Carl Julius Bernhard Börner

Gentianella amarella, the autumn gentian, autumn dwarf gentian, or autumn felwort, is a short biennial plant flowering plant in the gentian family, Gentianaceae. It is found throughout Northern Europe, the western and northern United States, and Canada.

Gentianella campestris, common name field gentian, is a small herbaceous biennial flowering plant in the Gentianaceae (gentian family) native to Europe. Its bluish-purple flowers contain four petals.

Stuckenia is a genus of flowering aquatic plants. It contains approximately 30 species that grow in shallow water. Pondweed is a common name for plants in this genus.

Gentianella germanica, commonly known as German gentian, is a species of dwarf gentian from Europe. It grows primarily in grasslands with calcareous soils in primarily in Central Europe, northern France, and the Low Countries, but with a small population in the United Kingdom. In the UK it is also known as the Chiltern gentian and it grows in the Chiltern Hills of southern England. It is a small, usually biennial plant with large five petaled red-violet flowers.

Stuckenia filiformis is a species of flowering plant belonging to the family Potamogetonaceae. Its native range is Temperate Northern Hemisphere, Hispaniola, Ecuador to South America. Synonym: Potamogeton filiformis Pers.

Stuckenia pectinata (syn. Potamogeton pectinatus), commonly called sago pondweed or fennel pondweed, and sometimes called ribbon weed, is a cosmopolitan water plant species that grows in fresh and brackish water on all continents except Antarctica.

Heterophyllium is a genus of mosses belonging to the family Sematophyllaceae. The genus has almost cosmopolitan distribution. Species: Heterophyllium acunae Thériot, 1941 Heterophyllium adscendens (Lindb.) Broth.

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