| Sceptridium rugulosum | |
|---|---|
|   | |
|  Scientific classification   | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Division: | Polypodiophyta | 
| Class: | Polypodiopsida | 
| Order: | Ophioglossales | 
| Family: | Ophioglossaceae | 
| Genus: | Sceptridium | 
| Species: | S. rugulosum  | 
| Binomial name | |
| Sceptridium rugulosum W.H.Wagner  | |
Sceptridium rugulosum, also known as the ternate grapefern or the St. Lawrence grapefern, is a species of fern. It is an evergreen, perennial species found in the vicinity of the St. Lawrence Seaway. [1]
Similar to Sceptridium multifidum , Sceptridium rugulosum is found in low-lying, mossy areas, although its leaves emerges in later than those of S. multifidum. [2] [3]
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