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NOTES ON EPIDENDRUM
Published in Botanical Museum Leaflets, Harvard University, in 1937, in volume 4, pages 127-128
ORCHID STUDIES, II
Published in Botanical Museum Leaflets, Harvard University, in 1937, in volume 5, pages 41-48
ORCHID STUDIES, III
Published in Botanical Museum Leaflets, Harvard University, in 1937, in volume 5, pages 49-60
ORCHID STUDIES. I
Published in Botanical Museum Leaflets, Harvard University, in 1937, in volume 5, issue 4, pages 31-32