conceptacle

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One of many specialized hollow chambers containing reproductive structures that appear as dark, dotlike bodies on the surface of receptacles in certain algae and fungi.

from The Century Dictionary.

• noun That in which anything is contained; a vessel; a receiver or receptacle.
• noun In botany: Originally, as used by Linnæus, a follicle—that is, a fruit formed of a single carpel dehiscing by the ventral suture.
• noun In lower cryptogams, an organ or a cavity which incloses reproductive bodies, usually spores, with or without special spore-cases: applied without reference to the origin of the spores, whether sexual or asexual.

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

• noun obsolete That in which anything is contained; a vessel; a receiver or receptacle.
• noun A pericarp, opening longitudinally on one side and having the seeds loose in it; a follicle; a double follicle or pair of follicles.
• noun One of the cases containing the spores, etc., of flowerless plants, especially of algae.

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

• noun obsolete A cavity, especially in the body.
• noun A cavity in some marine algae that contains the reproductive organs.