The known region for Backbergia is from Nueva Italia up to the south, the highway that leads up to Infiernillo y Lazaro Cardenas in the mexican state of Michoacán. This place is well known by the huge amount of ceroids that are there, just in this place are living together three close relatives in the same place and flower more or less in the same season. Pachycereus pecten-aboriginum. Backebergia militaris and Pachycereus tepamo, even I know that the flowers are quite different, the spines and the shape of the plant is more or less the same in the first growing stages, just changing in spine colour.
A.A.
Copyright Arturo Anaya, no reproduction without permission of the author.
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