Jussiae

Jussiae is a genus of flowering plants in the family Onagraceae, commonly known as the evening primrose family. The genus is native to the Americas. Plants in the genus Jussiae are typically herbaceous perennials, though some can be annuals. They are characterized by their bright yellow or orange flowers, which often bloom at night. The leaves are usually simple and arranged alternately on the stem.

Species within Jussiae are found in a variety of habitats, including wetlands, swamps, and moist areas. Some species are aquatic or semi-aquatic, growing in or around water. The fruits are typically capsules that split open to release numerous small seeds. Pollination is often carried out by insects, particularly moths and bees.

Historically, the classification of Jussiae has seen some revisions. What was once considered a distinct genus is now often included within the larger genus Ludwigia. This taxonomic change reflects a deeper understanding of the evolutionary relationships between these plants. Therefore, when encountering the name Jussiae in older literature, it is important to note that the species it refers to may now be classified under Ludwigia. Despite these taxonomic shifts, the plants themselves retain their characteristic appearance and ecological roles. Their presence is often indicative of moist or wet environments.