130 



REPRESENTATIVE PLANTS 



Kinds ok 

 Plants 



Number of 



Kinds of 



F^Acn 



Quantity 



Alonk or 

 Associated 



Shade or 



Sun 



Water 

 Relation 



Parasite 

 OR Not 



Algte 



Lichens 



Fungi 



From all the observations made try to form a general 

 statement for each class, stating what their environment is, 

 and how each form seems by its structure, color, physical 

 features of dryness, softness, etc., to be adapted to its place 

 of growth. 



Draw a few characteristic forms (natural size or 7n) of 

 each class. 



Remember definitely that the stud}^ of plants and animals 

 in connection with their surroundings or environment is 

 ecology, and is perhaps the most valuable and certainly one 

 of the most interesting in which living things can be 

 observed. 



SECTION in. THE MOSS PLANTS 



Type 1. Water Liverworts {Riccia jimtans) 



Habitat. Riccia may be found in clear ponds or slow 

 streams having much vegetatiou, and especially in cold 

 springs of considerable volume. It is most easily grown in 

 the laboratory, where it ought always to be found. 



Appearance. Examine a plant iii the water with the naked 

 eye. What position with reference to the surface has it ? 

 Observe its color, size, shape, and mode of branching. Observe 

 also whether the axis is cylindrical or flattened. 



Structure. Examine with Qp). Observe the notches at 

 the end of each branch {vegetative ov growing notches) and the 

 mottled appearance of the axis due to air chambers within the 



