Holm — Additions to the Flora of Washinyton. 21 



1187^7. Panicum sphferocarpon Ell. 



Woods near Kiggs' Mill; Terra CoUa swamp; Chevy Chase; dry fields 

 near Hyattsville and the Reform School. 

 ii88r/. Panicum ramulosum Michx. * 



Terra Cotta swamp. 



1188^/. Panicum nitidum Lam. 



Old river bottom near Hyattsville; Terra Colta swamp. 



ii88f. Panicum lanuginosum Ell. 



AVoods at Forest Glen; Fort Totten. 

 *ii89«. Panicum linearifolium Scribn. 



Plummer'.s Island. Thos. H. Kearney, Jr. 

 1 192. Panicum Crus galli L. var. hispidum Gr. 



In the canal at Great Falls. 

 1 1 96. Cenchrus tribuloides L. 



Near Seven locks: along roads at Marshall Hall. 

 1203. Andropogon macrourus Michx. 



Sphagnnm swamps near Sural tsville. 

 1220. Woodwardia Virginica Sm. 



Common near Surattsville. AYm. R. Maxon. 

 *i222rf. Asplenium pinnatifidum Nuit. 



Two miles below Scott's Run on Virginia shore of Potomac. AVin. 

 Palmer and AA'm. R. Maxon. 



*i2226. Asplenium ebenoides R. R. Scott. 



Plummer's Island. AVm. Palmer. A single specimen. 

 1223. Asplenium angustifolium Michx. 



Ravines between Marshall Hall antl the Piscataway; western end of 

 Massachusetts avenue bridge and Rock Creek. AA'^m. Palmer. Abund- 

 ant along brooks in woodlands of the Potomac bluffs near Langley, A'a. 

 AVm. R. Maxon. 

 1226. Camptosorus rhizophyllus Link. 



Plummer's Island. D. LeRoy Topping. Several situations on rocky 

 cliffs of the A'irginia shore of the Potomac opposite Langley. AA^m. R. 

 Maxon. 

 1230. AspidJum cristatum Swtz. 



In the Lygodium swamp about two miles to the northwest of River- 

 dale, Md. AVm. Palmer and AA^m. R. Maxon. AA^oods near Great Falls, 

 Md.; near the spring-house, Takoma. 



1236. Cystopteris fragiiis Bernh. 



Common in ravines north of Marshall Hall; Potomac Landing, Alex- 

 andria County, Va. AVm. Palmer. Near Sandy Landing. 

 *i236ff. Cystopteris bulbifera (L.) Bernh. 



On the A'irginia shore of Potomac nearly opposite Langley, A"a. AA'^m. 

 Palmer and AVm. R. Maxon. Recorded in Flora Columbiana, Field and 

 Forest. A"ol. I, 1875, but with no locality. 



