THE PISTIL. Ill 



Indehiscent Dry Fruits. 



Select from among your dry, indehiscent fruits all those 

 that resemble Figs. 342, 343, 344, and 345, and that are 

 usually miscalled seeds. You will find upon many of 

 them such appendages as hairs, teeth, plumes, bristles, etc. 



An ACHENIUM is a dry, indehiscent, one-seeded fruit, 



FIG. 342. 

 Vertical Sec- 

 tion of Carpel 

 of Buttercun. 



FIG. 343. 



3.5. 



with a separable pericarp, tipped with the remains of the 

 style (Fig. 342). (The dark-colored, seed-like bodies on 

 the outside of a strawberry are achenia.) 



UTRICLE. By this term is understood a kind of ache- 

 nium, with a thin, bladdery pericarp which is sometimes 

 dehiscent. 



CARYOPSIS. A dry, indehiscent, one-celled, one-seed- 

 ed fruit, with the pericarp adherent to the seed, as seen in 

 wheat, barley, oats, maize, etc. (Fig. 345). 



CREMOCARP. Pendent achenia (Fig. 344). (See Ex. 

 LXVI.) 



CYPSELA. Still another variety of achenium, with an 

 adherent calyx-tube, as in compositae (Fig. 343). 



NUT. A hard, one-celled, one-seeded, indehiscent 

 fruit, produced from a several-celled ovary, in which the 

 cells have been obliterated, and all but one of the ovules 



