ANGIOSPERM«, DICOTYLEDONES. 



789 



fig. 4-i2^). The c.ilj-x, corolla, and andniciiiin are 4-merous in CornacesB, 5-niorous 

 in Unibelliferje and Araliacese (see figs. 442= and 442", and p. 289, fig. 2<S3 0. 

 The Umbellales belong chiefly to the North Temperate Zone, but the Araliacese are 



Fig. 442 —Umbellales. 



' BeraeUum Sphondylium (Family UmbellifcraD), flowering plant. = .Single flower. ' Fruit. * Longitudinal section through 

 the flower of Eryngium maritimwn (Family rmbelliferie). * Hydrocotyle vulgaris (Family I'mbelliferjc). entire plant. 

 * Ctwntw ma* (Family Cornacea'). inflorescence. "Longitudinal section through a flower. "Fruit, i reduced; -,3,*.",'^,^, 

 and > mag:Difled. (After Ijaillon.) 



also represented by a number of species in the Tropics. Several of the Umbelliferae 

 are natives of the arctic area of vegetation and of alpine regions. Gaya simplex 

 occurs in the Central Alps as high as 2()00 metres above the sea-level. Fos.sil 

 remains, belonging chiefly to the families of Araliaceee and Cornaceae, have been 



