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Halophila johnsonii  Eiseman
Taxonomic Serial No.: 502870

(Download Help) Halophila johnsonii TSN 502870

 Taxonomy and Nomenclature
       
  Kingdom: Plantae  
  Taxonomic Rank: Species  
  Common Name(s): Johnson's seagrass [English]
  
  Accepted Name(s): Halophila ovalis (R. Br.) Hook. f.
 
       
  Taxonomic Status:    
  Current Standing: not accepted - synonym   
       
  Data Quality Indicators:    
  Record Credibility Rating: verified - standards met  
       

 References
       
  Expert(s):    
  Expert: Robert R. Haynes  
  Notes: Professor Emeritus, Department of Biological Sciences, The University of Alabama, Tuscaloosa, Alabama, 35476, USA   
  Reference for: Halophila johnsonii    
       
  Other Source(s):    
  Source: Hydrocharitaceae of North America Update, database (version 2010)  
  Acquired: 2010   
  Notes: Updated by the Flora of North America Expertise Network, in connection with an update for USDA PLANTS (2007-2010)   
  Reference for: Halophila johnsonii   
       
  Source: The PLANTS Database, database (version 4.0.4)  
  Acquired: 1996   
  Notes: National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov   
  Reference for: Halophila johnsonii   
       
  Source: The PLANTS Database, database (version 5.1.1)  
  Acquired: 2000   
  Notes: National Plant Data Center, NRCS, USDA. Baton Rouge, LA 70874-4490 USA. http://plants.usda.gov   
  Reference for: Halophila johnsonii   
       
  Publication(s):    
  Author(s)/Editor(s): National Oceanic and Atmospheric Administration  
  Publication Date: 1998   
  Article/Chapter Title: Endangered and Threatened Species; Threatened Status for Johnson's Seagrass   
  Journal/Book Name, Vol. No.: Federal Register, vol. 63, no. 177   
  Page(s): 49035-49041   
  Publisher:    
  Publication Place:    
  ISBN/ISSN:    
  Notes:    
  Reference for: Halophila johnsonii, Johnson's seagrass [English]   
       
  Author(s)/Editor(s): Short, Frederick T., Gregg E. Moore, and Kimberly A. Peyton  
  Publication Date: 2010   
  Article/Chapter Title: Halophila ovalis in the Tropical Atlantic Ocean   
  Journal/Book Name, Vol. No.: Aquatic Botany, vol. 93, no. 3   
  Page(s): 141-146   
  Publisher:    
  Publication Place:    
  ISBN/ISSN: 0304-3770   
  Notes: doi: 10.1016/j.aquabot.2010.05.001   
  Reference for: Halophila johnsonii   
       

 Geographic Information
       
  Geographic Division: North America  
       
  Jurisdiction/Origin:    
 

 

    

 Comments
       
  Comment: US ESA: Listed Threatened, as published in Federal Register Volume 63, Number 177, Pages 49035 - 49041, September 14, 1998  
    The recognition of Halophila johnsonii as a species remains controversial. Data in a recent paper by Short, Moore, and Peyton (2010) indicate that H. johnsonii Eisman (TSN 502870) is not clearly distinguishable from H. ovalis (R. Br.) Hook. f. (TSN 38959). Other recent papers using molecular techniques have also failed to clearly differentiate the species. Robert Haynes (2013, pers. comm.) who authored the treatment for the group in Flora of North America Vol. 22 (2000), which included the taxon as a distinct species, now concurs that H. johnsonii falls within H. ovalis. but notes that more research is needed to clarify relationships within this species complex, especially in the clade that includes H. ovalis, H. hawaiiana and the populations previously referred to as H. johnsonii  
 

 

    

 
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