e-Flora of Thailand

Volume 12 > Part 3 > Year 2022 > Page 891 > Orchidaceae > Oberonia

25. Oberonia myriantha Lindl.wfo-0000252892

Fol. Orchid.: Oberonia p. 4. 1859; Hook.f., Fl. Brit. India 5: 679. 1888; Seidenf., Dansk Bot. Ark. 25(3): 56 p.p., fig. 34 p.p. (detail of Macleod s.n. only). 1968; Bunpha et al., Phytotaxa 420: 118, fig. 3D–E. 2019.— Malaxis myriantha (Lindl.) Rchb.f. in Walp., Ann. Bot. Syst. 6: 213. 1861.— Iridorkis myriantha (Lindl.) Kuntze, Revis. Gen. Pl. 2: 669. 1891.


Accepted Name : This is currently accepted.



Synonyms & Citations :

Oberonia sikkimensis Lindl., Fol. Orchid.: Oberonia p. 4. 1859.— Malaxis sikkimensis (Lindl.) Rchb.f. in Walp., Ann. Bot. Syst. 6: 212. 1861.
Oberonia acaulis auct. non Griff.: Seidenf., Dansk Bot. Ark. 33(1): 20 p.p., fig. 11 p.p. (detail of Macleod s.n. only). 1978; Deva & H. B. Naithani, Orchid Fl. North West Himalaya: 321, fig. 183. 1986; N.Pearce & P.J.Cribb, Fl. Bhutan 3(3): 222 p.p. 2002; S.C.Chen et al. in Z.Y.Wu et al. (eds.), Fl. China 25: 241. 2009; Raskoti, Orchids Nepal: 190 (incl. colour photos). 2009; Aver., Turczaninowia 16(1): 157 p.p., figs. 76h–I, 79h–j. 2013.


Description : Stems 3.5–6.8 cm long (to base of the free part of the inflorescence). Leaves articulate, bilaterally flattened, in lateral view obliquely to subfalcately (linear-)lanceolate, widest in the proximal part, acute; longest leaf 18–20 by 2–2.2 cm. Inflorescence lax to dense; free part of peduncle ca 2.8 cm long, bearing several bract-like scales; rachis 32–41 cm long, non-succulent, smooth (i.e., not pitted); floral bracts acuminate, glabrous, ca 3 mm long. Flowers of unrecorded colour, pedicelled, 1.8–2 mm wide. Sepals: dorsal sepal more or less spreading, elliptic-ovate to ovate, obtuse, ca 1 by 0.7 mm, entire; lateral sepals more or less spreading to slightly reflexed. Petals more or less widely spreading, ovate-oblong to oblong, obtuse, ca 1 by 0.6 mm, entire. Labellum from the base perpendicular to the column, slightly convex in the middle, 3-lobed, 1.3–1.5 mm wide across the side lobes, glabrous, without ornaments; side lobes spreading, obliquely subovate to suborbicular, entire to slightly and irregularly crenate; mid-lobe bilobulate (sinus 0.4–0.6 mm deep), 0.8–1 by 1–1.2 mm, entire; lobules obtuse to rounded. Column obovoid, front margins not developed into wings; rostellum acute. Ovary describing a more or less right angle to the rachis (when the flower is fully open and still fresh), glabrous.


Thailand : NORTHERN: Chiang Mai.


Distribution : Nepal, N & NE India (type), the eastern Himalayas, S China, Myanmar, Vietnam.


Ecology : Epiphytic in lower montane rain forests, ca 1,400 m alt. Flowering: recorded in November and April.


Vernacular : Ueang phaen bai mit (เอื้องแพนใบมีด).


Main