206 



THE PLANT WORLD 



their life history as well as their appearance they show relationship 

 to the ferns. They bear two kinds of reproductive bodies in 

 conelike structures on separate plants. 



The conifers are the trees we call evergreens and most of them 

 have needle-like leaves. The evergreens include the sequoias, the 

 largest and oldest trees. The eggs and sperms are borne in pistil- 

 late or staminate cones. Seeds are produced in the scales of the 



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Brooklyn Botanic Gardens, Brooklyn, N. Y. 

 What are the characteristics of a cycad ? 



pistillate cones, and when the cone dies, the seeds are released by 

 the curling backwards of the dry scales or sporophylls. 



The angiosperms (Gr. angeion, case or vessel), or true flowering 

 plants, of which we already know something, are a very large 

 group, including all of our common grasses and grains, and all 

 trees, shrubs, and plants that bear flowers. There are more than 

 240,000 known species. They are grouped in two great classes, 

 the monocotyledons and the dicotyledons. 



