 John Clough Thresh (1850–1932), who had isolated capsaicin in almost pure form,

Drupe

In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part (exocarp, or skin; and mesocarp, or flesh) surrounds a single shell (the pit, stone, or pyrene) of hardened endocarp with a seed (kernel) inside.These fruits usually develop from a single carpel, and mostly from flowers with superior ovaries (polypyrenous drupes are exceptions).The definitive characteristic of a drupe is that the hard, "lignified" stone (or pit, as in a peach) is derived from the ovary wall of the flower.