This very large sized, pendulous, cane orchid with distichous, deciduous leaves, is a native to Malaysia, Laos, Vietnam, Philippines, Indonesia, and Papua and New Guinea in gallery layers of lower primary forests at elevations up to 1300 meters with terete, arching to pendulous, to 4' [120 cm] long, many noded stem with each node enveloped by a loose fiiting sheath and carrying oblong elliptic, acute, deciduous leaves. It is a warm to hot growing orchid that needs a distinct dry to blooms. 8 to 10 flowers which arise from the nodes all along the apice of the leafless cane and are held close in, it is quite scented and needs to be mounted on tree fern or a plaque of cork to accomodate the pendant canes. When the new growths appear it is time to water and fertilize this plant heavily as it will grow up to 3' long.
Synonyms: Callista anosma O. Ktze. 1891; Callista macrophylla (Lindl.) Kuntze 1891; Callista scortechinii O. Ktze. 1891; Dendrobium anosmum var. dearei (Rolfe) Ames & Quisumb. 1935; Dendrobium anosmum var. giganteum (Rchb.f) Valmayor & Tiu 1984; Dendrobium leucorhodum Schlechter 1879; Dendrobium macranthum Hooker or Miquel ?; Dendrobium macrophyllum Lindley not Ames or Richards ?; Dendrobium retusum Llanos 1859; Dendrobium scortechinii Hooker 1890; Dendrobium superbum Rchb.f 1864; Dendrobium superbum Rchb.f var anosmum Rchb.f ? ; Dendrobium superbum var. dearei Rolfe 1891; Dendrobium superbum var. huttonii Rchb.f. 1869.
(Source: Internet Orchid Species Photo Encyclopedia)
DENDROBIUM ANOSMUM LINDLEY VAR ALBA HORT. 1845