46 Morten P. Porsivo. 
196. Potentilla (Argentina) anserina LL. coll. 
The opinions, as to the systematical value of the Greenlandic 
forms of this collective species, vary very much. Here | follow the 
classification given by the last monographer of the genus Tu. Worst 
(Monographie der Gattung Potentilla 1908). 
I. Folia subtus dense pilis longis adpressis tomentum yerum 
obtegentibus argenteo-sericea, nitentia, sepala externe ple- 
rumque 3 plurifida, raro integra. 
Here a series of varieties, for instance, var. rulgaris HAYNE. 
II]. 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 plant partes aut 
modice pilosee, aut glabree. 
|. Planta robusta, foliis maximis usque 30 cm et ultra 
longis, multijugis; tomentum follorum intermixtis pilis 
sericeis breyvibus micans. 
var. grandis LEHM. 
New Foundland, ? Greenland. 
2. Planta mediocris vel parva, foliis 5—6 (—10) em longis, 
3—5 (—7) jugis, foliolis superioribus 1—2 em 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 WorMskJ. 
(= Argentina Egedii Ryvs). 
West Greenland to ca. 71° N. Lat. 
Of the forms accepted by Tu. Wo.r we have, as far as I 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. 
