This plant is native to Madagascar and has been described since 1964. A recent arrival for collectors.
Armandii was the first dimorphic ceropegia that I tried to grow. I had gotten a very nice plant from Bob Sparrow and brought it to my greenhouse where it promptly began to suffer. I took it out of the soil it was in and put it on a bed of leca stones in a small propagation tray and set it in a tray of water. It was very happy and began to grow. It finally sent out a thin knobby wire of a growing tip that flowered with green caged flowers that reminded me of old fashioned kerosene table lamps. I lost that original plant when we ran out of gas one cold night in January about two years ago.
At the beginning of this summer (99) I ordered some cuttings from Paul Shirley. I put them in my propagation box and they were very slow to root. One cutting is only now beginning to show top growth. This cutting was taken from the box when it showed 3 or four roots about a quarter inch long and was put into a 3" pot, in a loose mix of perlite and soil-less mix with added rough quartz grit and marble chips. It seems to be doing all right so far. I know now that this plant will need to be kept in temperatures over 60 degrees F. during the winter.