deoperculate

from The Century Dictionary.

• To cast the operculum; dehisce: said of some liverworts.
• In botany, having lost the operculum: applied to the capsule of a moss or liverwort after the operculum has fallen off.
• Having an operculum that does not spontaneously separate from the sporophore, as certain mosses.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Bot.) Having the lid removed; -- said of the capsules of mosses.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective botany Having the lid removed; said of the capsules of mosses.