Published in Konglike Vetenskaps Academiens nya Handlingar, vol. 21: 251. 1800.

        Cypripedium guttatum is the most widespread slipper orchid worldwide. It can be found from Eastern Europe over Northern Asia to Japan and northernmost North America. In China it occurs in a broad band from south-central Tibet to northeast Heilongjiang. In Southwest China it is a relatively common species. However, it is rare in Huanglong, and so far only one small population has been discovered in the Huanglong valley. It grows here in open shrub at an altitude of about 3100 m. It is likely that more populations exist in Huanglong because in areas close to the park, such as Wanglang, the species occurs in several populations. Cyp. guttatum has a long creeping rhizome, two leaves per growth, a single flower with a diameter of 2-3 cm, and is 15-25 cm tall.

        Flowering: June.

        紫点杓兰是世界上分布最为广泛的一种拖鞋兰，从西欧、亚洲北部、日本一直分布到美国北部。紫点杓兰在中国分布范围也相当广，从西藏的中南部到黑龙江东北部均有分布，是西南地区一个普遍分布的物种。但在四川黄龙紫点杓兰的分布相对来说还是比较少的。在黄龙沟仅有一个很小的居群，主要生长在开旷的灌木丛中， 海拔约为3100米。紫点杓兰在黄龙的分布可能今后还会被发现， 特别是在靠近王朗国家公园的地区，因为在王朗国家公园紫点杓兰有好几个居群分布。紫点杓兰具有细长的匍匐根状茎，每个植株着生两枚叶片，植株高度通常为15-25厘米，花序顶生，单朵花，花直径一般在2-3厘米之间。