Papilionaceous: butterfly-like.
Papilla: a minute, soft projection: specifically the modified ligula in silk spinning caterpillars.
Papillary: with nipple-like processes that have the tips rounded.
Papillate -us: a surface with small elevations which are porous at tip.
Papilliform: like a wart or pimple.
Papillose -us: pimply; a surface covered with raised dots or pimples.
Pappose: downy: made up or clothed with pappus.
Pappas: a fine down.
Para-: next to; near by; at the side of.
Parabiosis: see symbiosis.