Overlapping markers can be separated by clicking on them. 
Hovering the cursor over a marker will show the site's name.
Clicking on a marker will show information available about the collection site. (Compare with corresponding letter in table.)
| site | collection date | depth | substrate | salin | locality kind | comments | reference | |
|---|---|---|---|---|---|---|---|---|
![]()  | Blowing Rock, North Carolina, USA | 1939 or earlier | freshwater | spring-fed lake upon the Cohen estate, Blowing Rock, North Carolina. | Ferguson FF (1939-1940) 27 and from Ferguson 1954 - 143 |