仙人掌科中的白毛类,最具特色和最负盛名的有翁柱属、老乐柱属、刺翁柱属、乳突球属等中的翁柱、白貂、白云锦、圣云锦、武烈柱、银毛松霞(见彩页)等。它们的原产地大致可分为三大板块,一为北美洲墨西哥干旱少雨的西北部高原地区,二为南美洲南纬15～38℃安第斯山系1000～2000米的西坡地区,三为安第斯山系3000～4000米的东坡地区,包括墨西哥、秘鲁、玻利维亚、智利和阿根廷5个国家。这一广大地区西濒太平洋,所有植 White cactus in the cactaceae, the most unique and most prestigious Wengzhu genus, old genus Leptospira, thorn Wengzhu genus mastoid genus Wengzhu, white marten, Baiyun Jin, Sheng Yunjin, Wu Lie column, silver Mao Song Xia (see color pages) and so on. Their origin can be broadly divided into three major plates, one is the arid northwest plateau in North America and Mexico, the second is the western slope of 1000-2000 m in the Andes Mountains of South America at 15-38 ℃, the third is the Andes Dongpo, 3,000 to 4,000 meters, includes five countries: Mexico, Peru, Bolivia, Chile and Argentina. This vast area west of the Pacific Ocean, all planted