1914] The Ottawa Naturalist. 87 



several Myosurus species native to America in the Great Basin 

 and on the Pacific slope of the continent; and when "limestone 

 shingle" is named as another environment of the Belleville 

 Myostirus, the mind of the widely travelled student of these 

 plants is reminded of the habitat of certain far western mem- 

 bers of the genus. So also does the Belleville rocky past^ire 

 locality; for that should mean on the rocks themselves, either 

 in their seams and crevices or on top of them, where there is 

 little depth of earth, and some considerable degree' of aridity; 

 for as far north as eastern Ontario, all, except the rocks of a 

 pasture, is occupied by perennial grasses, into the sod of which 

 no Myosurus or other annual finds a foothold. In a word, 

 the whole story of the Ontario locality for these plants points 

 to the derivation of this colony from the far westward. More- 

 over, between the northwestern shore of Lake Ontario and those 

 far-away Myosurus stations of the Southern States, there is 

 practically no commercial traffic at all; whereas, by means 

 of the Canadian Pacific Railway System, there is a ^'ery direct 

 and constant inter-commtmication between all British Columbia 

 and even eastern Ontario. 



Long after his having discovered that Belleville colony of 

 these plants, Professor Macoun found Myosurus on Vancou- 

 ver Island, and I find his remark on this also very interesting 

 It occurs in his supplement to the volume already quoted, 

 page 479. Listing it there, still under the name Myosiims 

 minimus, he says: "It is extremely probable that the British 

 Columbia form is a distinct species." This is a plain intimation 

 that while still regarding the eastern plant as the real original 

 M. minimus and native there, he saw discrepancies between 

 the two, and suspected the Vancouver Island plant to V)e really 

 new and nameless. Into these matters the present writer 

 intends making further and critical research, the restilts of 

 which may be presented later. 



THE GENUS A N TEN N ARIA IN GREENLAND. 



By Morten P. Porsild. 



The Antennarias of Greenland have for a long time — by 

 Joh. Lange and later authors — been determined as (1) .4. 

 alpina (L.) Gaertn., (2) .4. alpina var. glabrata J. Vahl, (3) .4. 

 dioica var. hyperhorea Don, to which L. K. Rosenvinge has 

 added (4) .4. alpina var. intermedia Rosenv. A closer study 



