INTRODUCTION vii 



there are a few authenticated records; hail has also been experienced at 

 long intervals. 



The native plants of Bermuda have originated from seeds or other 

 parts brought from the American mainland or the West Indies by the nat- 

 ural agencies of wind, ocean currents and birds. About 80 per cent, of 

 the native land plants inhabit the West Indies or southern Florida or both. 

 About 8.7 per cent, of the total native flora is endemic, there being 61 

 species in Bermuda or its waters not known to grow naturally anyrx-here 

 else in the world. These plants are of the greatest interest to naturalists, 

 as they presumably developed in Bermuda from related plants formerly 

 existing but now mostly extinct here ; some of them may yet be found else- 

 where as botanical exploration proceeds. These true Bermudians are as 

 follows : 



Eleoeharis bermudiana Britton (p. 52) 



Carex bermudiana Hemsley (p. 55) 



Sabal Blackburnianum Glazebrook (p. 56) 



Sisyrinchium Bermudiana Linnaeus (p. 84) 



Peperomia septentrionalis S. Brown (p. 94) 



Phaseolus lignosus Britton (p. 183) 



Elaeodendron Laneanum A. H. Moore (p. 223) 



Ascyrum macrosepalum S. Brown (p. 245) 



Chiococca bermudiana S. Brown (p. 362) 



Erigeron Darrellianus Hemsley (p. 393) 



Juniperus bermudiana Linnaeus (p. 410) 



Adiantum bellum T. Moore (p. 420) 



Diplazium Laffanianum (Baker) Christensen (p. 423) 



Dryopteris bermudiana (Baker) Gilbert (p. 426) 



Dryopteris speluncae (Linnaeus) Underwood (p. 426) 



Campylopus bermudianus R. S. Williams (p. 433) 



Trichostomum bermudianum Mitten (p. 438) 



Thelidium Farlowi Riddle (p. 471) 



Thelidium bermudanum (Tuckerman) Riddle (p. 472) 



Anthracothecium tetraspermum Riddle (p. 472) 



Opegrapha ophites Tuckerman (p. 473) 



Gyalecta Farlowi Tuckerman (p. 475) 



Bilimbia Brittoniana Riddle (p. 475) 



Psorotichia bermudana Riddle (p. 476) 



Collema bermudanum Tuckerman (p. 476) 



Collema thamnodes Tuckerman (p. 476) 



Lecanora bermudensis Nylander (p. 477) 



Ascophanus bermudensis Seaver (p. 485) 



Calonectria granulosa Seaver (p. 485) 



Calonectria Umbelliferarum Seaver (p. 485) 



