| What is a Barnacled Periscope cacti. I was given one but I know nothing about it except it is a very thin cactus. |
| I really wish I could help you identify your cactus but the terms barnacle and periscope turn up nothing in our database. You may have to take a photo or take the plant in to your cooperative extension office for positive identification - or to a botanical garden. I'm sure someone who works regularly with cacti will have a good idea of its true identity. |
