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FOC | Family List | FOC Vol. 25 | Orchidaceae | Ponerorchis

6. Ponerorchis tominagae (Hayata) H. J. Su & J. J. Chen, Fl. Taiwan, ed. 2. 5: 1029. 2000.

白花小红门兰 bai hua xiao hong men lan

Gymnadenia tominagae Hayata, Icon. Pl. Formosan. 6: 93. 1916; Amitostigma tominagae (Hayata) Schlechter; Chusua kunihikoana (Masamune & Fukuyama) P. F. Hunt; Orchis kiraishiensis Hayata f. leucantha Masamune; O. kiraishiensis var. leucantha (Masamune) Masamune; O. kuanshanensis S. S. Ying; O. kunihikoana Masamune & Fukuyama; O. taoloii S. S. Ying; O. tominagae (Hayata) Soó; Ponerorchis kiraishiensis (Hayata) Ohwi var. leucantha (Masamune) A. T. Hsieh; P. kuanshanensis (S. S. Ying) S. S. Ying; P. kunihikoana (Masamune & Fukuyama) Soó; P. taoloii (S. S. Ying) T. P. Lin.

Plants 3.5-18 cm tall. Tubers ovoid to subglobose, 5-10 × 4-9 mm. Stem green, (1-)2-6 cm, with 1 or 2 tubular sheaths at base, 1-3-leaved. Leaves cauline, alternate and widely spaced, or rarely clustered near base of stem, green, lacking purple spots, lanceolate to linear-oblong, 2-7 × 0.5-0.8 cm, glabrous, apex acute. Inflorescence erect, green, 2-10 cm, glabrous; rachis 1-2 cm, (1 or)2-4-flowered; floral bracts lanceolate to ovate-lanceolate, 5-12 × 2-3 mm, shorter than to slightly exceeding ovary, apex acuminate. Flowers secund, whitish or with purple or red dots on lip, medium-sized; ovary cylindric-fusiform, 8-10 mm including pedicel, glabrous. Dorsal sepal erect, oblong to elliptic, 5.5-7 × 2-3 mm, 3-veined, apex obtuse or subacute; lateral sepals ovate-oblong, oblique, 7-9 × 3-4 mm, 3-veined, apex obtuse or acute. Petals erect, forming a hood with dorsal sepal, ovate, oblique, 5-6.5 × ca. 3 mm, glabrous, 3-veined, apex obtuse; lip obtriangular to obovate, 8-12 × 7-11 mm, 3- or 4-lobed above middle, margin subentire to irregularly serrate, spurred, disk pubescent on midvein, tinged greenish at base, sometimes spotted with rose; lateral lobes subtriangular to ovate, ca. 3 × 3 mm, apex obtuse or subacute; mid-lobe ovate-quadrangular, 3-5 × 4-5 mm, margin slightly undulate, apex truncate, shallowly to deeply emarginate and forming 2 lobules, often apiculate between lobules; spur pendulous, straight, cylindric to conic-cylindric, 4-5.5 mm, much shorter than ovary, apex obtuse. Fl. Jul-Aug.

● Mossy rocks in alpine forests, alpine grasslands, scree slopes; 2700-3800 m. Taiwan.


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