﻿Ruppia anomala sp. nov., an aberrant type of the Potamogetonaceae 



C. H. ( 



dunculus post anthesin brevis nee elongatus, rectus; thecae anth^ 

 rarum subglobosae; poUinis cellulae semilunariter curvatae; ca 

 pidia 2-4, oblique ovoidea; stigma peltatum, supra visum sul 

 rotundum; carpella fructifera oblique ovoidea, apice breviter ( 

 oblique attenuata, a basi concreta divergentia ; carpellorum podi 

 gyna in unum conjuncta; podogynum commune striis longitudin; 

 libus conjunctionem demonstrantibus constructum, sursum ii 



Praecipue differt ab omnibus Ruppiis carpellis fructiferis 

 basi concretis, in apice podogyni communis positis. 



Porto Rico: border of Lake Guanica, March 11 and 12, 1913, 

 N. L. Britton & J.A. Shafer 1S70. 



In December, 1913, I visited the New York Botanical Garden 

 and studied the collections of the so-called "sea-grasses." In 

 the herbarium material I found a strange plant, habitually like a 

 slender Ruppia, but with quite different fruits. I pointed out to 

 Dr. N. L. Britton that this plant, which he had himself collected 

 at the border of a lagoon, Lake Guanica, in Porto Rico, was an 

 unknown plant, at least to me. He then asked me to examine it 

 more closely and, if new, to describe it, and after my return from 

 the West Indies I had the material sent to Copenhagen for study. 



I thought at first that we had to do with a new genus, but now I 

 consider it better to regard the plant in question as an aberrant 

 species of Ruppia. 



The morphology of the stem and leaves is the same as in an 

 ordinary slender and tiny Ruppia maritima L.* Also the mor- 

 phology of the flower is in all essential points as usual. Each 

 of the two stamens consists of two anther halves (th ecae) 



The morphology of Ruppia marilima. Transact. 



