e-Flora of Thailand
Volume 12 > Part 1 > Year 2011 > Page 16 > Orchidaceae > Anoectochilus
4. Anoectochilus lylei Rolfe ex Downie
Bull. Misc. Inform. Kew 1925: 411. 1925; Seidenf. & Smitinand, Orchids Thail.: 89. 1959; Seidenf., Bot. Tidsskr. 66: 325, fig. 17. 1971; Dansk Bot. Ark. 32(2): 58, fig. 32. 1978; Opera Bot. 114:33. 1992; Thaithong, Thai Orchids (in Thai]: 47. 2000; Sitthisajjadham, Wild Orchids Thail. [in Thai]: 68. 2006. Fig. 5.
Accepted Name : This is currently accepted.
Description : Flowering shoots 9–21 cm tall. Foliage leaves dark green with pink to whitish reticulation above, uniformly purplish to pale green below, lamina broadly and obliquely ovate to elliptic, acute to obtuse, mucronate, (1.4)2–5.7 by (0.9–)1.2–3.9 cm. Inflorescence glandular-pubescent; rachis up to 5.1 cm long, 1- to 11-flowered; bracts ovate, 1-veined, glandular-pubescent on the dorsal side, 8.7–9 by 5.7–6.4 mm. Flowers subsessile, mainly green with white petal margins and labellum and pale orange column. Sepals glandular-pubescent on the dorsal side; dorsal sepal ovate, ca 7.5 by ca 4.2 mm; lateral sepals obliquely linear-oblong, 10.3–10.5 by ca 3.7 mm. Petals falcately and very obliquely oblanceolate-oblong, 8–8.1 by 3–3.2 mm. Labellum 6–8.7 mm long along the mid-line; spur pointing backwards (parallel to the ovary), describing an obtuse angle to the mesochile, (conical-)cylindric, retuse, 4.5–5.5 mm long, approximately the distal half protruding below the bases of the lateral sepals; mesochile with a pair of narrow (erose-)dentate flanges; epichile lobules 7–11.3 mm long, 4–5 times as long as wide, describing an acute angle to each other when flattened, flat at base. Column porrect (more or less continuing the line of the ovary), ca 4.7 mm long; wings on the front not prolonged into the spur; anther ca 3.8 mm long. Ovary 8.5–14 mm long. Capsule spreading, subsessile, ca 1.6 cm long, 0.5–0.6 cm in diameter.
Thailand : NORTHERN: Chiang Mai (Mae On, LYLE/herb. – type: Kerr 297 holotype -K), Phitsanulok (Thung Salaeng Luang); NORTH-EASTERN: Loei; EASTERN: Chaiyaphum (Ban Thung Kamang); SOUTH-EASTERN: Chanthaburi (Khao Soi Dao).
Distribution : Myanmar, Vietnam.
Ecology : Seasonal evergreen forests and hill evergreen forests on granite or sandstone bedrock; 750–1,400 m alt. Flowering: November–February.
Vernacular : Ueang din pak som (เอื้องดินปากส้อม).