96 Morten P. Porsizto. 
196. Potentilla (Argentina) anserina L. coll. 
The opinions, as to the systematical value of the Greenlandic 
forms of this collective spécies, vary very much. Here I follow the 
classification given by the last monographer of the genus Tn. Wore 
(Monographie der Gattung Potentilla 1908). 
|. Folia subtus dense pilis longis adpressis tomentum verum 
obtegentibus argenteo-sericea, nitentia, sepala externe ple- 
rumque 3 — plurifida, raro integra. 
Here a series of varieties, for instance, var. rulgaris HAYNE. 
[I]. Folia aut subtus glaberrima, aut tomento vero niveo 
obtecta, non nitentia vel super nervos pilis brevibus sericeis mican- 
tia (prevalente semper tomento opaco); sepala externa fere semper 
integerrima, rarissime 2- aut 3-fida. 
A. Folia et sepala subtus tomentosa, relique plantw# partes aut 
modice pilose, aut glabre. 
1. Planta robusta, foliis maximis usque 30 em et ultra 
longis, multijugis; tomentum foliorum intermixtis pilis 
sericeis brevibus micans. 
var. grandis LEHM. 
New Foundland, ? Greenland. 
2. Planta mediocris vel parva, foliis 3—6 (—10) em longis, 
3—bd (—7) jugis, foliolis superioribus 1—2 cm longis, tomen- 
tum foliorum omnino opacum, ad summum quandoque 
secus nervos pilis sericeis paucis submicans. 
var. groenlandica SER. 
West Greenland to ca. 67 
B. Folia et sepala utrinque glaberrima sicut plerumque 
relique plant# partes. 
var. Egedit WorRMSKS. 
(= Argentina Egedii Ryve). 
West Greenland to ca. 71° N. Lat. 
Of the forms accepted by Tu. Wo Fr we have, as far as | can see, 
the following: 
1) var. vulgaris Hayne (variable, may be divided into several sub- 
varieties and forms). Not arctic, though occurring in South 
Greenland (if identical with P. anserina var. communis (LEHM) 
LANGE. 
