79 



Beggar-ticks 

 Musk Thistle 

 Bachelor's Buttons 

 Knapweed 



Black Knapweed ; Centaury 

 Black Knapweed var. 



Daisy ; White-weed 



Sickle-leaved Golden Aster 



Chicory ; Blue Sailors 



Canada Thistle 

 Canada Thistle var. 



Field Thistle 

 Common Bull Thistle 



Pasture Thistle 

 Tickseed 



Tickseed 



Narrow-leaved Hawksbeard 

 Fire-weed 

 Canada Fleabane 

 Philadelphia Fleabane 

 Daisy Fleabane 



Hyssop-leaved Thoroughwort 



Boneset ; Common Thorough- 

 wort 

 Hairy Thoroughwort 

 Joe-Pye or Trumpet-weed 

 Rough Thoroughw^ort 



Galinsoga 



Many Headed Cudweed 



Bidcns zii'.gata Greene. Common. 



Carduus nutans L. Found several years ago. 



Centmirea Cyanus L. Occasional. 



Centatit'ca Jacca L. Found several years 

 ago. 



Coitaurea nigra L. Very common. 



Centaurea nigra var. radiata DC. Not as 

 common as type. 



Chrysanthemum Leucanthemum L. Common. 



Chrysanthemtim tdiginosum Pers. Found one 

 year. 



Chrysopsis falcata (Pursh) Ell. One sta- 

 tion known for many years, but has now 

 disappeared. 



Cichoriitm Intybns L. Very common. Oc- 

 casionally rose pink. 



Cirsium arvense (L.) Scop. Very common. 



Cirsium arvense var. z'estifuni Wimm. & 

 Grab. 



Cirsium discolor (Muhl.) Spreng. Common. 



Cirsium laiiceolatum (L.) Hill. Fairly 

 common. 



Cirsium piimihim (Nutt.) Spreng. 



Coreopsis lanceolata L. Escaped from cul- 

 tivation ; very freely of late. 



Coreopsis tincforia Nutt. Found once. Ap- 

 parently an escape. 



Crepis tectorum L. Occasional. 



Erechtites hieracifolia (L.) Raf. Occasional 



Erigeron canadensis L. Common. 



Erigeron philadelphiciis L. Fairly common. 



Erigeron ramosns (Walt.) BSP. The com- 

 monest species. Sometimes rayless. 



Erigeron pusillus Nutt. Apparently uncom- 

 mon. 



Eupatorinni Jiyssopifolinni L. Found in 

 1916. Apparently restricted. 



Ettpaforiiini pcrjoliatum L. Fairly common. 



Eupatoriiiin pubescens Muhl. Occasional. 



Eupatorinm purpureiini L. Not common. 



Eupatoriuni verbenaejolium Michx. Not 

 common. 



Galinsoga parviflora var. hispida DC. Com- 

 mon. Cultivated soil. 



Gnaphaliiiin polyccphaliiiu ^lichx. Occa- 

 sional. 



