CALLUNA VULGARIS IN AMERICA. 55 
volume). should be corrected. Zostera marina was the species re- 
ported by Mr. Syme, as found on the coast of. Orkney, which by some 
mischance has been changed into Zostera nana in transcribing the list. 
The most northerly localities certainly ascertained for Z. nana in Bri- 
tain are in the counties of Northumberland, Ayrshire, and Argyleshire. 
—Hewert C. Watson. 
ON THE, OCCURRENCE OF CALLUNA VULGARIS 
I} ERICA. 
In an early number of the * Journal of Botany’ (Vol. I. p. 24), was 
reprinted a notice, by Professor Asa Gray, extracted from * Silliman’s 
Journal,’ 1861, p. 290, on the occurrence of the common Ling (Cal- 
luna vulgaris) in Massachusetts, United States. In that notice it was 
stated, that Mr. Jackson Dawson had found the Ling about Tewkesbury, 
covering about half an aere of rather boggy ground; and Professor A. 
Gray added that it might have been introduced, unlikely as it would 
seem, or, like Scolopendrium officinarum, Subularia aquatica, and Mur- 
silia quadrifolia, be a species of the Old World, so sparingly repre- 
sented in the New as to be known only at single stations. A speci- 
men of this Calluna was sent to England, and Professor Oliver, in 
réprinting the above notice (Nat. Hist. Rev. n. vii, July, 1862, 
p. 946), remarked: ** We have seen à specimen forwarded to Dr. 
Hooker. It does not seem to differ in the least from the common 
Ling of our moorlands.” 
In Professor A. Gray’s note it was also stated, that about thirty 
years ago an “ English surveyor” had found the Calluna. in the m- 
terior of Newfoundland, and that still earlier, De la Pylaie enume- 
rited it ag a native of that island. But in the Boston Natural History 
Society "Proceedings, 1862, February, and 1863, May, Mr. Sprague 
remarked that he can find nothing of De la Pylaie's in print referring to 
the occurrence of this plant in Newfoundland, and that he has been 
informed by Mr. Durand that the Massachusetts Ling is a peculiar 
form, differing from the European in its larger and more globular 
flowers £I Y. 4.19! 4 1205 : 
The doubt stil lingering about the occurrence of this plant m 
America is dispelled by a lucky find of. Mr. Hewett C. Watson. 
