Species Information - Mediocalcar uniflorum

Mediocalcar uniflorum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1911) 227

Type: Schlechter 20074 (holo B, lost; lecto AMES, chosen by Schuiteman 1997; iso BM)

Synonyms:

• Mediocalcar uniflorum Schltr. var. orientale Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1911) 228
  - Type: Schlechter 19584 (syn B, lost; lecto BM, chosen by Schuiteman 1997; iso AMES, BO, K, L)
• Mediocalcar rigidulum Schltr., Repert. Spec. Nov. Regni Veg. 16 (1919) 118
  - Type: Kempter s.n. (Kaiser Wilhelmsland, area behind Vanimo) (holo B, lost)
• Mediocalcar sepikanum Schltr., Bot. Jahrb. Syst. 58 (1922) 68
  - Type: Ledermann 9894 (holo B, lost; lecto L, chosen by Schuiteman 1997; iso K)

Roots densely covered with minute root-hairs, c. 0.5 mm thick. Rhizome creeping, more or less frequently branching, 1.5-2 mm thick. Cataphylls 5, closely appressed, tubular, subglabrous, subacute to acute, apiculate, slightly keeled near the tip. Pseudobulbs erect to suberect, (1-)2-4(-6) cm apart, terete, often slightly rugose in living specimens, (1-)2-3(-4) cm long, 2-2.5 mm across; base not or very slightly elongated. Leaves one per pseudobulb, sessile to subpetiolate, elliptic to linear-elliptic (index 3.5-12.5), (2-)2.5-6.5(-8) cm by (3.5-)6-15(-17) mm; apex obtuse, more or less unequally bilobed, mucronate, with the mucro shorter than the lobules; coriaceous. Inflorescences solitary, synanthous, at the base with a narrow scale c. 3.5 mm long. Peduncle 2-2.5 cm long, at the apex with a triangular, sometimes bifid or truncate bract 1-1.5 mm long. Pedicel and ovary 9-15 mm long. Flowers urceolate, more or less oblique, more or less laterally flattened, 9-14 mm long. Synsepalum 10-14 mm long and 14-19 mm wide when cut open and flattened; free tips only slightly spreading, 4-4.5 mm long; obtuse to subacute. Lateral sepals smooth or indistictly keeled near the tips. Petals rather variable in shape, linear, elliptic or lanceolate (index 4-7.5), 7-8.5 by 1-2 mm; apex acute to acuminate; 2- or 3-nerved. Lip 7-9.5 by 3-4 mm in natural position, the blade broadly ovate when flattened; claw 3.2-3.75 by c. 2 mm, auricles rather inconspicuous, reflexed; apex acute to acuminate, straight; margins erect, clasping the column; spur broadly cylindrical, recurved, parallel to the column, 2.5-3.8 mm long, 1.5-2.8 mm wide just below the mouth. Column broadly clavate, 4.5-5 mm long, c. 2.5 mm wide at the apex, foot short, c. 1 mm long. Fruit narrowly cylindrical, c. 4 cm by 3 mm. (After Schuiteman, 1997)

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