Flowers and Flower Clusters 



239 



Fig. 144. Terms used in describing flowers. When the stamens, 

 petals, and sepals are inserted on the receptacle below the pistil (A), 

 they are said to be hypogynous; when united around the ovulary 

 {B), they are perigynous; and when united above the ovulary (C), 

 they are described as epigynous. The position of the ovulary in A 

 is superior — that is, above the insertion of the stamens and perianth ; 

 in C the ovulary is infer i or —thsit is, below the insertion of the perianth. 



Fig. 145. Terms used in describing ovularies : A, one-celled, with 

 ovules on three parietal placentas ; B, three-celled, with ovules on 

 three central placentas ; C, one-celled ovulary with free central pla- 

 centa. The surface to which the ovules are attached is the placenta. 



A ^'^ B 1^ C 



Fig. 146. Pistils formed of one, three, and five carpels, respectively. 



