- Plant: Water Tassel-Fern (Phlegmariurus squarrosus)
- Uploaded by Nick_Kurzenko
- Info: Entire plant / 2019-09-29 / US National Arboretum, Washington DC, US / License: All rights reserved
- Caption: Rock tassel fern (Huperzia squarrosa). Called Water tassel fern also. Another botanical name is Phlegmariurus squarrosus