A Key to the African genera of Leucobryaceae
M. Onraedt
Extracted from: Bryophytes des iles mascareno-malgaches et Seychelles I et II Bull. Jard. Bot. Nat. Belg. 46:351-378 (1976)
Translated by C.R. Stevenson
| 1 | Nerve with a median group of stereids [stereome] | Leucophanes |
| 1* | Nerve without median group of stereids | 2 |
| 2 | Chlorocysts in 3 layers in the upper part of the leaf | 3 |
| 2* | Chlorocysts in a single layer, throughout the length of the leaf | 4 |
| 3 | All the chlorocysts covered by leucocysts [not in Africa] | Arthrocormus |
| 3* | A single external layer of chlorocysts on both sides of the nerve [not in Africa] | Exodictyon |
| 4 | All the chlorocysts quadrangular in cross-section | 5 |
| 4* | Upper chlorocysts always triangular in cross-section | 6 |
| 5 | Capsules immersed, without a peristome | Ochrobryum |
| 5* | Capsule exserted, with a peristome | Leucobryum |
| 6 | Leucocysts in two layers towards the middle part of the leaf | Cardotia |
| 6* | Leucocysts in 6-10 layers towards mid-leaf | Octoblepharum |
TBG37/leub Issue 1 - 15.08.96
