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"a.-- Truncated bulb of onion; b.-- onion leaf dissected off; c.-- bulb of lily. Bulb, a modified leaf-bud, formed on a plant upon or beneath the surface of the ground, emitting roots from its base, and producing a stem from its center." -Vaughan, 1906

Various Bulbs

"a.-- Truncated bulb of onion; b.-- onion leaf dissected off; c.-- bulb of lily. Bulb, a modified leaf-bud,…

This illustration shows a section of a tunicated bulb of the onion.

Onion

This illustration shows a section of a tunicated bulb of the onion.