ (hybrid group) whose members are likewise named as a ‘new species’. 1988 Paleobiology 14 382/2 If pseudogenera of extreme duration were chiefly responsible for the observed differences between survivorship curves of living and extinct genera, the differences between curves should decrease up the taxonomic hierarchy. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1857
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