General data principles
Common Adders-tongue
Ophioglossum polyphyllum
Inclusion rationale
Why did we include this species on our website? Because it was mentioned in the following source(s):
Features data
The following sources have provided data on features for this species.
| Source document | Features |
|---|---|
| Ferns of the Witwatersrand
Dec. 17, 2025, 7:08 a.m. |
|
Photo credits
You can see the credits underneath each photo of the species pages as well. Credits, in order of appearance:
- (c) elke_erb, some rights reserved (CC BY-NC) source
- (c) Tony Rebelo, some rights reserved (CC BY-SA), uploaded by Tony Rebelo source
- (c) Sandra Falanga, some rights reserved (CC BY-NC), uploaded by Sandra Falanga source
- (c) Ron Frumkin, some rights reserved (CC BY-NC), uploaded by Ron Frumkin source