You searched for: Collection University of Michigan Herbarium Catalog Collection Remove constraint Collection: University of Michigan Herbarium Catalog Collection Place Ankarana National Park; along the Maeva trail, on tsingy, on bare rock with only a little accumulation of soil. At the top of the hill where the trail levels off. Remove constraint Place: Ankarana National Park; along the Maeva trail, on tsingy, on bare rock with only a little accumulation of soil. At the top of the hill where the trail levels off.