SPERMATOPHYTA. 57 



ROSACES (ROSE FAMILY). 



Physocarpus Maxim. Nine-bark. 



opulifolius (L.) Maxim. Escaped. 



Worcester. Miss E. J. Seaver. 

 Spiraea (Tourn.) L. 



latifolia (Ait.) Borkh. Meadow-sweet. 



In pastures and by roadsides, common, 

 tomentosa L. Hardback. In low grounds, common. 

 Pyrus (Tourn.) L. 



Malus L. Wild Apple. 



Escaped, on the margin of woods, 

 arbutifolia (L.) L. f. Chokeberry. 



In huckleberry pastures, common, 

 melanocarpa (Michx.) Willd. 



In swamps and wet woods, 

 americana (Marsh.) DC. American Mountain Ash. 



Mount Wachusett. 

 Aucuparia (L.) Ehrh. European Mountain Ash. 



Spontaneous at Henshaw Pond, Leicester. 

 Amelanchier Medic. Juneberry. 



canadensis (L.) Medic. Shadbush. 



In dry woodlands, common. 

 Crataegus L. Hawthorn, 

 punctata Jacq. 



Worcester. 



coccinea L. In rocky woods, 



rotundifolia Moench 

 pruinosa (Wendl.) K. Koch. 



See Rhodora, 1903, p. 54. 

 pruinosa, var. conjuncta (Sarg.) Eggleston. 

 See Rhodora, 1903, p. 58. 



