1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
2 specimens
Riccardia trukensisHolotype
BISH 508556 · Whittier, H.O., 1960
Etten, Micronesia
Riccardia graeffeiHolotype
BISH 508558 · Whittier, H.O.; Miller, H.A., 1960
Sorol, Micronesia
