578 PROCEEDINGS OF THE ACADEMY OF [Oct., 



Delaware. — Fawkes Run; Mineral Hill; Williamson; Wawa. 

 Chester. — Sugartown Barrens; Serpentine Ridge; Cedar Barrens; 

 West Chester; Sconnelltown; Brinton's Quarry; Unionville. 



— Nottingham Barrens. 



216. Cirsium discolor (Muhl.) Spreng. 



Occasional on dry open barren or edge of thicket. 

 Delaware. — Mineral Hill; Williamson; Lenni. 

 Chester. — West Chester. 



f217. Cirsium muticum Michx. 

 Frequent in moist depression, greenbrier thicket. 

 Delaware. — Mineral Hill; Williamson. 

 Chester. — West Chester. 



— Nottingham Barrens. 



II. Occasional Species of the Conowingo Barrens, Mostly 

 Stragglers from Surrounding Flora. 



1. ASPLENIUM FILIX-FCEMINA (L.) Bernll. 



Delaware. — Williamson. 



2. Dryopteris noveboracexsis (L.) A. Gray. 

 Delaware. — Fawkes Run. 



3. Dryopteris marginalis (L.) A. Gray. 

 Chester. — Cedar Barrens. 



4. Phegopteris hexagonoptera (Mx.) Fee. 

 Delaware. — Williamson ; Wawa. 



5. Typha latifolia L. 

 Delaware. — Williamson. 



6. Andropogon yirgixicus L. 

 Delaware. — Lenni. 



7. Paspalum circulare Nash. 

 Delaware. — Lenni. 



8. Panicum capillare L. 

 Chester. — Cedar Barrens. 



9. Panicum gattingeri Nash. 

 Chester. — Cedar Barrens. 



