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2. Pzonia.—Sepals 5, herbaceous, carpidia 
distinct from the beginning. 
3. Aquilegia.—Sepals petaloid. Petals fun- 
nel-shaped, calcarate. 
B. Ovaries 1-ovulate, indehiscent. Fruit, akenes. 
a. Aistivation of sepals imbricate. 
1. Ranunculus.—Petals unguiculate, claws 
shorter than the lamina, a nectarium 
near each claw. 
2. Myosurus.—Claws of the petals longer 
than the lamina. 
3. Anemone.—Sepals petaloid. Petals 0. 
Thalamus convex, conical. 
4. Thalictrum. Sepals petaloid. Petals 0. 
Thalamus flat, discoid. 
b. Aistivation of sepals valvate. 
1. Clematis.-—Sepals 4, petaloid. Petals 0. 
DIDYNAMIA. 
{. Gymnospermia. 
A. Stamens and style enclosed. An interrupted 
ring of hairs in the corolla below the in- 
sertion of the stamens. 
1. Marrubium.—Akenes flat at their tops. 
B. Style always exserted. An uninterrupted 
ring of hairs in the corolla below the inser- 
tion of the stamens. 
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