Dendrobium secundum [Bl.] Lindl. 1828 SECTION Pedilonum J.J.Sm Photo courtesy of Eric Hunt, plant grown by Eddon Orchids

Floral Closeup

Plant in situ in Thailand Photos courtesy of David Kuehn

FragrancePart sunCoolTo HotLATESpringand Summer

Common Name Refers to the flowers all facing one direction - in Indonesia - Anggerek sikat gigi or toothbrush orchid - In Thailand - ueang praeng sifan - Khaw ngu hao - Ueang ngawn kai

Flower Size to 1/2" [to 1.25 cm]

This semi-pendulous, medium to large sized, hot to warm growing, cane-like species is found in Myanmar, Thailand, Vietnam, Cambodia, Laos, penninsular Malaysia, Java, Sumatra, Borneo, New Guinea and the Philippines in semi-deciduous and deciduous dry lowland forests and savana-like hill woodlands at elevations of sealevel to 700 meters with erect or semipendulous, stout, tapering at both ends, sulcate stems with oblong to oblong-lanceolate, persistent, unequally bilobed apically leaves that bloom in the late summer through late spring on last years mature pseudobulb with the 5" [12.5 cm] long inflorescence arising from near the apex of the leafless canes with many [50], waxy, glossy, fragrant flowers that do not open well.

This orchid should be mounted to accomodate the often pendulous growth habit but if a pot is used it should be as small as possible and it should be allowed to dry out between waterings and fertilizer lessened through the winter months resuming only after the initiation of new growth in the spring.

Synonyms Callista bursigera [Lindley]O. Ktze 1891; Callista secunda [Bl.] O. Ktze 1891; Dendrobium bursigerum Lindley 1859; Dendrobium heterostigma Rchb.f 1859; Dendrobium secundum f. album Valmayor; Dendrobium secundum [Bl.]Lindl. var bursigerum Ridley; Dendrobium secundum var. niveum Rchb.f. 1882; Pedilonum bursigerum (Lindl.) Rauschert 1983; *Pedilonum secundum Bl. 1825

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1857; Orchids of Burma Grant 1895/1995; Die Orchideen Von Java J.J.Sm. 1905; Die Orchideen Von Java J.J.Sm. 1905 as D heterostigma; Die Orchideen Von Java Figuren Atlas J.J.Smith 1908 drawing ok; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910 as D bursigerum drawing good; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910; Orchidaceae Monandre-Dendrobiinae Fr. Kraenzlin 1910 as D heterostigma; Die Orchideen Schlechter 1915; Flora of Malaya Vol 1 Orchids Holttum 1953 drawing fide; The Orchids of Thailand Seidenfaden & Smitinand 1959; Encyclopedia of Cultivated Orchids Hawkes 1965; Beautiful Thai Orchid Species Kamemoto & Sagarik 1975 photo fide; Indian Orchids: A guide to Identification and Culture Vol II Pradhan 1979 photo fide; Orchid Digest Vol 45 No 2 1981 photo fide; Die Orchideen lieferung 11 Schlechter/Brieger 1981 as Pedilonum secundum photo fide; AOS Bulletin Vol 53 No 9 1984 photo; Orchidiana Philipiniana Vol 1 Valmayor 1984; Orchidiana Philippiana Vol 1 Valmayor 1984 as D secundum f album; AOS Bulletin Vol 55 No 8 1986 photo; Orchids of Java Comber 1990 photo fide; The Orchids of Penninsular Malaysia Wood & Seidenfaden 1992 drawing/photo fide; Thai Orchid Species Rakpaibulsombay 1992 photo fide; The Illustrated Encyclopedia of Orchids Pridgeon 1992 photo fide; The Plants of Mount Kinabalu Vol 2 Orchids Wood Beaman & Beaman 1993 photo fide; A Checklist of the Orchids of Borneo Wood & Cribb 1994; Manual of Orchids Stewart 1995 drawing fide; Orchid Species Culture Bakers 1996; Oasis Vol 1 No 3 2000 photo; Dendrobium and its Relatives Lavarack, Harris and Stocker 2000 photo fide; AOS Bulletin Vol 70 No 6 2001 photo; A Field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2001 photo fide; Orchids of Sumatra Comber 2001 photo fide; The Orchids of the Philippines Cootes 2001 photo fide; Orchids of Sarawak Beeman & Wood 2001 photo fide; A to Z of South East Asian Orchid Species Vol 1 O'Byrne 2001 photo fide; Lindleyana Vol 17 No 1 2002; Botanica's Orchids 2002 photo fide; Flora Malesiana Orchids of the Philippines Vol I Agoo, Shuiteman and de Vogel 2003; Flora Malesiana Orchids of New Guinea Vol II Shuiteman and de Vogel 2003; Slipper Orchids of Vietnam Averyanov, Cribb, Loc and Hiep 2003 photo fide; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo fide; The Dendrobiums H. P. Wood 2006 photo fide; The Dendrobiums H. P. Wood 2006 as D bursigerum photo good; Wild Orchids in Myanamar Vol 3 Tanaka 2007 photo fide; The Orchids of India A Glimpse Misra 2007 drawing ok; AOS Bulletin Vol 77 No 9 2008 photo; Philippine Native Orchid Species Cootes 2009 as D bursigerum photo fide; The Orchids of Mount Kinabalu Vol 2 Wood, Beaman, Lamb, Chu Lun and Beaman 2011 photo fide; Wild Orchids of Penninsular Malaysia Ong, O'Byrne, Yong & Saw 2011 photo fide; A Guide tothe Dendrobium of Borneo J J Wood 2013 photo fide; Dendrobium of Borneo Wood 2014 photo/drawing fide; Wild Orchids of Myanmar Hyan Tun [Mr Myanmar] 2014 Photo fide ;

Dendrobium secundum f Alba Valmayor & Tiu 1984 Photo courtesy of Eric Hunt, plant grown by Eddon Orchids

Differs form the norm in the white flowers

References W3 Tropicos, Kew Monocot list , IPNI ; Orchidiana Philipiniana Vol 1 Valmayor 1984; Thai Orchid Species Rakpaibulsombat 1992 photo fide; Wild Orchids of Myanmar Hyan Tun [Mr Myanmar] 2014 Photo fide ;

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