Peruvian old men (Espostoa lanata)

If it's Espostoa lanata, all the following names are considered synonyms:

 

Cleistocactus lanatus

Espostoa sericata

Espostoa lanata var. sericata

Cereus sericatus

Espostoa procera

Espostoa laticornua

Cereus dautwitzii

Pilocereus dautwitzii,

Cereus lanatus,

Cereus lanatus ssp. sericatus

Pilocereus lanatus

Oreocereus lanatus

Cactus lanatus

Espostoa dautwitzii

 

Done