B2 



ABBREVIATIONS AND SIGNS 



short dash indicate the extremes 

 of variation, as "5-12 mm. long, 

 few-mauy-flowered," i.e. varying 

 from five to twelve millimeters in 

 length and from few to many flow- 

 ered. 

 § section. 



! A mark of affirmation or authentica- 

 tion. 



? indicates doubt. 



^Bearing stamens or antheridia but 

 neither pistils nor archegonia. 



9 Bearing pistils or archegonia but 

 neither stamens nor antheridia. 



CO Of indefinite number, usually many, i x crossed with, the sign of a hybrid. 



100 Millimeters 



yio Meter, or 1 Decimeter 



