Dendrobium hainanense Rolfe 1896 SECTION Aporum SUBSECTION Strongyle
Photo by Holger Perner
Photos by The Orchid Society Of China Website
to 
EARLIER 
Common Name The Hainan Dendrobium [Chinese Island] - in China Hai Nan Shi Hu
Flower Size .2" [5 mm]
Found in China on the island of Hainan in the south in broad leaved forests at elevations of 300 to 1700 meters as a miniature to small sized, hot to cool growing epiphyte with rigid, ascending, cylindric, compressed, slightly falcate, not branched, many noded, leafy throughout canes bearing many subcylindric, almost subulate, slender, thickly fleshy, obtuse apically leaves and blooms in the earlier fall on a short, single flowered inflorescence that arises from near the apex of the cane and carrying honey scented flowers.
CAUTION I am reasonably sure that this is correct and that most literature says it is a synonym of D parciflorum but it is certainly different than the description for that species.
Synonyms Aporum hainanense (Rolfe) Rauschert 1983
References denparciflorum.htm Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910; Orchid Digest Vol 55 #3 1991 photo not; Identification of the Orchids [Orchidaceae Juss.] Vietnam Averyanov 1994; Orchid Species Culture; Dendrobium Bakers 1996; Hainan Island Wild Orchid illustrations 2005 photo fide; Flora of China Vol 25 Zhengyi, Raven & Deyuan 2009; Orchid Digest Vol 74 #4 2010 photo fide; Orchid Digest Vol 80 #2 2016; Atlas of Native Orchids of China Vol 1 Jin Xiaohua, Li Jianwu and Ye Deping 2019 photo fide;
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