| 单词 | perigynium | 
| 释义 | perigyniumnoun  peri·gyn·i·um     plural perigynia  -ēə 1   : a fleshy cup or tube that surrounds the archegonium of various bryophytes (as of the liverwort group) and that is formed either from the stem apex or from the thallus   2   : the saclike bract that subtends the pistillate flower of sedges of the genus Carex and that in fruit becomes a flask-shaped envelope investing the achene   | 
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