Spineless Hornwort Ceratophyllum echinatum GrayEndangered (MD)  -  S2 (State rare)    
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Nymphaeales   >   Family Ceratophyllaceae   >   Genus Ceratophyllum   
Spineless Hornwort in Garrett Co., Maryland (9/23/2015). Photo by Seth Metheny. (MBP list)

Spineless Hornwort in Anne Arundel Co., Maryland (8/28/2020). (c) johnbotany, some rights reserved (CC BY-NC). Photo by John Hall. (MBP list)

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