I9I4.] SOUTHEASTERN NORTH AMERICA. 249 



of its species being American. The fossil form is compared with 

 Psychotria grandis Svvartz of the American tropics. 



The genus Coussarea Aublet with about 40 existing species in 

 the BraziHan region has been identified by Engelhardt from the 

 early Tertiary of Chili. The genus Hoffniannia Swartz with about a 

 score of existing American herbs or shrubs, mostly confined to Cen- 

 tral America, has a fossil species in the early Tertiary of Chili. 

 Likewise the genera Sabicca Aublet and Gouatteria Martius each 

 have a single species in the Tertiary of Chili. 



The Baltic amber (Sannoisian) has yielded a flower referred 

 to Sendelia and a leafy twig referred to Enantioblastos. The genus 

 Galium^ comprising over 250 widely distributed existing herbaceous 

 forms, has been doubtfully identified from the Eocene of Green- 

 land. Its fruits are also not uncommon in Pleistocene deposits. 

 The genus Randia Houst., embracing about one hundred existing 

 species of shrubs or trees in all tropics, is identified by a fruit in the 

 Aquitanian of Rhenish Prussia. 



The genus Ruhiacitcs so named by Webber from its resemblance 

 to the existing forms of Rxihia Linne has furnished three species of 

 leaves and flowers in the Aquitanian of Prussia and Switzerland. 

 The genus Gardenia Ellis, containing about sixty species of shrubs 

 or rarely trees of the eastern hemisphere, is represented by charac- 

 teristic fruits in the Sparnacian of France, the Aquitanian of Ger- 

 many and England, the Miocene of Baden and Italy, and the Pliocene 

 of Italy. The genus Posoqucria Aublet, which includes five or six 

 existing South American shrubs or trees, is represented according to 

 Unger by both leaves and fruits in the Miocene of Croatia. The 

 genus Ixora Linne with one hundred existing species of shrubs and 

 small trees in all tropics is likewise recorded from the Miocene of 

 Croatia, as is also Pavetta Linne, a genus with about seventy existing 

 species of shrubs or small trees of the Oriental tropics, which has 

 furnished both leaves, flowers and fruits from the celebrated plant 

 and insect beds of Radoboj in Croatia. 



The genus Coprosoma Forst., with 40 existing species in Aus- 

 tralia, New Zealand and Oceanica, was recorded by Ettingshausen 

 from the Tertiary of Tasmania. 



The genus Nauclea Linne, which has about thirty existing species 



