REPORT OF THE STATE BOTANIST 1905 1 7 



Pileus 1-1. 5 inches broad; stem 1-1.5 inches long, 2-4 lines thick. 

 Woods. Pittsford, Monroe co. September. F. S. Boughton. 



The color of the stem of this species indicates a relationship with 

 such species asCortinarius sanguineus and C . cin- 

 nabarinus. The discoverer of the species describes the colors 

 of the cap and gills as very similar to those of Clitocybe 

 ochropurpurea. The red stem and violet or purplish 

 violet gills of the young plant make it a beautiful and very attrac- 

 tive species. 



Crataegus acuminata Sarg. 1 



The acuminate thorn is closely related to C.streeterae 

 and C.glaucophylla, but it may be separated from the first 

 by the absence of wrinkles from the leaves, and from the second by 

 the absence of glaucous hues from them. 



Crataegus ambrosia Sarg. 

 The ambrosial thorn is so closely allied to the Hall thorn that they 

 are not readily distinguished from each other when in flower, but 

 with the full development of the leaves and fruit they are easily 

 separated, the leaves being broader and the fruit of the ambrosial 

 thorn being much larger and fewer in a cluster. It also persists 

 later in the season. The bushes are red with fruit to the end of 

 November. 



Crataegus asperifolia Sarg. 



The roughish-leaved thorn is similar in its general characters to the 

 rubicund thorn, C. rubicunda, from which it may be sepa- 

 rated by its glabrous calyx tube, which is also less reddish, more 

 glandular calyx lobes and shorter pointed leaves. The petioles 

 in our specimens are also generally shorter. The fruit of typical 

 C. asperifolia is described as having yellow flesh, but in our 

 specimens it becomes tinged with red late in the season. 



Crataegus beckiana Sarg. 



The Beck thorn in some of its characters is suggestive of C . 

 rhombifolia , but it is a much larger treelike shrub with 

 thicker leaves, glabrous calyx tube and with large drooping clusters 

 of fruit. 



Crataegus caesariata Sarg. 



The hairy thorn belongs to the group Coecineae and when in 

 flower it might be taken to be a form ofC. cocci nea. Its 



x The descriptions of this and other new species of this genus will be found 

 in the chapter on species of Crataegus found within 20 miles of Albany. 



