Cinquefoils (Potentilla)
Goup I. shrub
Group II. herbs with purple flowers
Group III. fls solitary on naked pedicels from the nodes of the us. creeping stems
Group IV. fls few to many, cymose
Group I.
shrubby cinquefoil (22. fruticosa - shrubby) wet meadows, bogs & shores, esp in calcareous soil; s to NJ
Group II.
marsh cinquefoil (23. palustris = of swamps, marshes) swamps, bogs & streambanks; s to NJ
Group III
| ..... | basal divided | AD | ..... | ..... | ..... |
| ..... | ..... | 3 lflts | 5 lflts | 5-7 lflts | 7-11 lflts |
| 1/2" wide fl | ..... | rough cinquefoil (6.norveiga) pale yellow fls; variety of habitats; s to SC | common cinquefoil (1.simplex) dry woods & fields; NF to AL | ..... | ..... |
| 3/4" | dwarf cinquefoil (2.canadensis) dry woods & fields; PEI, NS & NB to GA | ..... | ..... | creeping cinquefoil (3.reptans) native of Eurasia, intro in lawns, roadsides & waste places; NS to O and VA | ..... |
| 1" | silverweed cinquefoil (18.anserina) runners; moist or wet, open places; s to NY | coastal s.w. (19.pacifica) lvs tomentose beneath; wet sandy seacoasts, commonly in brackish soil; Lab to LI | ..... | ..... | ..... |
Group IV.
| ..... | lvs never tomentose | ..... | ..... | tomentose: | ..... |
| ..... | 3-foliate | 5-several foliate; pinnately compound | palmately compound | pinnately compound | palmately compound |
| white fls | three-toothed cinquefoil (20.tridentata0 rocks & gravelly shores, sometims at high elev; Greenland s to CN & in mts to GA | tall cinquefoil (21.arguta = sharp-toothed) dry woods & prairies; e QE to DE | ..... | ..... | ..... |
| yellow fls | rough cinquefoil (6.norvegica) brook cinquefoil (7.rivalis) pale yellow fls; MN to IL occ adventive further east |
..... | rough-fruited cinquefoil (9.recta = erect) dry soil
& waste pl; Eurp, frequent weed intermediate cinquefoil (11.intermedia) Eurasian, occ weed in dry soil & waste pls brook c. (7.rivalis = pertaining to brooks) |
Pennsylvania cinquefoil (17.pensylvanica) 3 varieties | silvery c. (10.argentea) dry soil & waste pl;
Eurasian occ weed intermediate cinquefoil (11.intermedia) |
Kalm. 11/30/1748. Remedies for Ague. Others boiled the leaves of the Potentilla reptans or of the P. Canadensis in water and made the patients drink it before the chill came on, and it is well known that several persons recovered by this means. Pp. 197.