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Torr., Torr.,, and Torr., ?Ann. Lyceum Nat. Hist. New York 2: 227. 1828.?, 1828.

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Torr. and Torrey, ?Rep. U.S. Mex. Bound., Bot. 153. 1859?, 1859.

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Torr., ?Pacific Railr. Rep. 4(pt. 5 [no. 4]) (Whipple). 127. 1857?, 1857.

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