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THE GENUS PAPPERITZIA
Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 123-127
THE GENUS PONERA
Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 129-151
PLANTAE MEXICANAE X
Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 9, pages 165-198
TWO MEXICAN HABENARIAS
Published in Botanical Museum Leaflets, Harvard University, in 1941, in volume 10, pages 59-60