Key to Habenaria artificial groups in Flora Zambesiaca regionen
1a | Basal leaves 1–2, orbicular or heart-shaped, appressed to ground | Habenaria group A |
1b | All leaves borne along stem, not appressed to ground | 2 |
2a | Petals entire | Habenaria group B |
2b | Petals 2-lobed | 3 |
3a | Spur 3.5 cm long or more | Habenaria group C |
3b | Spur less than 3.5 cm long | 4 |
4a | Petals incompletely divided, at least the basal c. 5 mm undivided | Habenaria group D |
4b | Petals 2-lobed almost to base | 5 |
5a | Dorsal sepal erect, more or less surrounding the column | Habenaria group E |
5b | Dorsal sepal reflexed, leaving column exposed | Habenaria group F |
References:
WCSP (2020). 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://wcsp.science.kew.org/ Retrieved 13 April 2020.