They are about about knee-high in this photo. They are hard to find because they grow in drier areas of the forest floor, not in meadows. Since they are saprophytic, they only need a juicy root to flower. The plant is stems and flowers. No need for leaves or photosynthesis.
There are other plants here with a similar strategy. One is called called "Snow plant". Sarcodes sanguinea.
The other is Called "Pine Drops". Pterospora andromedea
