PlantaeAsparagalesOrchidaceaeRaskotiBhakta BahadurSchuitemanAndréJinWei-TaoJinXiao-HuaA taxonomic revision of Herminium L. (Orchidoideae, Orchidaceae)PhytoKeys194201720177917410.3897/phytokeys.79.11215 Herminium pygmaeum Renz, Edinb. J. of Bot. 56(1):106. 2001.Figs 6C, 7C, 8C, 9C, 11CType.

BHUTAN. Thimphu district, below Darkey Pang Tso, north of Paro, 3960 m, 04.08.1991, Noltie H. J., 105 (Holotype: E! [E00008013]).

Description.

Plant 2–16 cm tall. Tuber globose, 3–4 × 3–4 mm. Stem with a sheath and 2–3 basal leaves. Leaves linear-oblong, 1.5–3.5 × 0.5–0.15 cm, apex subacute. Inflorescence 2–10 cm, peduncle cylindrical with 1.5–2.5 × 0.5–2 mm, lanceolate, acute peduncle-scales, rachis glabrous, 2–4.5 mm long subdensely 3–5-flowered; floral bracts minute, lanceolate, acute, 0.5–2 × 0.5–0.6 mm. Flowers secund, 3–5 mm long, sepals green, petals yellowish, pedicel and ovary swollen, 3–5 × 1–1.3 mm, apex beaked and strongly hooked. Dorsal sepal ovate, concave, 3–4 × 1.5 mm, apex obtuse, lateral sepals ovate-lancelate, oblique, apex obtuse, 3–4 × 1.5–2 mm. Petals trowel-shaped, oblique, fleshy and narrowed towards apex, apex subacute, 3–3.5 × 1–1.5 mm, lip ovate, base concave, spurless, 3–4 × 2–2.5 mm, 3-lobed above middle, lateral lobes triangular, obtuse; mid-lobe narrowly triangular, apex acute, 1 mm long. Column 0.7 mm tall, pollinia globose; caudicles indistinct, viscidia involute, horn-like, rostellum triangular, stigma transversely oblong, situated below the rostellum. Fruit oblong, 4–5 mm long.

Flowering time.

July–August.

Habitat.

Terrestrial on wet cliff ledge at elevations of 3900–4000 m.

Distribution.

Bhutan, China.

Specimens examined.

CHINA: Tibet, Yadong county, Xiakangbu to Shangkangbu, Road 714, 71 km, 3965 m, 24.08. 2013, FLPH Expidition Team, 13-2115 (PE).

Dorsal sepal of Herminium. A H. monorchis B H. chloranthum C H. pygmaeum D H. josephi E H. monophyllum F H. lanceum G H. macrophyllum H H. glossophyllum I H. coeloceras J H. fallax K H. handelii L H. elisabethae M H. himalayanum N H. clavigerum O H. quinquelobum P H. macrophyllum Q H. mannii R H. biporosum.

Lateral sepal of Herminium. A H. monorchis B H. chloranthum C H. pygmaeum D H. josephi E H. monophyllum F H. lanceum G H. macrophyllum H H. glossophyllum I H. coeloceras J H. fallax K H. gracile L H. elisabethae M H. himalayanum N H. clavigerum O H. quinquelobum P H. macrophyllum Q H. lanceum R H. biporosum.

Petal of Herminium. A H. monorchis B H. chloranthum C H. pygmaeum D H. josephi E H. monophyllum F H. lanceum G H. josephi H H. coiloglossum I H. coeloceras J H. fallax K H. himalayanum L H. elisabethae M H. alaschanicum N H. ophioglossoides O H. quinquelobum P H. macrophyllum Q H. ecalcaratum R H. biporosum

Lip of Herminium. A H. monorchis B H. chloranthum C H. pygmaeum D H. josephi E H. monophyllum F H. macrophyllum G H. macrophyllum H H. alaschanicum I H. coeloceras J H. fallax K H. longilobatum L H. elisabethae M H. alaschanicum N H. lanceum O H. quinquelobum P H. kamengense Q H. coiloglossum R H. biporosum.

Pollinia structure in Herminium. A H. josephi B H. macrophyllum C H. pygmaeum D H. handelii E H. lanceum F H. fallax G H. forceps H H. latilabre I H. coeloceras.