Thursday, July 14, 2016

[Botany • 2010] Dendrobium roseiodorum • A New Species (Orchidaceae) from Vietnam


Dendrobium roseiodorum A.Sathapattayanon, T.Yukawa & T.Seelanan    c, Dendrobium kontumense Gagnep.;  g, Dendrobium ochraceum de Wild.

Abstract 

In the course of revisionary work of Dendrobium section Formosae, we found some misinterpretations of Dendrobium kontumense. Dendrobium schildhaueri is placed as a synonym of D. kontumense and Dendrobium roseiodoruma new species from Vietnam, is described. 

Key words: Dendrobium roseiodorum, new species, Orchidaceae, Vietnam



 Dendrobium roseiodorum A.Sathapattayanon, T.Yukawa & T.Seelanan, sp. nov.— Fig. 1, 2a, b

Dendrobium ochraceum de Wild. affine, sed petalis ellipticis-rhombicis, labello aureo-aurantiaco, et disco labelli verrucoso diversum. — Typus: Hort. Tsukuba Botanical Garden accession number 118269 (holo TNS; iso BCU), Vietnam, sine loc., 15 September 2008.
Dendrobium kontumense auct. non. Gagnep.; Schildhauer (2002) 369; Vestweber (2004) 38; Yukawa (2004) 23, f. 3–4.

Distribution — Vietnam (Khanh Hoa Province and Lâm Dong Province).

Habitat & Ecology — Recorded on boulders or tree branches; 1000–1200 m altitude. Flowering: September to November (in natural habitat), July to December (in cultivation).

Etymology — The specific epithet refers to the rose-like floral scent of the new species.

Fig. 2 a, b. Dendrobium roseiodorum A. Sathapattayanon, T. Yukawa & T. Seelanan (holotype). a. flowers; b. lip, note the verrucose calli on the disc. 
c, dDendrobium kontumense Gagnep. c. flower; d. lip.
g, hDendrobium ochraceum de Wild. g. flower; h. lip, note the obliquely elliptic side lobes of the lip and the verrucose calli on the veins
 (a, b: Hort. Tsukuba Botanical Garden accession number 144309; c, d: A. Sathapattayanon 408; e, f: Poilane 18280; g, h: Hort. Tsukuba Botanical Garden accession number 122822).

A. Sathapattayanon, T. Yukawa andT. Seelanan. 2016. Dendrobium roseiodorum (Orchidaceae): A New Species from Vietnam.
 Blumea. 55; 75–79. DOI:  10.3767/000651910X499240

   

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