- D. hickeyi – main stem, proximally
- D. hickeyi – main stem, x-sect.
- D. hickeyi – lateral branch, x-sect.
- D. hickeyi – lateral branch, dorsal
- D. hickeyi – lateral branch, ventral
- D. hickeyi – growth constriction
- D. hickeyi – habit
- D. hickeyi – growth habit
- D. hickeyi – growth habit