1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
3 specimens
Phyllactinia alnicola
BISH 605709 · Southworth; Fairchild, 1918
Arlington
BISH 605720 · Southworth; Galloway, 1918
Anacostia
Podosphaera clandestina
BISH 606541 · Southworth, 1918
Forestville
