Dendrobium atroviolaceum Rolfe 1890 SECTION Latouria Photo courtesy of Eric Hunt, plant grown by Orchid Mania.

Flower and Inflorescence Photo courtesy of Andy's Orchids, Copyright 2002 All rights reserved

to Mid to EARLY

Common Name The Black Blood-Red Dendrobium

Flower Size 2 1/2" [6 cm]

Found in New Guinea and some surrounding islands, at an elevation of 200-800 meters as a medium sized, hot to warm growing epiphyte on large tree trunks in rainforests and as such their conditions should be the same all year. This orchid has a clavately-fusiform, deeply sulcate, geenish when young, brownish with age stem carrying 2 to 4 apical, ovate-oblong, thick, coriaceous, obtusely obtuse apically, dark green above and paler below leaves.

Frequent waterings and fertilizer will insure blooming in mid-winter through early summer with a short to 8" [to 20 cm], axillary raceme arising from just below or at the apex of new or older canes which carries 8 to many fragrant, heavy textured, very long lasting, nodding flowers.

Plants should have a drier winter although never alowed to dry out completely, with less fertilizer until the new growths arise in the spring

Synonyms Dendrobium eustachyum Schlechter 1923; Dendrobium macgregorii F.Muell. & Kraenzl. 1894; Latourea atroviolacea [Rolfe] Breiger 1981; Latourorchis atroviolacea [Rolfe] Breiger 1981; Sayeria atroviolacea (Rolfe) Rauschert 1983;

References W3 Tropicos, Kew Monocot list , IPNI ; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910 as D macgregorii; The Orchidaceae Of German New Guinea Schlechter 1912/85 drawing fide; Die Orchideen Schlechter 1915 photo good; Die Orchideen 2 Auflage Schlechter 1927 photo fide; AOS Bulletin Vol 30 No 9 1961 photo fide; Encyclopedia of Cultivated Orchids Hawkes 1965; AOS Bulletin Vol 38 #7 1969 photo fide; The Orchids of Papua New Guinea An Introduction Millar 1978 photo fide; Miniature Orchids Northern 1980; Die Orchideen lieferung 11/12 633 - 752 Brieger 1981 as Latourea atroviolaceum photo fide; A Guide to Orchids of the World Hodgson, Paine & Anderson 1991 Photo good; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Laurent 1992 photo fide; The Illustrated Encyclopedia of Orchids Pridgeon 1992 photo fide; AOS Bulletin Vol 63 No 3 1994 photo; Manual of Orchids Stewart 1995; AOS Bulletin Vol 65 No 8 1996 photo fide; Orchid Species Culture, Dendrobium Bakers 1996; Orchid Species Culture, Dendrobium Bakers 1996 as D macgregorii; Orchids of Papua New Guinea Millar 1999 photo fide; Dendrobium and their Relatives Lavarack, Harris and Stocker 2000 photo fide; Flora Malesiana Orchids of New Guinea Vol II Shuiteman and de Vogel 2002; Botanica's Orchids 2002 photo fide; Flora's Orchids Nash & La Croix 2005 photo fide; The Dendrobiums H. P. Wood 2006 photo fide; Orchid Digest Vol 74 #1 2010 photo fide; Orchid Digest Vol 74 #4 2010 photo fide; A Guide to the Dendrobium of New Guinea Andre Schuiteman 2013 photo fide; Le Petit Larousse des Orchidees Lecoufle, Barthelemy & Schmidt 2013 photo fide;