Rhynchostylis coelestis (Rchb. f.) Rchb. f. ex Veitch 1891

Photo by Lourens Grobler ©

Inflorescence

Photo courtesy of Oak Hill Gardens

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Common Name The Sky-Blue Rhynchostylis - In Thailand - Ueang khao kae

Flower Size 3/4" [2 cm]

Found in Thailand, Cambodia and Vietnam in semi-deciduous and deciduous dry lowland forests and savana-like woodlands at elevations of sealevel to 700 meters as a small sized, cool to hot growing monopodial epiphyte with a stem carrying several, strap-like, fleshy, alternate leaves that blooms on an axillary, erect to arcuate, densely many flowered, racemose inflorescence with waxy, fragrant citrus scented flowers occuring in the summer and fall.

Synonyms *Saccolabium coeleste Rchb. f. 1885; Vanda pseudo-coerulescens Guillaumin 1830

References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915; Atlas des Orchidees Cultivees Constantin 1920 drawing fide; Orchid Digest Vol 23 #4 1959 photo fide; AOS Bulletin Vol 32 #1 1963; The Orchids of Thailand Seidenfaden & Smitinand 1963 drawing/photo fide; Encyclopedia of Cultivated Orchids Hawkes 1965 drawing fide; Beautiful Thai Orchid Species Kamemoto & Sagarik 1975 photo fide; Rudolf Schlechter Die Orchideen Band 1B lieferung 19/20 1129 - 1264 Brieger 1988 as V pseudocoerulescens; Rudolf Schlechter Die Orchideen Band 1B lieferung 19/20 1129 - 1264 Brieger 1988; Opera Botanica #95 Seidenfaden 1988 drawing/photo fide; Thai Orchid Species Rakpaibulsombat 1992 photo fide; AOS Bulletin Vol 63 No 2 1994 photo fide; Identification of the Orchids [Orchidaceae Juss.] Vietnam Averyanov 1994; AOS Bulletin Vol 64 No 2 1995 photo fide; AOS Bulletin Vol 66 No 7 1997 photo fide; A to Z of South East Asian Orchid Species Vol 1 O'Byrne 2001 photo fide; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 photo fide; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo fide; AOS Bulletin vol 78 No 5 2009 photo fide; AOS Bulletin Vol 80 #7 2011 photo fide; AOS Bulletin Vol 83 # 7 2014 photo fide; Genera Orchidacearum Vol 6 Epidendroideaea Pt 3 Pridgeon, Cribb, Chase and Rasmussen 2014 drawing fide; AOS Bulletin Vol 84 #2 2015 drawing fide; AOS Bulletin Vol 84 #4 2015 photo fide; Orchid Digest Vol 80 #2 2016; AOS Bulletin Vol 86 #7 2017 photo fide; AOS Bulletin Vol 86 #8 2017 photo fide; AOS Bulletin Vol 86 #8 2017 as R coelestis var coerula photo fide; AOS Bulletin Vol 86 #9 2017 photo fide;

Rhynchostylis coelestis var alba

Photo courtesy of David Jubineau Copyright ©

A white color variety of the previous species.

References W3 Tropicos, Kew Monocot list , IPNI ; Beautiful Thai Orchid Species Kamemoto & Sagarik 1975 photo fide; Die Orchideen lieferung 19/20 Schlechter/Brieger 1988 drawing good; AOS Bulletin Vol 67 No 7 1998 photo fide;

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