A white Maxillaria especies from the Quito Botanical Gardens

This large flowered Maxillaria has white flowers with a yellow lip.   The plant is growing at the side of the trail that is inside the orchid house.   It is a huge specimen several feet wide.  The flowers are quite showy but since the plant is planted at ground level you have to get on hands and knees to really appreciate their beauty.  Once you are level with the plant it becomes apparent that there are a number of flowers that are hidden among the leaves of the plant.  This orchid is among the most beautiful Maxillaria I have seen but the sheer size of the plant doesn’t recommend it much to greenhouse or windowsill growers.  Most of the flowers were pure white but there was a single one that had a red tint on the sepals.  It looked pretty much identical to the white ones except for the touch of color.