Assertion: moss's capsule | /r/HasProperty | mature
Facets:
Source sentences:
text: The calyptra usually falls off when the capsule is mature.
text: It is also worth noting that in liverworts in which the fully mature spore capsules are held on noticeable setae, the setae extend only once the spore capsules are mature.
text: The calyptra breaks off when the spore capsule is mature, exposing the encapsulated spores.