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FNA | Family List | FNA Vol. 26 | Orchidaceae

32. Epipactis Zinn, Cat. Pl. Hort. Gott. 85. 1757.
[name conserved]

[Ancient Greek name used by Theophrastus for plant used to curdle milk]

Paul Martin Brown & George W. Argus

Epipactis helleborine

Credit: Harvard University Herbaria

Herbs perennial, terrestrial, glabrous or puberulent to glabrate. Roots from short rhizome, fibrous. Stems leafy. Leaves several, alternate, sheathing, plicate, grading into floral bracts. Inflorescences terminal racemes; floral bracts leaflike, often exceeding flowers. Flowers few to many, resupinate, pedicellate; perianth free, spreading or loosely connivent, subequal; sepals ovate to ovate-lanceolate, concave; petals often shorter than sepals; lip sessile at base of column, fleshy, divided into 2 parts by central constriction, proximal part (hypochile) deeply concave to saccate, distal part (epichile) triangular to oblanceolate, with pair of calli near base; column curved over lip, broadened distally, short; anther terminal, sessile; pollinia 4, mealy. Fruits capsules, pendent to spreading, obovoid to ellipsoid.

Species ca. 25 (3 in the flora): North America, Mexico, Eurasia, North Africa.

1 Lip 3-lobed, distal part linear-oblanceolate to narrowly spatulate-oblanceolate; lateral sepals 16–24 mm.   2 Epipactis gigantea
+ Lip not 3-lobed, distal part triangular-ovate to broadly triangular; lateral sepals 6–13 mm.   (2)
2 (1) Lip 9–12 mm, distal part triangular-ovate, calli at base not rugose; ovary glabrous; flowers green to pink to purple to yellowish.   3 Epipactis helleborine
+ Lip 5.5–6.5 mm, distal part broadly triangular, calli at base rugose; ovary tomentose; flowers dark wine to cranberry red.   1 Epipactis atrorubens

Lower Taxa


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Flora of China  
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