Taxa described in 1946

Docodonta is an order of extinct Mesozoic mammaliaforms (advanced cynodonts closely related to true crown-group mammals). They were among the most common mammaliaforms of their time, persisting from the Early Jurassic to the Early Cretaceous across the continent of Laurasia (modern-day North America, Europe, and Asia). They are distinguished from other early mammaliaforms by their relatively complex molar teeth.

Kuehneromyces is a genus of agaric fungi in the family Strophariaceae. The genus was circumscribed by mycologists Rolf Singer and Alexander H. Smith in 1946.

Raphiocarpus is a genus of flowering plants belonging to the family Gesneriaceae.

Rhynchophora is a genus in the Malpighiaceae, a family of about 73 genera of flowering plants in the order Malpighiales. Rhynchophora comprises two species of slender woody vines native to Madagascar. The distinctive three to four-winged fruit resembles a helicopter and is unique in the family.

Thyrsanthemum is a genus of plants in the Commelinaceae, first described in 1946. The entire genus is endemic to Mexico.

The Asterinaceae are a family of fungi in the class Asterinales.

Lissotestella is a genus of minute sea snails or micromolluscs, marine gastropod molluscs, unassigned in the superfamily Seguenzioidea. First described by A. W. B. Powell in 1946, the genus is endemic to the waters surrounding New Zealand.

Phragmotheca is a genus of flowering plants in the family Malvaceae. It includes 11 species native to Panama and western South America (Colombia, Ecuador, and Peru).

Ancistragrostis is a genus of Australian and New Guinean plants in the family Poaceae.