| 释义 |
episperm Bot.|ˈɛpɪspɜːm|
[f. Gr. ἐπί upon + σπέρµα seed: see epi- and sperm n.]
The exterior covering of a seed. Hence epiˈspermic a.
1819J. Lindley tr. Richard's Observ. Fruits & Seeds 17 The covering or integument peculiar to the seed being the most exterior of its constituent parts, I give it the name of Episperm. Ibid. 32 If..the entire kernel..is immediately covered over by the episperm, it is called epispermic. 1861R. Bentley Man. Bot. 337 The terms most frequently used, are testa or episperm for the outer coat. |