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

1. Dactylorhiza hatagirea (D. Don) Soó, Nom. Nov. Gen. Dactylorhiza. 4. 1962.

掌裂兰 zhang lie lan

Orchis hatagirea D. Don, Prodr. Fl. Nepal. 23. 1825.

Plants slender to robust, 10-40 cm tall. Tubers palmately 3-5-lobed. Stem erect, stout, hollow in robust plants, with 2 or 3 tubular sheaths at base, 3-6-leaved. Leaves erect or spreading, clustered and subopposite near base of stem, widely spaced and alternate above, green, not spotted, oblong to linear-lanceolate, (5-)8-15 × 0.8-3 cm, apex obtuse or acuminate. Rachis 2-15 cm, subdensely several to densely many flowered; floral bracts lanceolate, basal ones to 4 cm, becoming smaller above, exceeding ovary, apex acuminate. Flowers not secund, lilac to purplish rose, medium-sized; ovary and pedicel 8-14 mm. Sepals and petals lilac or purplish rose; dorsal sepal erect, ovate-oblong, concave, 5.5-7(-9) × 3-4 mm, 3-veined, apex obtuse; lateral sepals ovate-lanceolate to ovate-oblong, oblique, 6-8(-9.5) × 4-5 mm, 3-5-veined, apex obtuse. Petals erect, forming a hood with dorsal sepal, ovate-lanceolate, slightly oblique, 5.5-7 × 3-5 mm, 2- or 3-veined, apex obtuse; lip ovate to suborbicular, 6-9 × 6-10 mm, usually slightly broader than long, base spurred, margin entire to shallowly 3-lobed toward apex, margin slightly crenulate, apex or mid-lobe obtuse, disk minutely papillose, purplish red to rose, sometimes whitish toward base with a spoon-shaped patch of dark purple spots or lines; spur pendulous, ± straight to slightly curved forward, cylindric to conic, to 12 mm, equaling to slightly shorter than ovary, apex obtuse. Fl. Jun-Aug. 2n = 40, 80.

Shrubby slopes, grasslands along ravines; 600-4100 m. Gansu, Heilongjiang, Jilin, Nei Mongol, Ningxia, Qinghai, W Sichuan, Xinjiang, E Xizang [Bhutan, Kashmir, Mongolia, Nepal, Pakistan].

This entity has been widely known as Dactylorhiza latifolia (Linnaeus) Soó, a name that can no longer be used because its basionym, Orchis latifolia Linnaeus, has been rejected outright (see Vienna Code, p. 477). In Europe, the name D. latifolia has been applied in the sense of what is now generally known as D. incarnata. We regard D. hatagirea as an Asian species that is taxonomically distinct from D. incarnata.


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