Dendrobium bullenianum Rchb.f 1862 SECTION Pedilonum
Photo by David Morris
Photo by Patricia Harding
to 
LATE
THROUGH
Common Name Bullen's Dendrobium [English Gardener with Low & Co. 1800's]
Flower Size 3/4" [1.9 cm]
This medium sized, hot to warm growing, epiphytic species is found in the Philippines in evergreen lowland forests at elevations up to 1000 meters with slender, slightly fractiflex, attenuate below, many noded, sulcate stems covered with sheaths and carrying submembraneous, ovate-oblong, obtuse leaves that are unequally bilobed apically and have clusters of orange flowers with red lines that arise on short to 2 1/2" [6.25 cm], densely flowered, almost globose inflorescence from all along the older dry canes.
It likes some direct sun in the morning and I treat it the same year round. It is normal for leaves to yellow up and fall off in the late summer just before it blooms.
Synonyms Callista intermedia (Teijsm. & Binn.) Kuntze 1891; Dendrobium chrysocephalum Kraenzl. 1892; Dendrobium erythroxanthum Rchb.f 1874; Dendrobium intermedium Teijsm. & Binn. 1853; Dendrobium topaziacum Ames 1915
References W3 Tropicos, Kew Monocot list , IPNI ; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910; Die Orchideen Schlechter 1915; Die Orchideen 2 Auflage Schlechter 1927; Encyclopedia of Cultivated Orchids Hawkes 1965; The Complete Writings on Philippine Orchids Vol 1 Quisumbing 1981 as D topaziiacum; Orchidiana Philipiniana Vol 1 Valmayor 1984 drawing fide; A Guide to Orchids of the World Hodgson, Paine & Anderson 1991 Photo fide; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Laurent 1992 photo fide; The Illustrated Encyclopedia of Orchids Pridgeon 1992 photo fide; Manual of Orchids Stewart 1995; Orchid Species Culture; Dendrobium Bakers 1996; Dendrobium and their Relatives Lavarack, Harris and Stocker 2000 photo fide; The Orchids of the Philippines Cootes 2001 photo fide; A to Z of South East Asian Orchid Species Vol 1 O'Byrne 2001 photo fide; Botanica's Orchids 2002 photo fide; Flora Malesiana Orchids of the Philippines Vol I Agoo, Shuiteman and de Vogel 2003; AOS Bulletin Vol 73 No 3 2004; Flora's Orchids Nash & La Croix 2005; The Dendrobiums H. P. Wood 2006 photo fide; AOS Bulletin Vol 78 #4 2009 photo fide; Philippine Native Orchid Species Cootes 2009 photo fide; Orchid Digest Vol 74 #4 2010 photo fide; Malesian Orchid Journal Vol 6 2010 photo fide; AOS Bulletin Vol 80 #10 2011 photo fide; Dendrobium of Borneo Wood 2014 photo fide; A Guide to the Dendrobium of the Philippines Cootes & Tiong 2015 photo fide; AOS Bulletin Vol 89 #11 2020 photo fide;
----------------------------------------------------------------------------------------------------------
