Geraniums (Geranium)
| ..... | basal lvs | ..... | no basal lvs: | ...... | ..... |
| ..... | 5-7 segments | more deeply cleft | 3-5 cleft | 5-7 cleft | 5-9 cleft |
| 1)true perennial from a stout, caudex-like rhizome; pet 12-20 mm; anthers 2mm or more | wild geranium (1.maculatum) pedicels, calyx & fr:
not glandular; pink fls; common in woods bloody cranesbill (1a.sanguineum = bloody, the fls) rare |
meadow crane's bill (2.pratense = of meadows) pedicels, calyux & fr: finely glandular; blue-violet fls; occ Eurasian escape | ..... | ..... | ..... |
| 1) annual to short-lived perennial, commonly taprooted, pet seldom over 12mm; anthers to 1mm | ..... | ..... | herb robert (3.robertianum) damp rich woods; Old World, widely naturalized | ..... | ..... |
| 4) seps terminating in an awl-shaped tip or awn notched & in pairs; pet seldom over 12mm | ..... | ..... | ..... | ..... | ..... |
| 5) pedicels at maturity not more than twice as long as the cal | ..... | ..... | ..... | (5.dissectum) Eurp intro; MA to GA | Carolina c.b. (4.carolinianum) dry, barren or sandy soil & waste places; ME to FL |
| ..... | basal lvs | ..... | no basal lvs: | |
| ..... | reniform; 5-7 cleft | rotund; 7-9 cleft | rotund/reniform 5-9 cleft | 3-5 cleft |
| 5)pedicels at maturity more than twice as long as the cal | ..... | ..... | ..... | ..... |
| 7) pedicels spreading-hairy, eglandular; mature stylar beak ca 1mm | ...... | ..... | Siberian c.b. (6.sibiricum) Asian intro | ..... |
| 7) pedicels either strigose or glandular-villous; stylar beak 3-5mm | longstalk c.b. (7.columbinum) European weed; NY to GA | ..... | ..... | Bicknell's g. (8.bicknellii) open woods & fields; NF to NY, PA |
| 4) sep blunt to merely acute, or terminating in a minute callous point | ..... | ..... | ..... | ..... |
| rotund basal lvs; sepals blunt to merely acute; stylar beak 2-5mm | ..... | reniform dove's foot c.b. (9.molle) Eurp, now widespread as a weed | ..... | ..... |
| stylar beak very short or none | ..... | small-flowered c.b. (10.pusillum) Eurp species, now estab in fields & waste places | ..... | ..... |
The cultivated geranium is Pelargonium, a tropical genus especially well developed in South Africa.
Herb robert (G. robertianum) has a disagreeable odor. It is variously reported to have been named for St. Robert of Molesme, whose festival date in April occurs at about the time the flowers bloom in Europe, or for Robert Goodfellow, known as Robin Hood.