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单词 pteridospermous
释义

> as lemmas

pteˌridoˈspermous
pteˌridoˈspermous adj. of, or relating to,or characteristic of a pteridosperm.
ΚΠ
1905 Proc. Royal Soc. B. 76 245 (title) A Type of pteridospermous seed from the Coal Measures.
1956 S. Haden-Guest et al. World Geogr. Forest Resources 29 There is considerable reason to believe that the poleward temperate regions of the time also supported at least a scattered assortment of pteridospermous types.
2000 Paleogeogr., Paleoclimatol. & Paleoecol. 161 74/1 This taxonomic assignment is based on the persistent presence of pteridospermous reproductive organs in the investigated floras.
extracted from pteridospermn.
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as lemmas
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更新时间:2024/12/23 17:51:52