102 



EriocaiUon septangiilare. The genus Eriocaiilon^ with the 



exception of E, septangulare in the lakes of the isles of Skye, 

 and a few of the neighboring^ Hebrides, and of Connemara, 



in Trehind, is wholly wanting in Europe and Russian Asia, The 

 genus extends over North and South America almost from pole 

 to pole, and is well represented in tropical Asia, Africa and 

 Australia, (Bcntham). Withering (1787) gives the stations of 

 E. septangulare m the isle of Skye, with great detail, stating that 

 it was discovered in two or three snmll fresh water lochs in 1768. 

 In one of these he says that it occurred in such abundance that 

 '* the white fibres of the roots are thrown on the edges of the 

 loch as sea-weeds on the sea-shore." 



K. B. Clay POLE- 



Botanical Notes. 



Subularia aquatica, L. — Dr. J. W. Chickering, under date 

 of November i6th, 1S89, writes as follows : "In 1858, I 

 discovered Subularia in abundance about two miles west from 

 Portland, Me., along the hne of the old Portland and Sebago 

 Canal, on muddy banks caused by the washing out of the canal, 

 and collected a quantity. Two or three years after, I visited the 

 locality, and although the environment was in all its conditions 

 unchanged, I could not find a trace of it." 



David F. Day. 



ri 



Note upon Ailanthus. — In connection with Mr. A. F. Wood*s 

 observations on the Cottonwood, reviewed in the February RuL- 

 LETIN, page 43, it may be said that during the past sea- 

 son repeated observations were made upon the Ailantluis, {Ailan- 

 tJnis glandulosus, a well-known shade tree in the h^astern 

 States, in order, if possible, to obtain some means by which to 

 distinguish the staminate from the pistillate plants while they are 

 seedlings. As yet nothing has been discovered in wood or bark, 

 bud or leaf, that will give any clue as to the sex. There are 

 great differences as to time of leafing and defoliation between 

 trees of this species growing apparently under the same circum- 

 stances, but the sex seems to have nothing to do with this. In 

 fact, It is not uncommon for species of trees with perfect flowers 



