348 DR. HOOKER ON THE DISTRIBUTION OF ARCTIC PLANTS. 



F. brevifolia, Br. Brown says of tliis (Flora of Melville Island), "forsan nimis affinis 

 F. ovincB." 



Bkomus inermis, Leys., and imrgmis, L., are both kept distinct from ciliatus, L., by 

 Grisebacli. I am indebted to Munro for their identification, together with that oi pictus, 

 mihi, which is undoubtedly ciliahis, L. Asa Gray refers purgans to ciliatus. Durand 

 mentions this plant as a native of Greenland, lat. G5°, under the name of B. Kalmii ? 

 according to Dr. Torrey. 



Teiticum oiolaceum, Horn. Fries keeps this distinct ; but Blytt suspects it to l)e a 

 variety of T. caniuuin. Andersson observes that it is an alpine and arctic plant, not 

 uncommon in Greenland, altogether intermediate between cmiimmi and repiens, and con- 

 cludes "nonne attamen modificatio alpina?" 



Since the printing of the foregoing paper, I have received, through the kindness of 

 Dr. Asa Gray, particulars of the discovery of Callnna vulgaris near Tewksbury, Massa- 

 chusetts, by Mr. Jackson Dawson, occurring rather abundantly over about half an acre 

 of boggy ground, amongst various strictly American plants. This tends to confirm the 

 statement of De la Pylaie, that Calluna is an inhabitant of Newfoundland. 



J. D. Hooker. 

 Keii\ Oct. 11, 1801. 



Erratum. 



At (). 31 7, line 8, ufter " regions" ndd "of Eiu'opc and Asia." 



