1916] Wool- waste Plants at Westford 143 



of the Alleghenies, but a casual and uncritical reading (by how very 

 many more than myself!), coupled with a general and not an intimate 

 knowledge of the plants of Maine, had allowed this to pass without 

 comment. The author citation (which on mere reading would of 

 course escape all but the specialist) makes it perfectly clear that the 

 plant referred to is J uncus brachycephalus. But that possibly others, 

 hapless, referring to " J uncus brachycarpus" at Fort Fairfield, Maine, 

 may not have the excuse that the error was never corrected, let this be 

 put down: 



Rhodora, Vol. 12, page 112, line 28; for brachycarpus read brachy- 

 cephalus. 



Academy of Natural Sciences of Philadelphia. 



Wool-waste Plants at Westford, Massachusetts. — The fol- 

 lowing plants found during the summer of 1915, mostly in a wool- 

 waste dump, have been identified at the Gray Herbarium by Dr. 

 B. L. Robinson and J. F. Macbride. 



It is the custom of the Worsted Co. to obtain all of their wool and 

 camel's hair from southern Europe and Asia. Two years ago, when 

 it was difficult to obtain foreign wool, a small amount of United States 

 wool was purchased. Yet by careful inquiry I do not learn that any 

 wool-waste has been placed in this dump for five years. This may 

 raise a question in regard to the introduction here of some plants 

 which are natives of this country, when only foreign plants would be 

 expected. For instance, I found two mallows, Anoda triangularis 

 (Willd.) DC, and Sphaerakea Munroana (Dougl.) Spach., the former 

 a native of the southwestern United States and the latter common in 

 the Rocky Mountains and portions of the Northwest. 



In Rhodora, xv. 172 (1913) I reported Erodium ciconium L. from 

 this dump. Last summer I collected a rather poor specimen with only 

 imperfect fruit, which was determined for me as probably a form 

 of Erodium ciconium (L.) Ait., var. tenuisectum Nym. There is no 

 very authentic material of this variety in the Gray Herbarium and 

 my specimen differs slightly from the descriptions available: The 

 typical form and var. tenuisectum Nym. are covered with a fine glandu- 

 lar pubescence while my specimen is only puberulent without glandu- 

 lar hairs. 



