PLANTS COLLECTED OR OBSERVED. 535 



Ludwigia alternifolia L. In open places in the Dismal Swamp, July 14 (No. 



1666). 

 Ludwig-ia glandulosa Walt. Along a ditch at roadside, Edenton, N. C, July 30 



(No. 1921). 

 Ludwigia linearis Walt. Frequent in ditches and marshes. Newbern, N. C. 



(No. 22415); Wallaceton (No. 2336). 

 Ludwigia pilosa Walt. In a bog, Newbern, N. C. (No. 1954). 

 Ludwigia virgata Michx. Dry sandy fields. Newbern. N. C, August 1 (Nos. 



1931, 1981). 

 Jussiaea decurrens (Walt.) DC. In marshy ground along the Dismal Swamp 



Canal, Wallaceton (No. 2353). 

 Onagra biennis (L. ) Scop. Roadsides. 

 Oenothera humifusa Nutt. Abundant among the dunes, Ocean View to Virginia 



Beach (Nos. 43 C. & K., 1389, 1452. 1808). 

 Oenothera laciniata Hill. Frequent in sandy fields and roadsides near Norfolk, 



May (Nos. 1013, 1024). 

 Kneiffia longipedicellata Small. In fresh-water river marshes; along Northwest 



River, July 9 (No. 1515); along Pasquotank River (No. 1998). 

 Circaea lutetiana L. In rich, low woods, Ocean View, July 8 (No. 1468). 



HALORAGIDACEAE. 



Proserpinaca palustris L. Frequent in open, fresh-water marshes: Northwest, 



July 9 (No. 1548). 

 Proserpinaca pectinata Lam. With the preceding. 

 Myriophyllum heterophyllum Michx. Frequent in ponds: Ocean View, July 8 



(No. 145.")) ; Duck Pond, Dismal Swamp. July 13. 



ARALIACEAE. 



Aralia spinosa L. Common in dry pine woods, abundant inside the dunes 

 (No. 2176.) 



APIACEAE. ' 



Daucus carota L. Abundantly naturalized in fields and roadsides (No. 1433). 



Eryngium virginianum Lam. In fresh- water river marshes: Along the Pasquo- 

 tank River. August 3 (No. 2008): along the Northwest River (No. 2380). 



Sanicula canadensis L. In fertile soil, open pine woods. Ocean View (No. 1470). 



Foeniculum foeniculum ( L. ) Karst. Frequent at roadsides and about dwell- 

 ings, naturalized (No. 1571). 



Sium cicutaefolr'um Q-mel. Common in fresh-water river marshes (No. 1730). 



Cicuta maculata L. Frequent in marshes, especially at the edge of swampy 

 woods (No. 2357). 



Ptilimnium capillaceum (Michx.) Holl. In moist ground at roadsides: North- 

 west, July 9 (No. 1564); Edenton, N. C, July 30 (No. 1911). 



Ptilimnium sp. nov.? Swampy banks of Cohoon Creek, near Suffolk, July 18 

 (No. 1705): immature. 



Hydrocotyle ranunculoides L. f. In marshy places at roadside, Edenton, N.C. 

 (No. 1908). 



Hydrocotyle umbellata L. Common in moist, sandy soil (Nos. 1556, 1827, 1907). 



Hydrocotyle verticillata L. In moist, sandy soil, Virginia Beach (No. 1383). 



Centella asiatica (L.) Urban. Common in moist, sandy soil (Nos. 24 C. & K., 

 1382). 



1 Determined with the assistance of Dr. J. N. Rose. 

 23502— No. 6—01 15 



