Harvard University Herbaria & Libraries

Aceraceae
A: 01793747 Acer rubrum trilobum K. Koch USA: Texas Marshall: [no additional data] G. W. Letterman
Caesalpiniaceae
A: 01852768 Gleditsia aquatica Marshall USA: Arkansas [no additional data] G. W. Letterman
Caprifoliaceae
A: 02038461 Lonicera involucrata (Richardson) Banks ex Sprengel USA: Colorado Graymont G. W. Letterman
Cyperaceae
GH: 01930154 Froelichia gracilis (Hooker) Moquin-Tandon USA: Colorado Colorado Springs: [no additional data] G. W. Letterman
Orchidaceae
AMES: 02029139 Liparis loeselii (Linnaeus) Richard USA: Missouri [no additional data] G. W. Letterman
Platanaceae
A: 00648207 Platanus occidentalis Linnaeus USA: Massachusetts Boston: J. [Jamaica] Plain G. W. Letterman
Pucciniaceae
FH: 00981943 Puccinia atropuncta Peck & Clinton USA: Missouri [no additional data] G. W. Letterman
FH: 00981944 Puccinia atropuncta Peck & Clinton USA: Missouri [no additional data] G. W. Letterman
Rhamnaceae
A: 01788607 Berchemia scandens (Hill) K. Koch USA: Arkansas Little Rock: [no additional data] G. W. Letterman
Rosaceae
A: 00139449 Crataegus brachyacantha Sargent & Engelmann USA: Texas Longview G. W. Letterman
A: 00016806 Crataegus collina lettermanii (Sargent) Eggleston USA: Missouri Allenton: G. W. Letterman
A: 00016807 Crataegus collina lettermanii (Sargent) Eggleston USA: Missouri Allenton: Brown's Gully G. W. Letterman
A: 00016807 Crataegus lettermanii Sargent USA: Missouri Allenton: Brown's Gully G. W. Letterman
A: 00016806 Crataegus lettermanii Sargent USA: Missouri Allenton: G. W. Letterman
A: 01648247 Crataegus spathulata Michaux USA: Arkansas Hot Springs: [no additional data] G. W. Letterman
GH: 01650883 Crataegus viridis ovata (Sargent) E. J. Palmer USA: Arkansas [no additional data] G. W. Letterman
GH: 01569847 Potentilla plattensis Nuttall USA: Colorado East 4 Mile Creek G. W. Letterman