[en-doh-thee-shee-uh
m, -see-uhm] 
[-shee-uh, -see-uh] . Botany. | 1. | the lining of the cavity of an anther. |
| 2. | (in mosses) the central mass of cells in the rudimentary capsule, from which the archespore is generally developed. |
| 3. | (in bryophytes) the central mass of cells in the capsule, including the spores and columella. |