POLYANDRIA MONOGYNIA. 119 



* * * Petals numerous. 



161. NUPHAR. Berry coated, of many cells ; petals from the re- 

 ceptacle, furrowed and honey-bearing at the back. 



II. POLYGYNIA. 



164. THALICTRUM. Calyx ; petals 4 or 5, imbricated ; seeds 



without any appendage, 



163. ANEMONE. Calyx 0; petals 5-15, imbricated; seeds nume- 

 rous. 



167. CALTHA. Calyx 0( petals 5, or more; nectary 0; follicles 

 5-10. 



166. TROLLIUS. Calyx 0; petals 5-15, deciduous ; nectaries flat- 

 tened ; follicles numerous. 



165. RANUNCULUS. Calyx of 5 leaves ; petals 5, or more, with 



nectaries in their claws ; seeds numerous, naked. 



I. MONOGYNIA. 



158. CHELIDONIUM. 



1. C. majus, stem smooth, branched, with orange-coloured 

 juice ; leaves deeply pinnatifid ; flowers umbellate, yellow. Com* 

 mon Celandine. 



Hab. " Dike north of the Magdalen Field farm-house, 

 sparingly," Thomp. Occasionally to be seen in cot- 

 tage gardens. May, June. If. 



159. GLAUCIUM. 



1. G. luteum, stem smooth ; radical leaves lyrate, those of the 

 stem clasping, wavy ; flowers large, yellow ; pod roughish with 

 minute tubercles, a foot long. Yellow Horned-poppy. 



