To which taxonomic category do both Maxillaria and Leonotis belong?
Maxillaria Maxillaria, abbreviated as Max in the horticultural trade, is a large genus of orchids (family Orchidaceae). This is a diverse genus, with very different morphological forms. Their characteristics can vary widely.
Isoetopsida The Isoetopsida is a class of Lycopodiophyta. All extant species belong to the genus "Selaginella" in the order Selaginellales or to the genus "Isoetes" in the order Isoetales. In the past, members of this group sometimes have been placed in the classes Isoetopsida, Selaginellopsida, or Lycopodiopsida. There are c. 700 species of "Selaginella" and 140-150 species of "Isoetes", with a cosmopolitan distribution, but often scarce to rare. Some botanists split "Isoetes" by separating two South American species into the genus "Stylites".