152 RANUNCULACEAE. 



or compound; stipules none but the base of the petiole often 



clasping or sheathing; flowers regular or irregular; sepals 3-15, 



generally soon withering, often petal -like ; petals 3-15, or wanting; 



stamens numerous or few, hypogynous; carpels numerous or few 



or rarely solitary, separate, 1-celled, 1-many-ovuled ; endosperm 



present. 



Carpels numerous, 1-ovuled; fruit an akene. 



Leaves opposite. 190. Clematis, 152. 



Leaves alternate, whorled, or basal. 

 Cauline leaves three in a whorl. 



Styles short, glabrous or pubescent. 191. Anemone, 153. 

 Styles long, plumose. 192. Pulsatilla, 154. 



Cauline leaves alternate or none. 

 Petals none. 



Leaves ternately decompound. 193. Thalictrum, 154. 



Leaves simple, palmately lobed. 194. Trautvetteria, 154. 



Petals present. 



Sepals spurred; akenes in a long 



slender spike. 195. Myosurus, 155. 



Sepals not spurred; akenes in a 

 head. 

 Petals white ; akenes transversely 



wrinkled. 196. Batrachium, 155. 



Petals yellow; akenes not trans- 

 versely wrinkled. 197. Ranunculus, 156. 

 Carpels few, 2-many-ovuled; fruit a follicle or 

 berry. 

 Flowers irregular. 



Upper sepal spurred; petals 4. 198. Delphinium, 159. 



Upper sepal hood-like; petals 2. 199. Aconitum, 160. 



Flowers regular. 



Sepals spurred. 200. Aquilegia, 161. 



Sepals not spurred. 



Petals large; flowers solitary. 201. Paeonia, 161. 



Petals small or none; flowers solitary or 

 in racemes or umbels. 

 Leaves simple. 



Petals none; leaves crenate. 202. Caltha, 161. 



Petals linear-spatulate; leaves 



palmately parted. 203. Trollius, 162. 



Leaves compound. 



Carpels becoming berries. 204. Actaea, 162. 



Carpels becoming follicles. 



Flowers in racemes. 205. Cimicifuga, 162. 



Flowers not in racemes. 



Petals none; follicles ses- 

 sile or short-stalked. 206. Isopyrum, 163. 

 Petals 5-6, linear; folli- 

 cles long-stalked. 207. Coptis, 163. 



190. CLEMATIS. 



Perennial herbs, low and erect, or more or less woody vines, 

 climbing by the petioles; leaves opposite; sepals 4, rarely 3, or 



