
gallery of species of sect. Pedilonum s.l. showing morphological transformation series in the lip apices (shape, margin ornamentation, incurvation, pleating, etc.), with former sectional attribution indicated

Dendrobium brevicaule Rolfe subsp. pentagonum (Kraenzl.) T.M.Reeve & P.Woods, habit, photo T.M. Reeve, based on Reeve 457

Dendrobium sp. sect. Pedilonum, inflorescence, photo Roy. Bot. Gard. Edin., based on Edinburgh cult. 701768

Dendrobium sp. sect. Pedilonum, habit, photo N.E.G. Cruttwell, based on Cruttwell (7/87, PNG, Anura)

Dendrobium chrysopterum Schuit. & de Vogel, inflorescences, photo J. Meijvogel, based on Leiden cult. 31894

Dendrobium masarangense Schltr. subsp. theionanthum (Schltr.) T.M.Reeve & P.Woods var. theionanthum, habit, photo Roy. Bot. Gard. Edinburgh/A.C. Jermy

Dendrobium obtusum Schltr., flowers, photo J.B. Comber, based on Cibodas Botanical Garden cult. (ex Papua)

Dendrobium sp. sect. Pedilonum, flowers, lateral view, photo D. Titmuss, based on D. Banks cult., ex PNG

Dendrobium aff. rarum Schltr., flower, photo D. Titmuss, based on P. Spence cult., Waria District, PNG

Dendrobium pseudoglomeratum T.M.Reeve & J.J.Wood, photo A. de Wilde, cultivated at Highland Orchid Collection, Laiagam, PNG

Dendrobium subclausum Rolfe, inflorescences, photo D. Titmuss, based on P. Spence cult., ex Myola, PNG

Dendrobium trichostomum Rchb.f. ex Oliv., inflorescence, photo D. Titmuss, based on P. Spence cult., ex PNG

Dendrobium vannouhuysii J.J.Sm., photo A. de Wilde, cultivated Highland Orchid Collection, Laiagam, PNG

Dendrobium vexillarius J.J.Sm. var. uncinatum (Schltr.) T.M.Reeve & P.Woods (left) & var. albiviride (P.Royen) T.M.Reeve & P.Woods (right), habit, photo Roy. Bot. Gard. Edin., based on Edinburgh cult. 682410 (var. uncinatum), 682067 (var. albiviride)

Diagram of generalized Pedilonum flower, from Reeve & Woods, 1989, Notes Roy. Bot. Gard. Edinburgh 46: 169, fig. 1