Assertion: angiosperm's part | /r/CapableOf | whorled floral arrangement
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Source sentences:
text: Using the terminology of the time, he provided a list of many additional so-called ‘primitive’ features (today interpreted as ‘ancestral’): simple leaves are ancestral to compound leaves; reticulate venation is ancestral to parallel venation; laminar (leaf-like) stamens are ancestral to stamens with well-defined anther and filament; spirally arranged floral parts are ancestral to whorled floral arrangement; pollen with one aperture is ancestral to pollen with three apertures.