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Posidonia alpina
Taxonomy
Posidonomya alpina was named by Gras (1858). 
It was recombined as Posidonia alpina by Sanborn (1960).
It was recombined as Posidonia alpina by Sanborn (1960).
  Sister species lacking formal opinion data
  
P. aequilatera, P. browni, P. corrugata, P. corrugata, P. corrugata, P. cycloides, P. dubiosa, P. gibsoni, P. insignis, P. kedahensis, P. lamellosa, P. mambranacea, P. membranacea, P. nahwisi, P. nasuta, P. pariseinsis, P. striata, P. trapezoedra, P. ussurica, P. venusta, P. vetusta, P. wapanuckensis, P. wengensis, P. nalivkini, P. venusta  
Synonymy list
| Year | Name and author | 
|---|---|
| 1858 | Posidonomya alpina Gras | 
| 1960 | Posidonia alpina Sanborn pp. 15, 16, 18, 21, 23 figs. Plate 2, Figure 2 | 
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
 †Posidonia alpina Gras 1858
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||