e-Flora of Thailand

Volume 12 > Part 2 > Year 2014 > Page 478 > Orchidaceae > Dendrochilum

4. Dendrochilum simile Blumewfo-0000941419

Bijdr.: 400. 1825; Seidenf. & J.J.Wood, Orchids Penins. Malays. Singap.: 185, fig. 79e–f. 1992; J.B.Comber, Orchids Sumatra: 397 (incl. colour photo). 2001; H.A.Pedersen & Watthana, Thai J. Bot. 5: 57, fig. 1(C, F). 2013.— Platyclinis similis (Blume) Benth. ex Ridl., J. Linn. Soc., Bot. 31: 266. 1896.— Acoridium simile (Blume) Rolfe, Orchid Rev. 12: 220. 1904. Plate XXXIX: 4.


Accepted Name : This is currently accepted.



Synonyms & Citations :

Platyclinis linearis Ridl., J. Linn. Soc., Bot. 32: 230. 1896.— Acoridium lineare (Ridl.) Rolfe, Orchid Rev. 12: 220. 1904.— Dendrochilum lineare (Ridl.) Pfitzer in Engler, Pflanzenreich IV 50 II B 7: 93, 162, fig. 33(F–G). 1907.


Description : Pseudobulbs clustered on a condensed rhizome, oblongoid-fusiform to slenderly fusiform, 3.1–5.5 cm long, 0.4–1.6 cm in diameter. Leaves petiolate; petiole 4.5–7.5 cm long; lamina linear-lanceolate, acute to obtuse, 19.7–28.5 by 1.9–2.6 cm. Inflorescence synanthous; peduncle 24.5–26 cm long; rachis 12–15.8 cm long, with 1 non-floriferous bract at base; floral bracts ovate-oblong, acute to acuminate, sometimes mucronate, 3.2–4.8 mm long, 3- to 7-veined from the base. Flowers bright green to whitish. Sepals 3-veined from the base; dorsal sepal linear to linear-lanceolate, acuminate, sometimes mucronate, 6.8–7.7 by 1.4–1.6 mm; lateral sepals linear-lanceolate, slightly oblique, acute, apically keeled and mucronate, 6.3–7.4 by 1.5–1.8 mm. Petals linear, obtuse to acute, 5.9–7.1 by 1.3–1.5 mm, subentire, 3-veined from the base. Labellum linear to slightly fiddle-shaped with erose margins in its proximal half, rounded, the distal half coiled-up like a butterfly’s proboscis, 5.3–6.5 by 1.5–1.6 mm, minutely rugose papillose, ornamented by 2 keels extending from the base to about half-way to the apex of labellum (and sometimes with a shorter and lower median keel). Column 2.7–2.8 mm long, with a 3- to 4-dentate apical wing; stelids subbasal, obliquely linear, rounded to obtuse, reaching the level of the apical column wing; anther acute to acuminate in front.


Thailand : PENINSULAR: Yala (Betong).


Distribution : Peninsular Malaysia, Sumatra, Java (type), the Lesser Sunda Islands.


Ecology : In tropical rain forests and hill evergreen forests; 300–1,000 m alt. Flowering: April–May.


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Plate XXXIX: 4
Dendrochilum simile Blume