1()() NEW YORK STATE MUSEUM 



Carduus odoratus (Muhl.) X*orter 

 C n i c u s p u m i 1 u s Torr. 



Pasture thistle. Fragrant thistle 

 Fields. Frequent. July-Angust. 



Carduus muticus (Michx.) IN^rs. 

 Cniciis muticus Pursh 

 Swamp thistle 

 Swamps and along streams. Common. August. 



Carduus arvensis (L.) Robs. 

 Cnieus arvensis Hoffm. 

 Canada thistle 

 Abundant in fields and waste places. Jnly-Septoinbcr. 



EXPLANATION OF PLATES 



PLATE M 



Hygrophorus subrufescens Pk. 

 Reddish Hygrophorus 

 L 2 Two plants with convex cap 

 3, 4 Two plants with margin of cap curved upward 



5 Vertical section of the upper part of a mature plant 



6 Four spores X 400 



Collybia uniformis Pk. 

 Uniform Collybia 



7 Cluster of four plants growing from the upper surface 



of a piece of wood, two of them young, two mature 



8 Cluster of three mature plants growing from the lateral 



surface of a piece of wood 

 9-11 Three mature plants, one with curved stem 



1 2 Vertical section of the upper ])art of a mature plant with 



fully expanded cap 



13 Transverse section of a stem 



14 Vertical siection of the upper part of a plant with convex 



cap 



15 Transverse section of a compressed stem 

 10 Four spores X 400 



