The eighteen Armanen runes were published by Guido von List in 1908 and are his own row, assembled from historical material rather than inherited whole.
The character behind it
Ka corresponds to the Younger Futhark character whose Old Norse name was kaun, meaning a sore or ulcer, which the Norwegian and Icelandic rune poems treat as an affliction. The Old English rune poem gives its equivalent the name cen, a torch, and describes a bright flame. Two traditions, two very different glosses, both attested.
What von List did with it
He kept the K value, named the character Ka, and assigned it a meaning from his own system. Where the historical record offered him a choice between an ulcer and a torch he took neither on its own terms, which is characteristic of how the whole row was built: the shapes and roughly the sounds are historical, the names are Germanised, and the meanings are his.
What the row claims to be
Von List presented the eighteen as a priestly alphabet recovered from an ancient Germanic past, with its count taken from the eighteen rune-charms of the Havamal. Runologists do not accept this, and describe the row as an esoteric construction of its own period.
Reception
The row was taken up in volkisch circles and by National Socialist organisations in the 1930s and 1940s. The atlas records that reception as part of the object's history.