APPENDIX A 



619 



Zamia occur in Florida, where they are known as "coonties," "compties," or 

 Florida arrowroots. They have subterranean stems, the crown of leaves growing 

 apparently from the soil, giving a fernlike appearance to the plant. The cones are 

 stalked, the staminate one more slender than the ovulate one. A larger species 



Fig. A. 20. Representative conifers. A, arborvitae or white cedar, Thuja. B, red cedar or 

 juniper, Juniperus or Sabina, with male cones. C, red cedar with female cones or "juniper 

 berries." D, tamarack or larch, Larix. E, yew, Taxus, with female cone. F, yew with male 

 cones. 67, hemlock, Tsuga. (From Miller and Blaydes, Methods and Materials for Teaching 

 Biological Sciences.) 



(Cycas revoluta, Fig. 26.14) has been introduced and is cultivated in many parts of 

 the south as an ornamental plant. 



The Large-leaved Evergreen Trees (*Cordaitales) were the commonest gymno- 

 sperms of the late Paleozoic. They were tall, slender trees that formed extensive 

 forests, or grew among the lycopods of the coal swamps. Some of the largest 

 were as much as 120 feet tall and 3 feet in diameter at the base, with the lower 

 two-thirds or three-fourths of the trunk unbranched, and the dense crown of 



