Styloglossum versteegii (J.J.Sm.) T.Yukawa & P.J.Cribb, Bull. Natl. Mus. Nat. Sci., ser. B, 40(4) (2014) 150
Type: Pulle (Versteeg) 2485 (holo BO; iso L)
- Calanthe versteegii J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 13 (1914) 55
- Giulianettia disticha Ridl., Trans. Linn. Soc. London, Bot. 9 (1916) 201
- Type: Kloss s.n. (Camp 12 to 13, 10500 to 11000 ft.) (holo BM)
- Calanthe arundinoides J.J.Sm., Nova Guinea 14 (1929) 356, pl. 47, 16
- Type: Doorman 2 (not BO)
- Calanthe aurantimacula P.Royen, Alp. Fl. New Guinea 2 (1979) 137, fig. 57
- Type: Brass & Meyer Drees 9908 (holo L)
Terrestrial herb up to 25 cm high, erect or slightly decumbent. Stem elongate, sheathed in lower half, leafy in top half, 6-13 cm long. Leaves distichous; blade patent to spreading patent, subcoriaceous, often conduplicate, apical margin denticulate, glabrous, ovate-linear or linear, 3-9 by 0.3-0.5 cm, obtuse, base narrowly cuneate, midrib grooved above, prominent below; sheaths conduplicate, ribbed, often with crenulate margins. Inflorescences 1 or rarely 2, 1-3-flowered, up to 6 cm long. Peduncle glabrous, 1-3 cm long. Floral bracts persistent, lanceolate, acute or acuminate, margin minutely crenulate, 1.5-2.0 cm long. Pedicel with ovary l cm long, glabrous. Median sepal elliptic or oblong, 1.0-1.5 by 0.3-0.7 cm, cuspidate. Lateral sepals 1.1-1.3 by 0.3-0.7 cm, obliquely ovate-oblong or ovate, mid-nerve keeled, often forming an apiculate tip. Petals 0.8-1.2 by 0.5-0.9 cm, elliptic-obovate, obtuse, often apiculate, sometimes slightly falcate. Lip subquadrate to suborbicular when spread, 0.5-0.6 by 0.3-0.5 cm, in natural position apical margins often inrolled to give a triangular point; callus in mouth of spur rounded, bilobed, variously developed depending upon maturity of the flower; spur short, conical, 0.5-0.8 cm long, rounded. Column 0.5-0.6 cm long. Anther ovoid, 0.1 cm across; pollinia 8, pyriform. (After Thomas, 1999).
Note: An unusual high altitude species with elongated stems and very narrow leaves.