Style with a pentagonal stigma which bears in each angle a glandular body.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
Rich vegetation amidst vast masses of basalt, either continuous or isolated, either rugged or grooved with pentagonal columns; sometimes also rent into deep dark ravines, between vertical cliffs of which the eye just catches a glance while being hurried past in the train.
"The South of France--East Half"
Charles Bertram Black
If we take an orange, and conceive it to be divested of its natural colour without acquiring any new one; to lose its softness without becoming hard, its roundness without becoming square or pentagonal, or of any other regular or irregular figure whatever; to be deprived of size, of weight, of taste, of smell; to lose all its mechanical and all its chemical properties, and acquire no new ones; to become, in short, invisible, intangible, imperceptible not only by all our senses, but by the senses of all other sentient beings, real or possible; nothing, say these thinkers, would remain.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill