Diglyphosa latifolia Blume, Bijdr. (1825) 337; Tab. & Pl. Jav. Orchid. (1825) t. 60
Type: Blume s.n. (1822, Java, Meggamedong) (holo L)
- Diglyphis latifolia (Blume) Miq., Fl. Ned. Indië 3 (1859) 654
- Chrysoglossum latifolium (Blume) Benth. & Hook.f., Gen. Pl. 3 (1883) 508
- Diglyphosa latifolia Blume var. celebica Schltr., Repert. Spec. Nov. Regni Veg. 10 (1911) 15
- Type: Schlechter 20720 (holo B, lost; lecto: the description, Fedde, Rep. 10 (1911) 15, chosen by v.d. Burg & de Vogel 1997)
- Diglyphosa celebica (Schltr.) Schltr., Orchideen (1914) 131
- Diglyphosa elmeri Ames in Elmer, Leafl. Philipp. Bot. 5 (1912) 1555
- Type: Elmer 11815 (holo AMES)
- Chrysoglossum macrophyllum King & Pantl., J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 64 (1895) 335
- Type: Pantling 315 (Sikkim, Chel valley, 4000 ft.) (holo K)
- Diglyphosa macrophylla (King & Pantl.) King & Pantl., Ann. Roy. Bot. Gard. (Calcutta) 8 (1898) 98, pl. 136
Plant to 90 cm high excluding the inflorescence. Roots 5-15 on each rhizome part between 2 pseudobulbs, to 17 cm long, 0.2-0.3 cm diam. Rhizome fleshy, to 25 cm long, 0.6-1.1 cm diam. Rhizome scales soon caducous, only remnants seen. Pseudobulbs alternatingly 1-3 bearing a leaf and 1 bearing an inflorescence, 1.5-5 cm apart, rather slender, more or less clearly articulated at the junction with petiole or scape, when dried all rather coarsely longitudinally wrinkled; leaf-bearing ones tapering to the top, quadrangular in section, 6.5-19 cm long, 0.7-1.1 cm diam.; inflorescence-bearing ones cylindrical, 1-2 cm long, 0.4-0.5 cm diam. Pseudobulb scales on leaf-bearing pseudobulbs c. 9 cm long, 0.7-0.8 cm diam., top acute, nerves c. 17; on inflorescence-bearing pseudobulbs 0.15-0.28 cm long, 0.6-0.8 cm diam, top acute to shortly acuminate, nerves c. 17; soon caducous. Petiole 8-33 cm by 0.25-0.5 cm. Leaf blade elliptic to lanceolate, 20-37 by 7.5-16.5 cm; top acute to acuminate; base attenuate; main nerves 5-8, below prominent, above slightly prominent; small nerves many. Raceme 30-80 flowered, branching in the largest plants. Scape 10-28 cm long, 0.2-0.4 cm diam.; internodes (2-)3-4, lowest one 2.9-7.5 cm long, central one(s) 4.2-9.5 cm long, highest one 0.7-9 cm long; scales (1-)1.5-3.5 cm long, 0.4-0.8 cm diam., their top acute to acuminate, nerves c. 19. Rachis somewhat triangular, to 18 cm long, 0.2-0.4 cm diam.; internodes 0.05-1.8 cm long. Bracts more or less reflexed, lanceolate, 0.6-1.3 by 0.17-0.26 cm; top acuminate; nerves 3. Flowers close together, most open at the same time. Pedicel star-shaped in section 0.5-0.8 by 0.05-0.06 cm; ovary star-shaped in section, 0.4-0.6 by 0.07-0.1 cm. Median sepal somewhat incurved, lanceolate, 0.9-1.62 by 0.2-0.4(-0.5) cm; top acuminate; nerves 5, mid-rib slightly prominent outside. Lateral sepals rather broadly inserted on the column-foot, lanceolate, more or less strongly falcate, 0.65-1.3 by 0.23-0.4 cm; top acuminate; nerves 5, midrib slightly prominent outside. Petals ovate-lanceolate, somewhat falcate, 0.65-1.33 by 0.25-0.52 cm; top acuminate; nerves 5, midrib slightly prominent outside. Lip mobile, narrowly attached on the column-foot, rather fleshy, patent, entire, in outline oblong to obovate and somewhat constricted in the middle, the distal part rather strongly recurved, 0.41-0.6 by 0.2-0.4 cm; base semi-orbicular; top obtuse, with a narrowly triangular, acute or obtuse, 0.01-0.04 cm long tip; margins entire, sometimes the lateral margins finely papillose; keels 2, fleshy, starting 0.1-0.15 cm from the base, and there 0.15-0.25 cm apart, semi-orbicular, 0.15-0.2 cm long, 0.05-0.1 cm high, margin entire, keels converging towards the front, each continuing 0.05-0.08 cm apart as a low, c. 0.02 cm high, entire, fleshy ridge, ending and more or less clearly fusing 0.05-0.15 cm from the top. Column upper part more or less clearly curved forward, slightly swollen at the obtuse, blunt tipped top, 0.35-0.56 cm by 0.08-0.12 cm; laterally on either side with a narrow seam, 0.01-0.04 cm high, starting at the front of the column-foot, continuing upwards along the sides of the column, ending laterally of the stigma; column-foot simple, flat, 0.1-0.15 cm long, c. 0.1 cm wide, 0.03-0.05 cm high. Anther 2-celled, cordate, c. 0.1 by 0.1 cm; top acute and projecting upwards; base emarginate; lateral margins on either side with a sharp, c. 0.05 cm long, downwards projecting point; central part of connective somewhat cleft. Pollinia conical to ovoid, laterally somewhat flattened, 0.08-0.1 cm by 0.06-0.07 cm; top obtuse; base semi-orbicular. Stigma semi-orbicular, c. 0.08 by 0.08 cm; rostellum an inconspicuous, narrow ridge. Fruit not seen.
(After Van der Burgh and De Vogel, 1997).