~ John Mills Parrish, 2002
| Abbreviation | Place Name |
|---|---|
| Br. | Branch |
| Brinklow | locality in Hawlings River watershed |
| Ck | Creek |
| C&O | Chesapeake and Ohio Canal National Historic Park |
| Cons. | Conservation |
| Cty. | County |
| DC | District of Columbia |
| Fairland | Fairland Regional Park |
| Good Hope | Tributary of Paint Branch |
| Great Falls | Great Falls of Potomac River |
| Hist. | Historic |
| Hoyles Mill Diabase | Diabase geologic area, Boyds, MD |
| Hoyles Mill Park | Hoyles Mill Conservation Park, Boyds, MD |
| H&S | references Flora of DC and Vicinity, Hitchcock & Standley, 1919 |
| Lewisdale | locality near Frederick County, north of Little Bennett Park |
| Little Falls | Little Falls of Potomac River near DC line |
| LPB | Little Paint Branch |
| Mill Creek | Tributary of Rock Creek |
| MNHP | Maryland Natural Heritage Program database |
| N. or n. | North |
| NBRC | North Branch Rock Creek Stream Valley Park |
| NWB | Northwest Branch Park |
| Nyssa | Black Gum |
| PB | Paint Branch |
| PG | Prince George’s |
| Plummer’s Is. | Island in Potomac River at Beltway |
| Pk | Park |
| Potomac Gorge | Area from Great Falls to DC line |
| Pt. | Point |
| R. | River |
| Rachel Carson | Rachel Carson Conservation Park |
| RCk | Rock Creek |
| Rd | Road |
| Reg. | Regional |
| Rt. 29 | Route 29 (Colesville Rd/Columbia Pike) |
| Serp. | Serpentine geologic area, Travilah, MD |
| Shale | River Rd. Shale area |
| S.I. | Smithsonian Institution database records |
| St. | State |
| Triassic Basin | Greater Poolesville area to the Potomac River |
| Trib. | Tributary |
| Wtrsd | Watershed |