| terrestrial plants; NOT aquatic plants,
NOT creeping mud plants, leaves NOT mostly floating, leaves NOT
submersed |
| stems usually erect, upright |
| plants larger than 5 cm high |
| leaves all, or in part, deeply lobed to
compound; NOT simple, NOT entire, NOT merely toothed |
| basal and cauline leaves all deeply
incised or divided into distinct segments, the cauline smaller or with
fewer segments, or with shorter petioles; NOT [basal and cauline leaves
distinctly unalike; some or all of the basal leaves merely toothed (or
entire), most of the cauline deeply cleft and sessile or subsessile] |
| basal leaves lobed almost to the base,
or divided; NOT crenate, NOT lobed to almost halfway |
| basal leaves ovate to rhomboid, or
reniform; NOT [elliptic to linear and not deeply divided] |
| terminal segment of the larger leaves
stalked; NOT sessile |
| leaves trifoliate; NOT divided into
many narrow segments |
| stem and inflorescence leaves on
well-developed petioles; these leaves NOT sessile, NOT subsessile |
| flowers larger than 6-8 mm across |
| sepals usually 5; NOT 3 |
| sepals reflexed at base; NOT spreading,
NOT incurved |
| sepals 3.5-5 mm long |
| petals equaling or longer than the
sepals; NOT shorter than the sepals |
| petals 4-7 mm long; NOT 7-15 mm |
| petals yellow; NOT white, NOT white
with some yellow at base |
| heads of achenes ovoid to globose; NOT
cylindric-oblong |
| achenes glabrous; NOT pubescent |