淡雪丸（學名：Mammillaria albicoma）是墨西哥的特有種仙人掌，主要分佈在墨西哥新萊昂州、聖路易斯波托西州、塔毛利帕斯州，棲地為熱帶沙漠，現正面臨棲地破壞及非法採摘的威脅。
參考文獻
- Hernández, H.M., Gómez-Hinostrosa, C. & Goettsch, B. 2002. Mammillaria albicoma （頁面存檔備份，存於互聯網檔案館）. 2006 IUCN Red List of Threatened Species. （頁面存檔備份，存於互聯網檔案館） Downloaded on 22 August 2007.
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