It was first isolated around breeding galleries of scolytid beetles in the bark of Ulmus wallichiana.
The low height of the tree should ensure that it avoids colonization by the Scolytus bark beetles and thus remain free of Dutch elm disease.
Two specimens are known to survive, one in the USA and the other in the UK, the latter treated as a hedging plant to avoid the attentions of the Scolytus beetles that act as vectors of Dutch elm disease.
Only one living specimen is known, at Wakehurst Place, England, where it survives by being treated as a hedging plant, too low to attract the attentions of the Scolytus beetles that act as vectors of Dutch elm disease.
Owing to its diminutive height, the tree is unattractive to the Scolytus beetles which act as vectors of Dutch elm disease and therefore unlikely to become infected.
Only one specimen is known to survive, at the RBG Wakehurst Place, where it is cultivated as a hedging plant to keep it free from the attentions of the Scolytus beetles which act as vectors of Dutch elm disease.