1950
.
Flora of Panama: Part iv, Piperaceae to Monimiaceae
. Ed. Missouri Bot. Garden.
1967
.
Flora of Panama: Part vi, Oxalidaceae to Turneraceae
.
Woodson, RE, RJ Seibert.
1937
.
Contributions toward a Flora of Panama I: Collections in the provinces of Chiriquí, Coclé, & Panama during the summer of 1935
. 210 pp.
1938
.
Contributions toward a Flora of Panama II: Miscellaneous collections during 1936-1938
. 840 pp.
Woodson, RE; H Allen; RJ Seibert.
1939
.
Contributions toward a Flora of Panama III: Collections during the summer of 1938
. 324 pp.
1943
.
Flora of Panama: Part ii, Cycadaceae-Pontederiaceae
. Ed. Missouri Bot. Gardens. 576 pp.
1945
.
Flora of Panama: Part III, Juncaceae — Orchidaceae
. Ed. Missouri Bot. Gardens. 593 pp.
1948
.
Flora of Panama: Part v, Lauraceae to Leguminosae
. Ed. Missouri Bot. Gardens. 448 pp.
Woodson, RE, E Schlittler, JA Schneider, HW Youngken.
1957
.
Rauwolfia: botany, pharmacognosy, chemistry & pharmacology
1958
.
Flora of Panama: Part vii, Passifloraceae-Cornaceae
. Ed. Missouri Bot. Gardens. 366 pp.
1969
.
Flora of Panama: Part ix, Convolvulaceae to Compositae
.