Dendrobium hellwigianum Kraenzl., habit, photo Roy. Bot. Gard. Edin., based on Edinburgh cult. 682447 (Woods 2925)
Dendrobium hellwigianum Kraenzl., habit, photo T.M. Reeve, based on PNGH 44A
Dendrobium hellwigianum Kraenzl., flowers, photo T. Roelfsema
Dendrobium hellwigianum Kraenzl., flower, photo Roy. Bot. Gard. Edin., based on Edinburgh cult. 821018 (Reeve 629)
Dendrobium hellwigianum Kraenzl., drawing by M. Bates in Notes Roy. Bot. Gard. Edinburgh 46 (1989) 241, fig. 25