Mexico: Edo. Tamaulipas. Vicinity of "Barbara's Patch", a former sawmill site, 3 km. W of Rancho del Cielo Biological Station, 7 km. NW of Gómez Farias, Mun. Gómez Farias. alt. 1250-1600 m. Bosque caducifolio. Temperate deciduous forest of Ostrya virginiana, Liquidambar macrophylla, etc., on limestone karst.