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Published in Zeitschrift für Säugetierkunde, in 1983, in volume 49, pages 182-189

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Published in Sida, Contributions To Botany, in 1974, in volume 5, issue 4, pages 297-300

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Published in Banisteria, in 2000, in volume 16, pages 51-54

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Published in Madroño, in 1939, in volume 5, issue 2, pages 77

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Published in Proceedings of the United States National Museum, in 1903, in volume 26, issue 1336, pages 887-888

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Published in Rhodora, in 1968, in volume 70, issue 782, pages 289-292

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