VASCULAR ANATOMY OF ORCHID FLOWERSPublished in Botanical Museum Leaflets, Harvard University, in 1948, in volume 13, pages 61-95NOTES ON ORCHIDS OF THE AMERICAN TROPICSPublished in Botanical Museum Leaflets, Harvard University, in 1948, in volume 13, pages 133-152
NOTES ON ORCHIDS OF THE AMERICAN TROPICSPublished in Botanical Museum Leaflets, Harvard University, in 1948, in volume 13, pages 133-152