64 



GENUS ARTEMISIA. 



cited in table 4, as well as of all the globularia material available. Ledebour (Fl. 

 Ross. 2:588, 1844-46) describes both as having pilose corollas. The shape of the disk- 

 corollas is perhaps of greater significance. There seems to be a tendency in all of these 

 dwarf subspecies towards a sudden enlargement of the throat, as shown in plate 3, this 



Table 4. — Variation in the subspecies of Artemisia norvegica. 



No. of 

 bracts. 



No. 

 of ray- 

 flowers. 



No. 

 of disk- 

 flowers. 



Typical A. norvegica: 



Kongsvold, Norway. 

 Dovre, Norway .... 



Do 



Ahlberg, Norway. . . 

 Doorenses, Norway. 



Average 



Gr 



Gr 



Gr 



13388 US 



US 



Subspecies saxatilis: 



Disenchantment Bay, Alaska. 



Nome, .\laska 



Silver Bow Basin, Alaska. . . . 

 White Pass, Yukon, Alaska. . 



Vixen Inlet, Alaska 



Kuiu Island, Alaska 



Short Bay, Alaska 



Upper Tnickee, Calif 



Do 



Yosemite Park, Calif 



Mineral King, Calif 



Farewell Gap, Calif 



Little Kern, Calif 



Clear Creek, Colo 



Ethel Peak, Colo 



91242 UC 

 91245 UC 

 29727 UC 



SF 

 204365 UC 

 204501 UC 

 91241 UC 

 193585 UC 

 91244 UC 

 29704 UC 



91243 UC 

 63517 UC 

 91240 UC 

 29773 UC 

 69460 UC 



Average . 



Subspecies heterophylla: 



Bernard Harbor, Can 



Do 



Sarauna, Bering Island 



Mount Rainier, Washington. 



NY 



NY 



US 



29776 UC 



Subspecies globularia: 



St. George Island, Bering Sea 

 St. Matthews Is., Bering Sea. 



Do 



Do 



Do 



St. George Island, Alaska 



Do 



St. Paul Island, Alaska 



Gr 

 Gr 



NY 

 Gr 

 73910 UC 

 SF 

 SF 

 SF 



Average . 



Subspecies glomerala: 

 St. Lawrence Bay. 



Do 



Bering Strait 



Gr 



Phila 



Gr 



Average . 



36 



73(!) 



73 



34 



46 



64 



66 



' The disk-flowers often fall out of the involucres in dried specimens. For this reason the lower numbers are not reliable. 

 This applies especially to the last two subspecies, of which the material is rather poor. 



