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

15. Platanthera devolii (T. P. Lin & T. W. Hu) T. P. Lin & K. Inoue, J. Phytogeogr. Taxon. 28: 5. 1980.

长叶舌唇兰 chang ye she chun lan

Tulotis devolii T. P. Lin & T. W. Hu, Quart. J. Chin. Forest. 9: 53. 1976; Platanthera longicalcarata Hayata var. devolii (T. P. Lin & T. W. Hu) S. S. Ying.

Plants 20-35 cm tall. Rootstock creeping, slender, stoloniferous. Stem erect, with 2 tubular sheaths at base, 2-leaved. Leaves cauline, alternate, widely spaced, linear to linear-lanceolate, 8-18 × 1-2.5 cm, base clasping, apex acute. Peduncle slender, with 2 or 3 small, lanceolate bracts; rachis 10-25 cm, 8-16-flowered; floral bracts lanceolate, 10-14 mm, apex acuminate. Flowers yellowish green; pedicel and ovary fusiform-cylindric, 8-15 mm. Dorsal sepal erect, forming a hood with petals, broadly ovate, concave, 2.5-3 × 2.5-3 mm, glabrous, 3-veined, apex obtuse; lateral sepals spreading or reflexed, oblique, ovate to narrowly elliptic, 4-5 × 2-3 mm, glabrous, 3-veined, apex obtuse. Petals ovate-lanceolate, oblique, ca. 3 × 1.5-2 mm, 1-veined, apex obtuse; lip pendulous and strongly deflexed, ligulate-lanceolate, 6-8 × ca. 2 mm, with small lateral lobes at base, apex obtuse; basal lobes square or obtusely triangular, to 2 mm, apex acute; spur pendulous, cylindric, 10-14 mm, exceeding ovary, slender, apex acute. Fl. Jun-Sep.

● Shaded places and wet mossy rocks in forests, forest margins, roadsides; 1900-2400 m. C and N Taiwan.


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