In c r e .V i c e s of rocks. 
Along Patapsco River, Wafers ; above Great Falls, Palmer \ 
Salt Pond Mountain, Va., Britton, Maxon^ Pollard'^ Smythe 
Co., Small\ Giles Co.. Richardson, 
ttt Leaves 2'pinnate to j-pinnate below, 
8. A. ruta-muraria L. PI. 4. 
Asplenium ruta-muraria L. 1. e. io8i. Eaton^ 
I.e. I : 107. t. 15. f. I ; in Gray, 1. c. 684. 
Underw, in 111. FL i : 25 ; Nat. Ferns 106; in 
Britt. 1. e. 12. Clute^ 1. e. 162. Wat, 1. e. 157. 
Wall Rue. 
Plants I dm. more or less high ; ultimate divisions of 
the leaves rhombic, 6 mm. or less 1., apex toothed or in- 
cised ; stipes green. 
In crevices of rocks, or on old walls. 
Aloni^" Shenandoah ^\\e\', Pahner ; Natural Bridge, Maxo7t^ 
Pollard:^ Mount Crawford, Heller. 
Asplenii species were used in Pre-Linnean times much in the 
same way as Adiantnm Capillus- Veneris. Parkinson (Theat. 
Bot. 2: 105 1. 1640.) says of (^Asplenium^ Triekoma?ies : "This 
Maidenhair in our Land being more plentifull then the rest" 
"and both stayeth the shedding of the haire and causeth it to 
grow thicke". 
vs. ATHYRIUM Roth. 
Athyrium (a vocabulo ix6vpo<s patuhim dcrivatum) 
Roth, 1800. Cat. Bot. 2 : 143. 
35 
