Lecanorchis nigricans Honda var. yakusimensis
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Ordo: ORDO
Familia: FAMILIA
Genus: Lecanorchis
Name
Lecanorchis nigricans T.Hashim. emend. Suetsugu & Fukunaga – Wikispecies link – Pensoft Profile
Type
Japan, Kagoshima Pref., Yakushima Island, along the Hanaage River, 21–27 July 1986, Y. Hanei s.n. (holotype TNS!).
Emended description
Terrestrial, mycoheterotrophic herb. Inflorescence 10–25(–30) cm tall, solitary or branched at lower-half, purplish-white at flowering, black at fruiting, glabrous, ca. 0.8–1.5 mm in diam., with scale-like sheaths. Rhizome erect, J-shaped or complex, ligneous. Roots simple, radiate numerous, horizontally or downward elongate to 20–30 cm long, yellowish brown. Rachis 2–8 cm, 3–15 flowered, internode length of upper-half of rachis, 1–6(–10) mm. Floral bracts triangular, acute, 0.7–2.0 mm long. Pedicellate ovary ascending, 14–30 mm long. Flowers widely opening, ca. 2.5 cm in diameter. Sepals purplish white, linear, oblanceolate-spatulate, ca. 13–17 mm long, 3.3–4.0 mm wide, apex obtuse. Petals purplish white, linear, oblanceolate-spatulate, 13–17 mm long, 3.3–4.0 mm wide, apex obtuse. Lip spatulate to cucullate, strongly concave, 12–15 mm long, ca. 4.5 mm wide in natural situation, 7.5–8.0 mm wide when flattened, disc with rather scarce, long multicellular hairs which are rarely branched, near apex. Column 10–13 mm long, recurved, fused with lip about 1/2 its length, ventrally densely puberulent; anther purplish white, ca. 2.0 mm wide. Capsule 20–30 mm long, cylindrical-fusiform, black, ascending at 70–90 degree angle from axis. Flowering in mid-July to mid-September.
Additional specimens examined
JAPAN. Kagoshima Pref., Yakushima Island: along Hanaage River, 17 July 2015, Hiroaki Yamashita s.n. (OSA, in spirit collection), along Hanaage River, 27 July 2017, Hiroaki Yamashita s.n. (OSA, in spirit collection), along Osaki River, 17 July 2015, Hiroaki Yamashita s.n. (OSA, in spirit collection), along Nakase River, 17 July 2015, Hiroaki Yamashita s.n. (OSA, in spirit collection), Haruhira, 17 July 2015, Hiroaki Yamashita s.n. (OSA, in spirit collection), along Futamata River, Mt. Mochomu, 26 July 1991, Yoshie Hanei s.n. (TSN), along Futamata River, Mt. Mochomu, 26 July 1991, Yoshie Hanei s.n. (TSN), Kurio, 5 Aug. 1975, Doi s.n. (TSN).
Taxon Treatment
- Suetsugu, K; Shimaoka, C; Fukunaga, H; Sawa, S; 2018: The taxonomic identity of three varieties of Lecanorchis nigricans (Vanilleae, Vanilloideae, Orchidaceae) in Japan PhytoKeys, (92): 17 -35. doi
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