Species Information - Dimorphorchis breviscapa

Dimorphorchis breviscapa (J.J.Sm.) Kochyan & Schuit., Phytotaxa 161 (2014) 64

Type: Hewitt s,n. (Oct. 1908) Sarawak Quop. Holo B; iso K)

Synonyms:

• Arachnanthe breviscapa J.J.Sm., Bull. Dép. Agric. Indes Néerl. 22 (1909) 48
• Arachnis breviscapa (J.J.Sm.) J.J.Sm. -- Natuurk. Tijdschr. Ned.-Indië 72(1) (1912) 74.
• Arachnis breviscapa (J.J.Sm.) J.J.Sm., Natuurk. Tijdschr. Ned.-Indië 72 (1912) 74
• Vandopsis breviscapa (J.J.Sm.) Schltr., Repert. Spec. Nov. Regni Veg. 10 (1911) 195
• Stauropsis breviscapa (J.J.Sm.) Rolfe, Gard. Bull. Straits Settlem. 2 (1918) 46
• Vandopsis celebica Schltr., Repert. Spec. Nov. Regni Veg. 10 (1911) 195,
  - Type: Schlechter 20633 (holo B, lost)
• Arachnis celebica (Schltr.) J.J.Sm., Natuurk. Tijdschr. Ned.-Indië 72 (1912) 74
• Dimorphorchis celebica (Schltr.) Ormerod, Malesian Orchid J. 12 (2013) 35
• Vandopsis longicaulis Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 973
  - Type: Schlechter 18420 (holo B, lost; iso BO, E, K, L, MO, NSW)
• Arachnis longicaulis (Schltr.) L.O.Williams, Bot. Mus. Leafl. 5 (1937) 31
• Dimorphorchis longicaulis (Schltr.) Ormerod, Malesian Orchid J. 12 (2013) 35
• Arachnis longicaulis (Schltr.) L.O.Williams f. flavescens Valmayor & D.Tiu in H.L.Valmayor, Orchid. Philipp. A-V(3) (1983)16.
  - Type: Valmayor & Tiu 103 (holo CAHP)
• Arachnis lyonii Ames, Orchidaceae 5 (1915) 221
  - Type: Lyon 126 (holo AMES; iso AMES 2x)
• Dimorphorchis lyonii (Ames) Ormerod, Malesian Orchid J. 12 (2013) 37
• Dimorphorchis lyonii (Ames) Ormerod f. flavescens (Valmayor & D.Tiu) Ormerod, Malesian Orchid J. 12 (2013) 37

Epiphytic, pendent, up to 2 m long. Roots flexuose, glabrous. Stem unbranched, many-leaved, covered with tightly clasping rugulose sheaths, 1 cm diam. Leaves patent, oblong-ligulate, obtusely and unequally bilobed, 16-20 cm long, near the middle 3-4 cm wide. Racemes pendent, laxly several-flowered, as long as the leaves or a little shorter, peduncle short, with a few scales. Floral bracts oblongoid-cucullate, obtuse, slightly recurved, much shorter than the ovary. Flowers c. 4-7, patent, glabrous. Sepals broadly elliptic, obtuse, towards the base spathulate-narrowed, c. 3 cm long. Lateral sepals oblique. Petals similar to the sepals but a little smaller. Lip small, cucullate, 1.4 cm long, lateral lobes semiquadrate, broadly obtuse, mid-lobe lanceolate, acuminate, incurved, inside with raised thickened keels. Column thick, short; pollinia obliquely rhombic; stipe oblong, acuminate; viscidium triangular-transverse, in front rounded. Ovary cylindrical, glabrous, 2 cm long.
(After Schlechter, 1911-1914, as Vandopsis longicaulis Schltr.).

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