Assertion: cupule's ovule | /r/HasAspect | apical part of the nucellus
Facets:
Source sentences:
text: These earliest ovules had the apical part of the nucellus exposed, from which there was a projection known as a lagenostome (sometimes also called a salpinx) that facilitated capture of the pollen and directed it down to the pollen chamber above the megagametophyte.