u 



NATUBAL niSTOBY OF rLANTS. 



ought perhaps to be distinguished only by the title of sections. 

 ll'rsonia 1 has the dioecious flowers of Gyrostemon, with less 

 numerous stamens arranged upon a single verticil. But the fruit 



Didymotheea thesioides. 



Fig. 74. 

 Female flower ( 1 y ) ). 



Fig. 75. 

 Longitudinal section of female 

 flower. 



Fig. 73. 



Female floriferous 

 branch. 



Fig. 76. 

 Dehiscent fruit ( a T s ). 



Fig. 77. 

 Seed (y). 



instead of being formed of free carpels is constituted of some twenty 

 cells with thick walls, 2 united in a woody mass, and quite indehiscent. 

 One or two Australian 3 Tersonias are known, the vegetative organs 

 being the same as those of the Cyclostemon ramulosus. 



Didymotheea'' (figs. 73-77) represents a lessened type of Gyros- 

 temon, in which the flowers are idicecious and tetramerous. The 

 perianth is there represented by a small calyx with four deep 



■Gyrandra Moq., (ol., 



1 Moq., Prodr., 40.- 

 nec Wail.), loc. cit. 



2 Traversed at its exterior surfacs by 

 jecting wrinkles circular and horizontal. 



pro- 



3 Benth., Fl. Austral., v. 149. 



4 Hook, f., in Hook. Jcurn., vi. (1847), 278. 

 -Moq., Prodr., 36. 



