METHODS OF STUDYING VEGETATION 



207 



or more genera begin with the same letter, e.g., Agropyrum, Allium, 

 Anemone, the one most abundant is indicated by a, and the others 

 by the first two letters, as al, an. In case two species of the same 

 genus are present, the species initial is combined with the generic 

 one, e.g., ac and ar for Agropyrum caninum and A. richardsonii 

 respectively. When a similarity in names would require three or 



10 



Fig. 74. Chart of the quadrat shown in Fig. 73. 'i'he princijial si>ccies 

 are Castilleia Integra (c), Artemisia frigula (a), and Anujullus hmbcrti 

 {ar). 



more letters, e.g., Androsace, Anemone, Antennaria, this is avoided 

 by fixing an arbitrary sign for one, viz., at. The number of stems 

 from one root is indicated by an exponent with the proper initial, 

 viz., a^. Seedlings are represented by a line drawn horizontally 

 through the letter. Plants in flower or fruit are distinguished 

 by a line drawn vertically throuL-h thorn. Tn chnrtinfr the seasonal 



