Are both Cissus and Ruscus considered flowering plants?
Cissus Cissus is a genus of approximately 350 species of lianas (woody vines) in the grape family (Vitaceae). They have a cosmopolitan distribution, though the majority are to be found in the tropics.
Crocus flavus Crocus flavus, known as yellow crocus or Dutch yellow crocus, is a species of flowering plant of the "Crocus" genus in the Iridaceae family. It grows wild on the slopes of Greece, former Yugoslavia, Bulgaria, Romania and northwestern Turkey, with fragrant bright orange-yellow flowers which Tennyson likened to a fire. It is a small crocus (5 - , despite the names of some cultivars, compared to the Giant Dutch crocuses ("C. vernus"). Its cultivars are used as ornamental plants.