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A medium-sized Agave from central eastern Mexico, where it grows on rocky outcrops in the states of Oaxaca, Puebla, San Luis Potosi, Tamaulipas and Veracruz. It forms a spreading, sometimes suckering rosette to about 1m (3 ft.) in diameter, consisting of broad, soft, light green leaves with small, reddish teeth along the margins. It will adapt to most warm temperate and some tropical climates. It appreciates regular watering and in hot areas looks best out of full midday sun. The name A. obscura has been misapplied in the past and many plants in cultivation as A. obscura are in fact A. horrida ssp. perotensis. The latter has dark green leaves with prominent, white thorns along the margins and is thus easy to distinguish from the real A. obscura.