姥 - old woman

Sakhalin surf clam (Pseudocardium sachalinense)

Aspasma minima (species of clingfish)

double weeping rosebud cherry (Prunus pendula)

Inversidens brandti (species of freshwater mussel)

mountain witch; yamauba

mountain where old people were abandoned (according to legend)

basking shark (Cetorhinus maximus)

elderly woman

ubame oak (Quercus phillyraeoides)

(Japanese) Darby and Joan

uba lily (Cardiocrinum cordatum)

practice of abandoning old people, usu. women