“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
L. Brent Vaughan Hill's Practical Reference Library of General Knowledge (New York, NY: Dixon, Hanson & Company, 1906)
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