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plants of drier habitats; NOT [a
decumbent plant of aquatic and marshy habitats] |
 |
plant herb-like, not woody based;
NOT [plant shrubby or with woody bases] |
 |
annual or biennial plant without
perennial rootstocks; NOT [perennial plant with stout rootstocks, often
showing old bases of leaves] |
 |
plant without runners; NOT [low creeping
plant with runners] |
 |
plants rarely glandular-hairy; NOT
[plants glandular-hairy] |
 |
basal leaves pinnate; NOT [basal leaves
trifoliolate or 5-9 digitate] |
 |
stem-leaves several; NOT [stem-leaves
0-2] |
 |
stem-leaves pinnate; NOT [stem-leaves
subdigitate] |
 |
lower stem-leaves with 7-11 leaflets; NOT
[lower stem-leaves with 5-7 leaflets], NOT [lower stem-leaves with 3
leaflets] |
 |
leaflets sparsely hairy, mostly on veins;
NOT [lower surface of leaves densely white tomentose, frequently
overlain with sericeous hairs], NOT [leaves densely woolly-hairy below,
conspicuously veined above] |
 |
leaflets serrate or lobed, generally
divided only half-way to midrib or less; NOT [leaflets divided almost to
the midrib, or pedately divided or pinnatisect with narrow segments] |
 |
leaflets crenately lobed; NOT [leaflets
serrate-dentate] |
 |
inflorescence many-flowered and leafy |
 |
flowers in cymes; NOT [flowers solitary
on naked peduncles, mostly from the nodes of stolons] |
 |
flowers yellow |
 |
petals about equalling sepals; NOT
[petals much longer than sepals] |
 |
styles arising near top of ovary; NOT
[styles nearly basal in origin] |
 |
styles tapering from base; NOT [styles
slender-fusiform] |
 |
achenes ribbed; NOT [achenes smooth] |
 |
achenes not hairy |
 |
achenes with a corky enlargement on one
side
|