Assertion: angiosperm's pollen | /r/HasProperty | boat-shaped
Facets:
Source sentences:
text: Analysis of the taxonomic distribution of characters of living primitive angiosperms suggests that angiosperm pollen is primitively monosulcate, boat-shaped, large- to medium-sized, psilate or at best only weakly sculptured, noninterstitiate to interstitiate-granular, atectate, and without endexine.