Dendrobium wattii Rchb. f. 1888 SECTION Formosae

Flower Closeup

Flower Side View

Photos by © André Schuiteman, Jaap Vermeulen and Dr. E.F. de Vogel and Their Netherlands National Herbarium Website

Dendrobium congianum Vietnam

Photos by Averyanov © and Taiwania 61(4):319-354 November 2016, New Species of Orchids (Orchidaceae) in the Flora of Vietnam Averyanov, Nong, Nguyen and Truong


Common Name Watt's Dendrobium [English Botanist and Orchid Collector in India Late 1800's] - In China Gao Shan Shi Hu

Flower Size 2" [5 cm]

Found in southern Yunnan province of China, Myanmar, northern Thailand, northwest India, northern Laos and Vietnam in dense forests on tree trunks at elevations of 1500 to 2600 meters as a miniature to medium sized, cool to cold growing epiphyte with slender, cylindrical canes carrying 4 to 8, narrowly linear, leathery leaves with the leaf sheaths having fine black hairs that blooms in the spring on a short inflorescence arising near the apex of leafless canes with 2 to 3 flowers.

This species has been misidentified as and is similar to D infundibulum from Myanmar.

It may be close to Dendrobium vocongii Schettler et D.M. Pham (Schettler and Minh, 2016) closely allied to D. wattii, from which differs in smaller, almost pure white flowers and entire acute (not emarginate) epichile. It is highly probable that D. vocongii is natural hybrid, which exhibits visible intermediate vegetative and floral morphology between D. wattii and our new species and obviously originated by means their natural hybridization.

Synonyms Callista wattii (Hook.f.) Kuntze 1891; Dendrobium cariniferum var wattii Hkr.f; Dendrobium congianum Aver.2016; Dendrobium evrardii Gagnep. 1930

References W3 Tropicos, Kew Monocot list , IPNI ; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910; Die Orchideen Schlechter 1915; Die Orchideen 2 Auflage Schlechter 1927; The Orchids of Thailand Seidenfaden & Smitinand 1960; Encyclopedia of Cultivated Orchids Hawkes 1965; Beautiful Indian Orchids and How to grow them Ghose 1968 as D williamson var wattii; Opera Botanica #83 Orchid Genera in Thailand XII Dendrobium Sw. Seidenfaden 1985 drawingfide; Identification of the Orchids [Orchidaceae Juss.] Vietnam Averyanov 1994; Orchid Species Culture; Dendrobium Bakers 1996; Orchid Genera of Thailand, Laos, Cambodia and Vietnam Schuiteman & De vogel 2000 photo fide; The Dendrobiums H. P. Wood 2006 as D evrardii photo fide; The Dendrobiums H. P. Wood 2006 photo ok?; Orchids of India A Glimpse Misra 2007; Flora of China Vol 25 Zhengyi, Raven & Deyuan 2009; The Wild Orchids in Yunnan Xu Xiang Ye & Liu 2010 photos fide; Taiwania 61(4):319-354 November 2016, New Species of Orchids (Orchidaceae) in the Flora of Vietnam Averyanov, Nong, Nguyen and Truong 2016 as D congianum photo fide; Atlas of Native Orchids of China Vol 1 Jin Xiaohua, Li Jianwu and Ye Deping 2019 photo fide;