Hypertext Webster Gateway: "pappus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Pappus \Pap"pus\, n. [L., an old man or grandfather; hence, a
substance resembling gray hairs, Gr. ?.] (Bot.)
The hairy or feathery appendage of the achenes of thistles,
dandelions, and most other plants of the order
{Composit[ae]}; also, the scales, awns, or bristles which
represent the calyx in other plants of the same order.
From WordNet (r) 1.7 (wn)
pappus
n : calyx composed of scales or bristles or featherlike hairs in
plants of the Compositae such as thistles and dandelions
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