velum
英 ['viːləm]
美['viləm]
- n. [生物] 缘膜；菌膜；软腭
英英释意
- 1. membrane of the young sporophore of various mushrooms extending from the margin of the cap to the stem and is ruptured by growth; represented in mature mushroom by an annulus around the stem and sometimes a cortina on the margin of the cap
- 2. membrane initially completely investing the young sporophore of various mushrooms that is ruptured by growth; represented in the mature mushroom by a volva around lower part of stem and scales on upper surface of the cap
- 3. a muscular flap that closes off the nasopharynx during swallowing or speaking