| 单词 |
coleorhiza |
| 释义 |
‖ coleorhiza Bot.|ˌkɒliːəʊˈraɪzə| [f. Gr. κολεός sheath + ῥίζα root.] The sheath enveloping the radicle or rudimentary root in the embryo of grasses and other phanerogams; the root-sheath.
1866in Treas. Bot. 1880Gray Struct. Bot. ii. 26 The radicle is completely enclosed by..a peculiar sheath..named the Coleorhiza. 1882Vines Sachs' Bot. 638 In Ranunculus Ficaria, a tuberous lateral root is produced below the primary axis of the embryo, sheathed by a coleorhiza. |

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