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. 



' 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. 



