264 



PRACTICAL COURSE IN BOTANY 



indehiscent fruits do the joints become 

 when separated ? (296.) 

 300. Compound or syncarpous pods. 



Fig. 394. — Loment of 

 beggar-ticks. 



— The carpellary leaves may 

 unite either by their open 

 edges, as if a whorl like that 

 represented in Fig. 188 were 

 to grow together by the capsule of frost- 



/■n- orvr\ 1 weed, with parie- 



margms {r ig. 395) ; or each 



Fio. 395. — Cross 

 section of one- 

 celled syncarpous 



Fig. 396. — Folli- 

 cles of larkspur 

 borne on the same 

 torus, but dis- 

 tinct. 



tal place ntae. 



may first roll itself into a (^/'«'' ^"^^-^ 

 shnple follicle like the lark- 

 spur and columbine (Fig. 396), and then a number of 

 these may unite by their ventral sutures into a single syn- 

 carpous capsule, with as many locules as there are carpels 



397 



Fig. 397. — Pods of 

 Echeveria, contig- 

 uous, but distinct. 



398 



Fig. 398. — Capsule of 

 Colchicum, with carpels 

 united into a syncarpous 

 pod. 



399 



Fig. 399. — Capsule 

 of corn cockle, with 

 free central placenta. 



(Fig. 398). The seed-bearing sutures being all brought to- 

 gether in the center, the placenta becomes central and axial. 

 In the first case (Fig. 395) the open carpels form a one- 

 chambered capsule, though the placentas sometimes project, 

 as in the cotton, so far as to produce the effect of true 

 partitions with a central axial placenta. In capsules with 



