Diversidad de Orchidaceae en un área de la Sierra Madre Oriental en Tamaulipas, México

What is it about?

The Sierra Madre Oriental hosts a high floristic diversity, but its northernmost portion remains poorly explored. There is a lack of studies documenting the richness of Orchidaceae in this region. Our aim was to contribute to the knowledge of orchid diversity in the north of the Sierra Madre Oriental in Tamaulipas.

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Why is it important?

35 species were recorded, with 29 in Conrado Castillo and 18 in Los San Pedros; 12 taxa were present in both localities. Bletia jucunda, Corallorhiza striata, Corallorhiza wisteriana, Deiregyne densiflora, Goodyera brachyceras, Goodyera oblongifolia, Malaxis abieticola, Malaxis brachyrrhyncha, Schiedeella transversalis, Sotoa confusa, and Tamayorkis hintonii are new records for the flora of Tamaulipas. Eighty-six percent of the recorded species are terrestrial, with the Pinus-Quercus forest showing the highest orchid richness (80%). The most represented floristic affinity was the southern (82% of genera), followed by Asian (14%) and boreal (4%) affinities. The orchid flora of the studied area is similar to that found in localities of Nuevo León and Texas.

Perspectives