ITS KINDS. 



313 



566-573). 



applicable only to fruits produced by the ripening of a one-celled 

 pistil; as the plum, peach (Fig. 562), &c. ; but it is extended in a 

 general way to such fruits with two or more bony 

 cells enclosed in pulp, as that of the Dogwood, &c. 



600. The raspberry and blackberry (Fig. 564) 

 are composed of a great number of miniature stone- 

 fruits, or drupelets, as they might be called, in struc- 

 ture resembling cherries (Fig. 565), aggregated upon 

 an elongated receptacle. 



601. Dry Fruits may be either dehiscent or indehis- 

 cent (589). Of indehiscent dry fruits one of the 

 simplest kinds is 



602. The Achenium, or Akenc (Fig. 



This includes all one- 

 seeded, dry and hard, 

 indehiscent and seed- 

 like, small fruits, such as 

 are popularly taken for 

 naked seeds. But that 

 they are true pistils or 

 ovaries ripened is evident from the styles or stigmas they bear, or 

 from the scar left hy their fall ; and a 

 section brings to view the seed within, 

 provided with its own proper integuments. 

 The name has been restricted to the seed- 

 like fruits of simple pistils, as those of 

 the Buttercup (Fig. 566, 567), Anemone, 

 Clematis, and Geum (where the persist- 



FTG. 564. Magnified rertical section of half of a blackberry. 505. Section of one cf th« 

 grains, or drupettts, more magnified. 



FIG. 5G6 Achenium of a common Buttercup, enlarged. 507. Vertical section of the same, 

 showing the seed within 



FIG. 6G8 Achenium of Mayweed (no pappus) 569 That of Cichory (its pappus a shal- 

 low cup). 670 Of Sunflower (pappus of two deciduous scales) 571 Of Sneezcwecd (Ilele- 

 nium) with its pappus of five scales 672. Of Sow-Thistle, with its pappus of delicate downy 

 hairs. 573 Of the Dandelion, its pappus raised on a long beak. 



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