ANGIOSPERM^, DICOTYLEDONES. 



789 



fig. 442 5 ). The calyx, corolla, and androecium are 4-merous in Cornacere, 5-merous 

 m Umbelliferae and Araliaceae (see figs. 442 2 and 442 6 , and p. 289, fig 283 *) 

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



Fig. 442. -Umbellales. 



1 Heradeum Sphondylium (Family Umbelliferse), flowering plant, a Single flower. * Fruit. Longitudinal section through 

 the flower of Eryngium maritimum (Family Umbelliferse). 6 Hydrocotyle vulgaris (Family Umbelliferse), entire plaut. 

 6 Cornus mas (Family Cornacese), inflorescence. 7 Longitudinal section through a flower. Fruit. 1 reduced ; *, , *, ', ', 7 , 

 and s magnified. (After Baillon.) 



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

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

 occurs in the Central Alps as high as 2600 metres above the sea-level. Fossil 

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



