Bulbophyllum contortum (Orchidaceae, Malaxideae), a new species from Yunnan, China Author Zhou, Zhuang 0000-0002-3894-2576 Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou 325005, China & Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China & zhuangchow @ 126. com; https: // orcid. org / 0000 - 0002 - 3894 - 2576 Author Wu, Peng-Yu 0000-0002-8253-7236 School of Biological and Chemical Engineering, Nanyang Institute of Technology, Nanyang, 473004, China & 18771068351 @ 163. com; https: // orcid. org / 0000 - 0002 - 8253 - 7236 Author Xu, Xiao-Wei 0000-0002-8896-3834 Wenzhou Forestry Technology Promotion and Wildlife Protection and Management Station, Wenzhou 325000, China & xuxw 21 @ 126. com; https: // orcid. org / 0000 - 0002 - 8896 - 3834 Author Zhao, Zhuang 0000-0002-8021-3879 Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China & fafuzzhuang @ 163. com; https: // orcid. org / 0000 - 0002 - 8021 - 3879 Author Lin, Ya-Jun 0000-0002-2228-4513 Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China & 1552672265 @ qq. com; https: // orcid. org / 0000 - 0002 - 2228 - 4513 1552672265@qq.com Author Xu, Wan 0000-0002-6205-8895 Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou 325005, China & xwzjyzs @ 163. com; https: // orcid. org / 0000 - 0002 - 6205 - 8895 Author Liu, Zhong-Jian 0000-0003-4390-3878 Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou 325005, China & Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China & zjliu @ fafu. edu. cn; https: // orcid. org / 0000 - 0003 - 4390 - 3878 zjliu@fafu.edu.cn text Phytotaxa 2022 2022-09-02 560 3 295 300 http://dx.doi.org/10.11646/phytotaxa.560.3.4 journal article 135069 10.11646/phytotaxa.560.3.4 7d5f488b-669a-4dde-87e8-0586cf8cdb51 1179-3163 7042694

TABLE 1. Comparison of B. contortum, B. lemniscatoides and B. leminiscatum.

Characteristics	B. contortum	B. lemniscatoides	B. lemniscatum
Pseudobulbs	subglobose, 8.5–15.5 mm in diam., not tuberculate, often somewhat irregularly depressed when old	ovoid, about 19 mm high, not tuberculate, slightly flattened, shriveled with longitudinal furrows when old	Globose, 12–19 mm in diam., strongly tuberculate, often somewhat irregularly depressed when old
leaves	2 leaves, broad lanceolate, 26–85 × 4–16 mm	2 leaves, linear-lanceolate to elongate-oblong, 10–25 × ca. 2.7 mm	3–4 leaves, elliptic-lanceolate, 38–51 × 6–12 mm
Scape	4–10 cm	15–20 cm	10–15 cm
inflorescence	racemose	racemose	cylindrically racemose
Sepals	ovate-triangular, concave, 1.5–2 × 1–1.5 mm, obtuse, 4-grooved, purplish red, green at the base, glossy inside, outside with dense papillae and sparse purple-red hairs	broadly elliptical-oblong, obtuse, 2-grooved, dark purple, with numerous white hairs	orbicular-ovate, obtuse, 3-grooved, dark purple, green at the base, connivent, united below the middle, outside with long spreading hairs
Appendages of sepals	6.0–10.0 mm long, 0.2–0.3 mm in diam., with 5–8 flanges contorted from a light cream-purple capillary axis, consisting of longitudinal crenate undulate white and cream- purple plates, gradually narrowed into capillary with fine papillae at base	5.0–10.0 mm long, ca. 0.1 mm in diam., finely rugose on surface with dense papillae, not lamellate	8.0–13.0 mm long, 0.6–1.0 mm in diam., 6–10 longitudinal crenate undulate plates radiate from a capillary axis, red-purple transversely banded with white
Petals	included, linear-lanceolate, obtuse, longer than and appressed to the column, white with a purple vein, ca. 1.2–1.4 × 0.5 mm, margin entire, apex acute	Petals linear bidentate, serrulate to near the base	small, included, linear-lanceolate, obtuse, longer than and appressed to the column, white with a purple streak
Lip	ligulate, ca. 1.5 × 1 mm, recurved, with dense fine papillae, dark-red purple, with V-shaped concavity on upper surface, base attached to end of column foot by an immobile joint, margin decurved.	smooth intense dark purple, elliptical-oblong, obtuse, equaling with petals.	broadly ovate, recurved, convex, obtuse, smooth, dark-blue purple.