2 RANUNCULACEiE. (CROWFOOT FAMILY.) 



Division I. POLYP^TALOUS EXOGENOUS PLANTS. 



Floral envelopes double, that is, consisting of both calyx and co- 

 rolla ; the petals not united with each other.* 



Order 1. RANUJVCUIiACE^. (Crowfoot Familt.) 

 Herbs (or woody vines) with a colorless acrid juice, polypetalous^ or apeia* 

 hits with the calyx often colored like a corolla, hypogynous ; the sepals, petals, 

 nu7nerous stamens, and many or few (rarely single) pistils all distinct and 

 unconnected. — Flowers regular or irregular. Sepals 3-15, Petals 3- 

 15, or wanting. Stamens indefinite, rarely few: anthers short. Fruits 

 either dry pods, or seed-like (achenia), or berries, 1 - several-seeded. 

 Seeds anatropous, with fleshy albumen and a minute embryo. — Stipules 

 none. Leaves mostly dissected, their stalks dilated at the base. (A large 

 family, mostly of acrid plants, some of them acrid-narcotic poisons.) 



Synopsis of the Genera. 



TniBE I. CliBMATIDK^. Sepals valrate in the bud, or with the edges bent inwards. 

 Petals none, or small and stamen-like. Acheuia numerous, tailed with the feathery or 

 hairy styles. Seed solitary, suspended. — Vinos : leaves all opposite. 



1. ATKAGENE. Petals several, small, and resembling sterile stamens. 



2. CLEMATIS. Petals none. 



TiUBB n. ANBItlONE^. Sepals imbricated in the bud. Petals none, or very small 

 and stamen-like. Achenia numerous or several. Seed solitary. — Stem-leaves often op- 

 posite or whorled, forming an involucre. 



* Seed suspended. 

 8. PULSATILLA. Achenia bearing long plumose tails. Petals resembling sterile stamens. 

 4. ANEMONE. Achenia merely pointed, nmnerous, not ribbed nor inflated. Involucre re- 

 mote from the flower, and resembling the other leaves. 

 6. HEPATICA. Achenia several, not ribbed. Involucre close to the flower, of 3 simple leaves, 

 and resembling a calyx. 



6. THALICTBUM. Achenia 4-10, ribbed, grooved, or inflated. Involucre none, or leaf-like. 



* * Seed erect. 



7. TKAUTVETTERIA. Achenia inflated and 4-angled. Involucre none. 



Tribe III. RAIVUXCUIiB.^. Sepals imbricated in the bud. Petals evident, oftan 

 with a scale or pore inside. Achenia numerous. Seed solitary. 



8. RANUNCULUS. Sepals not appendaged. Achenia in a head. Seed erect. 



9. MYOSURUS. Sepals spurred at the base. Achenia in a long spike. Seed suspended. 



TniBE rv. HSI<IiEBORIN!B.^. Sepals imbricated in the bud, deciduous, rarely 

 persistent, petal-like. Petals {nectaries of the earlier botanists) tubular, irregular, or 

 2-lipped, often none. Pods (follicles) few, rarely single, few -se feral-seeded. — Leaves 

 all alternate. 



# I'lower regular. Pods several-seeded. Herbs. 



10. ISOPYRUM. Petals none (in our species). Pods few. Leaves compound. 



11. CALTHA. Petals none. Pods several. Leaves kidney-shaped. 



* Tn many exceptional cases some species or some genera belonging to polypetalous orders 

 are destitute of petals ; as Clematis, Anemone, our Isopyrum, and other plants of the Crow- 

 foot Family. 



