OEGAKS OF EEPEODUCTION. 



Fig. 684. Fig. 685. 



307 



Fig. 684. Follicles of the Aconite {Aconitum).- 

 Pagony (PcBonia). 



-Fig. 685. Follicles of the 



lie loose in the carity of the fruit. This double fruit has there- 

 fore by some botanists received the distinctive name of Concep- 

 taculum. 



2. TheAchcsnium or achene is a superior, one-celled, one-seeded 

 fruit, with a dry indehiscent pericarp, which is separable from 

 the seed, although closely applied to it. Linnseus mistook some 

 of these achaenia for seeds, and called the plants producing them 

 gymnospermous (naked-seeded). Such fruits may be, however, 

 generally distinguished from seeds by presenting on some point 

 of their surface the remains of the style. This style is in some 

 cases very evident, as in the Clematis {fig. 643), and Anemone 



{fig. 686). Examples 

 Fig. 687. 



Fig. 686. 



may be seen in the 

 Clematis and Ane- 

 mone, as just noticed, 

 and in the plants of 

 the orders Labiate and 

 Boraginacese (fig. 687). 

 In rare cases we find 

 a flower producing but 

 a single achsenium. 



3. The EtcErin.— 



When the achaenia 



Vertical section borne by a single 



of an achaeuium of the fl^wpr arp sn rmmp 



Pasque Flower Unemone IIO wer are SO nume- 



Puisatiiia). The fruit is rous that they form 



said to he tailed iu this „^^„ <-V,.:.v, ^ c'v^^i 



instance in consequence ^^^^^ ^^^^ ^ Single 



of heing surmounted bj- whorl or series, they 



es/.^ASifSVuufJf constitute collectively 



Bugioss {Lycopsis). an eiario. Examples 



may be seen in the 



species ofBanuncuhis 



(fig. 528), and Adonis 



X2 



