Species within a genus

drupa, druppa,= an overripe, wrinkled olive;
-aceus, = indicates resemblance.
drupaceus, = drupe-like
(Alien and naturalised)
(ld, BL, Cw)

gibbus, = hunched, humped, gibbous; a hunch, hump; a hump-like swelling, protuberance;
-osus, = indicates abundance or full or marked development.
(ld, BL)

Sēres, = a people of Eastern Asia, (the modern Chinese), celebrated for their silken fabrics;
-eus, =indicates material or colour or resemblance in quality.
Sericus, = of or belonging to the Seres, Seric; silken.
(sericious, i.e. silky with long straight close-pressed glossy hairs)
(ld, BL)