Volume 12 > Part 3 > Year 2022 > Page 929 > Orchidaceae > Pinalia

3. Pinalia amica (Rchb.f.) Kuntzewfo-0000273449

Revis. Gen. Pl. 2: 679. 1891; S.C.Chen et al. in Z.Y.Wu et al. (eds.), Fl. China 25: 357. 2009.— Eria amica Rchb.f., Xenia Orchid. 2: 162, t. 168(III, 6–9). 1870; Hook.f., Fl. Brit. India 5: 800. 1890; Smitinand, Nat. Hist. Bull. Siam Soc. 19: 38. 1958; Seidenf. & Smitinand, Orchids Thailand: 308, 784, fig. 231. 1960–1965; Seidenf., Opera Bot. 62: 115, fig. 71, t. VIIId. 1982; Opera Bot. 114: 188. 1992; N.Pearce & P.J.Cribb, Fl. Bhutan 3(3): 380. 2002; Nanakorn & Indhamusika, Queen Sirikit Bot. Gard. 6 [in Thai]: 176 (incl. colour photos). 2000; Thaithong, Thai Orchids [in Thai]: 239, colour photos on pp. 238–239. 2000. Fig. 504; Plate LXXXIII: 1.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Stems fleshy to pseudobulbous, cylindrical to fusiform, 2.3–18.5 cm long, 0.5–1.2(–2.7) cm in diameter. Leaves 2–3, (sub)sessile, (linear-)lanceolate, obtuse to acuminate, 3.5–20.8 by 0.4–2.8 cm. Inflorescences arising from fully developed leafy stems, lax, 1.7–12.6 cm long; peduncle 0.3–3 cm long, sometimes bearing 1–2 scale leaves at base; rachis pubescent/tomentose with stellate hairs; bracts spreading to reflexed, 6.5–14.1 mm long. Flowers 4 to many, mainly greyish white or greenish white (sepals and petals red- or purple-veined; labellum keels and side lobes purple, mid-lobe yellow). Sepals obtuse to acute, subglabrous to pubescent with stellate hairs on the dorsal surface; dorsal sepal (linear-)oblong, 7–10.7 by 2.9–4 mm; lateral sepals falcately (ovate-)triangular, 7.2–10.4 by 4.1–6.2 mm. Petals somewhat spreading, obliquely lanceolate, rounded to acute, 6.7–9.4 by 2.1–3.3 mm. Labellum flexibly jointed to column foot (angle acute), 3-lobed at the middle, (5.3–)6.5–8.5 mm long, (4.1–)5.7–7.3 mm wide across side lobes when flattened, ca 1.2 times as long as wide, shorter than dorsal sepal; side lobes rounded to obtuse, 1.7–2.3 mm (along front edge), not connate, describing acute angles to mid-lobe when flattened; mid-lobe continuing the gentle curve of the disk, swollen, reniform, retuse, 2.7–3.5 by 4.7–6.1 mm, wider than long; labellum ornamented by 3 smooth keels starting from its base; median keel linear, extending into the mid-lobe; lateral keels subclavate, terminating on distal part of the disk, less often on the mid-lobe. Column foot flat or very nearly so. Ovary 8.9–22 mm long, longer than dorsal sepal, pubescent/tomentose with short reddish brown stellate hairs.

Thailand : NORTHERN: Mae Hong Son, Chiang Mai, Nan (Phu Huat), Uttaradit (Phu Soi Dao), Tak (Mae Sot), Phitsanulok (Phu Miang); NORTH-EASTERN: Loei, Nakhon Phanom (Phu Langka); EASTERN: Chaiyaphum (Phu Khiao), Nakhon Ratchasima (Khao Yai); SOUTH-WESTERN: Kanchanaburi (Khao Laem), Phetchaburi (Kaeng Krachan), Prachuap Khiri Khan (Huai Yang); PENINSULAR: Phangnga (Sri Phangnga), Narathiwat (Hala-Bala).

Distribution : N & NE India (type from Assam), Nepal, Bhutan, Bangladesh, Myanmar, China (Yunnan), Indochina, Taiwan.

Ecology : Growing as an epiphyte in upper tropical rain forests, seasonal evergreen forests, upper mixed deciduous forests, hill evergreen forests and Rhododendron thickets, 350–1,800 m alt. Flowering: mainly December–April, but also recorded in July–October.