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1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
Pterobryon densum
BISH 475787
Delgadillo, M.C.; NULL, 1966
Mexico
Pterobryon densum
BISH 475788
Bishop, L.E.; NULL, 1967
Costa Rica
Pterobryon densum
BISH 475789
Sousa, M.; NULL, 1968
Mexico
Pterobryon densum
BISH 475790
Griffin III, D.; Lopez, M.; Ruiz-Teran, L., 1972
Venezuela
Pterobryon densum
BISH 475791
Griffin III, D.; Lopez, M.; Ruiz-Teran, L., 1972
Venezuela
Pterobryon densum
BISH 475792
Griffin III, D.; Vital, D.M., 1974
Brazil
