|  | 
| Kingdom Chromista | 
|  | Cystoseira setchellii Gardn. – accepted | 
|  | Halidrys dioica Gardn. – accepted | 
|  | 
| Kingdom Plantae | 
|  | Bonnemaisonia geniculata Gardn. – accepted | 
|  | Erythrotrichia parksii Gardn. – accepted | 
|  | Erythrotrichia porphyroides Gardn. – accepted | 
|  | Erythrotrichia pulvinata Gardn. – accepted | 
|  | Erythrotrichia tetraseriata Gardn. – accepted | 
|  | Gelidium arborescens Gardn. – accepted | 
|  | Gelidium nudifrons Gardn. – accepted | 
|  | Gelidium purpurascens Gardn. – accepted | 
|  | Gelidium robustum Gardn. – accepted | 
|  | Helminthora stricta Gardn. – accepted | 
|  | Prepusa hookeriana Gardn. – accepted | 
        
          |  |  |