Plants named in 2021

Aglaonema is a genus of flowering plants in the arum family, Araceae. They are native to tropical and subtropical regions of Asia and New Guinea. They are known commonly as Chinese evergreens.

Pterophylla sylvicola, known as tōwai or tawhero, is a medium-sized evergreen tree of the family Cunoniaceae native to northern New Zealand. It is formerly known as Weinmannia sylvicola.

Pterophylla racemosa, commonly known as the kāmahi, is an evergreen tree endemic to New Zealand. It is a member of the Cunoniaceae family of plants, and it is often referred to by its former botanical name Weinmannia racemosa. Most members of the Cunoniaceae are native to tropical wet parts of the Southern Hemisphere, with the majority of Pterophylla species being native to either Malesia and Papuasia or to Madagascar; however, two Pterophylla species are endemic to New Zealand: Pterophylla racemosa, and Pterophylla sylvicola. Whilst P. sylvicola is restricted to subtropical forests in the

Ortegocactus is a monotypic genus of cactus with a single species Ortegocactus macdougallii.

Cochemiea insularis is a rare species of cactus in the genus Cochemiea commonly known as the island nipple cactus. It is endemic to the vicinity of Bahía de los Ángeles and its neighboring islands in Baja California, Mexico.

Cochemiea guelzowiana is a species of plant belonging to the family Cactaceae.

Cochemiea boolii is a species of cactus in the subfamily Cactoideae with pink-petaled flowers.

Cochemiea schumannii is a species of Cochemiea found in Mexico.

Cochemiea palmeri is a species of Cochemiea found in Mexico.

Cochemiea multidigitata is a species of flowering plant in the family Cactaceae that is endemic to San Pedro Nolasco Island in Mexico, growing on steep slopes. Cochemiea multidigitata sprouts a white to cream-colored flower from spring to early summer.

Cochemiea mainiae is a species of cactus in the subfamily Cactoideae, with the common name counterclockwise nipple cactus.

Cochemiea hutchisoniana is a species of Cochemiea found in Mexico.

Cochemiea blossfeldiana is a species of Cochemiea found in Mexico.

Cochemiea cerralboa is a rare species of cactus in the genus Cochemiea commonly known as the Cerralvo nipple cactus. It is only found on Cerralvo Island in Baja California Sur, Mexico.

Cochemiea armillata is an uncommon species of cactus in the genus Cochemiea commonly known as the Los Cabos nipple cactus. This species is endemic to the Cape region of Baja California Sur in Mexico. It is somewhat similar in appearance to the rare Cochemiea capensis and the more common Cochemiea dioica.

Anaschisma ("ripped up") is an extinct genus of large temnospondyls. These animals were part of the family called Metoposauridae, which filled the crocodile-like predatory niches in the late Triassic. It had a large skull about 62 centimetres (24 in) long, and possibly reached 3 metres (9.8 ft) long. It was an ambush hunter, snapping up anything small enough to fit in its huge jaws. It was very common during the Late Triassic (Carnian-Norian age) in what is now the American Southwest.

Vanda falcata subsp. richardsiana is a subspecies of Vanda falcata. It is an epiphytic orchid native to North Chongqing, China.

Pterophylla affinis, formerly known as Weinmannia affinis, is a species of plant in the family Cunoniaceae. It is native to Fiji and the Samoan Islands.

Consolea corallicola is a species of cactus known by the common names Florida semaphore cactus and semaphore pricklypear. It is endemic to Florida in the United States, where it is limited to the Florida Keys.

Trichostema austromontanum is a species of flowering plant in the mint family known by the common name San Jacinto bluecurls. It is native to California from the mountains east of the Sierra Nevada to the Transverse Ranges and Peninsular Ranges, its distribution extending south into Baja California. It occurs in wet mountain meadows and on the shores of lakes. It is an annual herb approaching half a meter in maximum height, its aromatic herbage coated in glandular and nonglandular hairs. The elongated or lance-shaped leaves are 2 to 5 centimeters long. The inflorescence is a series of

Pakau pennigera, commonly known as lime fern, gully fern, feather fern and piupiu, is a small fern found in south eastern Australia and New Zealand. It grows along streams, and is also seen in areas of open forest. This fern is found in Tasmania, Victoria and New Zealand. There is a record of it occurring in the northern Australian state of Queensland. But there is not a reliable record of it occurring in New South Wales, which is south of Queensland and north of the other locations where this plant is known to exist.

Cochemiea angelensis is a species of plant in the family Cactaceae.

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Pterophylla rutenbergii is a species of plant in the family Cunoniaceae endemic to Madagascar. The species is common and has a widespread distribution. It can be found from sea level to 2000 metres elevation at the summits at Marojejy National Park. It grows in the lowland rain forests of eastern Madagascar and the montane and subhumid forests in the center and north of the island. The species does best in open, disturbed habitat, particularly on roadsides and areas recently burned. The species exhibits high morphological plasticity, ranging from being shrub-like with small leaves at high

Pterophylla marquesana, formerly known as Weinmannia marquesana, is a species of plant in the family Cunoniaceae. It is a shrub or tree endemic to the Marquesas Islands of French Polynesia.

Epicharis parasitica, commonly known as yellow mahogany, is a species of tree in the family Meliaceae; it grows primarily in tropical rainforests and is native to Taiwan, parts of Malesia, Papuasia, and northeast Queensland.

Citrus ryukyuensis, also known as the tanibuta (Okinawan: タニブター, romanized: tanibutā, lit. 'big seed'), is a newly characterized wild citrus species native to the Ryukyus and adjacent islands, most closely related to the mainland mandarin orange, C. reticulata. As with other citrus, it is a member of the Rutaceae family. The Ryukyu and mainland species have diverged for more than 2 million years, and unlike the mainland mandarin, the Ryukyu mandarin reproduces sexually. Its hybridization with the mainland species has given rise to the unique mandarin hybrids of the islands.

Acanthocalycium thionanthum subsp. ferrarii is a subspecies of Acanthocalycium from Argentina. It can grow to up to 12 centimeters in diameter and produces red, orange, or yellow flowers.

Sphaerocoryne lefevrei, known in Khmer as rumduol (រំដួល [rum.ɗuəl]) and in Thai as lamduan (ลำดวน), is a flowering plant of the Annonaceae family, native to Southeast Asia. It is commonly cultivated as an ornamental plant, and is the national flower of Cambodia and the provincial flower of Thailand's Sisaket province. Some sources treat it as the same species as the similar S. affinis.

Pterophylla aphanoneura, formerly known as Weinmannia aphanoneura, is a species of plant in the family Cunoniaceae. It is a shrub or tree native to Borneo, with a single record from western Sumatra. Pterophylla aphanoneura grows in montane rain forest from 1,175 to 2,560 metres elevation. Its habitat includes open moss forest, ericaceous mossy forest, and submontane heath forest.