128 



BIOLOGY FOR BEGINNERS 



While it is not necessary to learn these names or figures, the fol- 

 lowing table will show you how large and varied the plant kingdom 

 really is and how few we know of its members. 



FIG. 41. Rock lichen (Parmelia contigua). From Atkinson. 



Flowering plants, spermatophytes (producing seeds) : 



True flowering plants and \ 



Pines and their relatives / 130 ' 00 



Flowerless plants (producing spores) 96,600 kinds 



Thallophytes (algae and fungi) : 



Algae 16,000 kinds 



Fungi v 55,000 kinds 



Bryophytes (mosses and their relatives) 16,500 kinds 



Lichens 5,600 kinds 



Ferns 3,500 kinds 



