620 



BOTANY 



PART II 



ovary is a pendulous ovule. /. paraguariensis in extra-tropical South America 

 yields Paraguay Tea or Mate. 



Family 4. Celastraceae. Euonymus europaea, the Spindle tree (Figs. 666, 

 667), is a British shrub with inconspicuous flowers; K4, C4, A 4, G(4). The 

 stamens are inserted at the margin of a large disc ; two ovules in each loculus. 

 In autumn the bright red arillus of the seeds, which hang by their stalks from the 

 opened pale red capsule, makes the fruit conspicuous. 



Family 5. Aceraceae. Trees with opposite leaves. The flowers show a 

 tendency to become unisexual by abortion of stamens or carpels. Disc intra- or 



Ki<;. 0<5~. Kunnymus europaea. A, Flowering branch (reduced) ; B, a flower (magnified) ; 

 C, D, the fruit (nat. size). (B-D, after ESGLER-PRANTL.) Poisosocs. 



extra-staminal. Carpels two. Fruit, a winged schizocarp (Fig. 668). In Britain 

 Acer campcstre and A. pseudoplatanus. The characteristic lobed outline and 

 palmate nervation of the leaves, as a rule, enable the genus to be readily recog- 

 nised. 



Family 6. Sapindaceae. Tropical trees or shrubs usually with obliquely 

 zygomorphic flowers with an extra-staminal disc. 



The crushed seeds of Paullinia cupana, a liane of tropical Brazil, yield GUARANA. 



Family 7. Hippocastanaceae. Closely related to the Sapindaceae. Acsculus, 

 Horse-chestnut. Acsc. Hippocastanum, the White Horse-chestnut, is a tree of 

 hilly regions of the eastern Mediterranean (Fig. 485 B). Aesc. pavia, the Red 



