MORPHOLOGY OF SPERMATOPHYTE3 



Tumboa is a remarkable monotypic genus. As described 

 and figured by Hooker, 1 the body has the shape of a gigantic 

 radish, which rises little above the surface of the ground, and 

 whose crown is sometimes 3.5 to 4.5 meters in circumference. 



FIG. 83. Ephedra antisypTiilitica : J, staminate branches ; 2, ovulate branches ; <?, sterile 

 branches; 4-, staminate strobilus; 5, ovulate strobilus ; 6, longitudinal section of 

 seed ; 7, bracts of the ovulate strobilus. After WATSON. 



The broad top is more or less concave and somewhat two-lobed, 

 and from the deep horizontal groove which separates the crown 

 from the body two enormously long parallel-veined leaves arise, 

 which extend upon the ground sometimes for 3 to 3.5 meters, 



