SENECIO L. (Groundsel, Ragwort, Squaw-Weed) 



1489 S. VULGARIS L. Waverly. Becoming a pest. 



1490 S. OBOVATUS Muhl. Spring Brook. 



1491 S AUREUS L. (Golden Ragwort.) Common. 



1492 S. BALSAMiTAE Muhl. Pocono Mountain. Prof. Porter. 



ARCTIUM L. (Burdock) 



1493 A. MINUS Bcrnh. (Common Burdock.) Very common. 



ECHINOPS L. (Globe Thistle) 



1494 E. SPHAEROCEPHA..US L. M. B. Fuller's farm. Dalton. Factoryv.Ue, 



George Griswold. 



CARDUUS L. (Plumeless Thistle) 



1495 C. CRiSPUS L. Hebrew Cemetery. Dunmore. Prof. R. N. Davis. 



CIRSIUM Hill. (Common or Plumed Thistle) 



1496 C LANCEOLATUM Hill. (Common or Bull Thistle.) Very common. 



1497 C. DISCOLOR Spreng. Frequent near Pittston. 



1498 C MUTicuM Michx. Monroe County. 



1499 C' PUMiLUM Spreng. (Pasture or Bull Thistle.) Common. 



1500 C. ARVENSE Scop. (Canada Thistle.) Very common. 



CENTAUREA L. (Star Thistle) 



1501 C. CYANUS L. (Bachelor's Button.) A frequent escape. 



CICHORIUM L. (Chicory) 



1502 C. INTVBUS L. (Common Chicory.) Waverly, Factoryville. Occa- 



sional elsewhere. 



KRIGIA Schreb. (Dwarf Dandelion) 



1503 K. viRGiNicA WiUd. Taylor woods. Dunmore, Elmhurst Boulevard. 



1504 K AMPLExTcAULis Nutt. (Cynthia.) Starlight, Stroudsburg, Camp- 



bell's Ledge. Not common. 



LEONTODON L. (Hawkbit) 



1505 L. AUTUMNAL.s L. (Fall Dandelion, Arnica.) Linen farm, Waverly. 



Infrequent. 



PICRIS L. 

 l^nfi P HiERACioiDEs L. (Hawkweed Picris.) Stroudsburg, Pro/. Por/^r. 

 \fo7 P. EcTioinKS L. (Ox-Tongue.) North Blakely street, Dunmore. 



TRAGOPOGON L. (Goat's Beard) 

 1508 T PORRiFOLius L. (Salsify. Oyster Plant.) An occasional escape. 

 15^ T. PRATENSis L. (Goat's Beard.) Has become qmte widely di.- 

 tributed. 



TARAXACUM Ludwig. (Dandelion) 



1510 T OFFICINALE Weber. (Common Dandelion.) Common everjrjvhere^ 



1511 t' ervthrospermum Andrz. (Red-Seeded Dandelion.) Monroe 



County, Prof. Porter. 



71 



