| 单词 | Botrychium virginianum |
| 释义 | Botrychium virginianum (once / 3939771 pages) n WORD FAMILY Botrychium virginianum n American fern whose clustered sporangia resemble a snake's rattle Syn|Hyper rattlesnake fern grape fern a fern of the genus Botrychium having a fertile frond bearing small grapelike clusters of spore cases |
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