437 



of the fruit separate from each other, and dehisce like follicles, upon which the 

 internal layer is detached elastically and springs out, carrying the seeds with it. 

 Several species are ornamental plants. 



5. CUSPARIE.E. American. Flowers often zygoinorphic with garnopetalous 

 corolla; stamens 5. Ticorea ; Galipea (G. oflicinalis ; S. Am. ; "Cortex an- 

 gosturas ") ; Cusparia; Almeidea. 



B. The ovary is entire or only slightly grooved ; the style is 

 terminal, undivided. The fruit is most frequently a drupe or 

 berry. 



6. TODDALIE.E. Ptelea ; winged fruit. The huds are enclosed in the leaf- 

 sheath. Skimmia ; Phcllodendron. 



439. 



470. 



FIGS. 468-170. Citrus vulgaris. 



FIG. 468.-Branch with compound leaves. FIG. 4<59.-Transverse section of fruit. 



FIG. 470. Flowers (after the removal of the petals). 



7. AURANTIEJ:, ORANGE GROUP. Fruit a berry with a leathery 

 external layer. The most typical flower is found for example in 

 Limonia: S5, P5, A5 + 5, G5 (2-5). Citrus has 4-3-8-mevoiis 



