| Author | Young, D.P. |
| Year | 1952 |
| Title | Studies in the British Epipactis - parts III and IV |
| Type | Paper |
| Source | Watsonia Vol 2: 253-276. |
| Illustrations | Half-tone photographs and line drawings |
| Notes & Purpose | Status | Taxon | English | Classification |
|---|---|---|---|---|
| For identification | Current | Epipactis | Epipactis helleborines | Plantae: Asparagales: Orchidaceae |
| For identification | Current | Epipactis phyllanthes | Green-flowered Helleborine | Plantae: Asparagales: Orchidaceae |
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