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.

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.

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

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

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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.

Jupunba filamentosa is a species of flowering plant in the family Fabaceae. It is a tree or shrub endemic eastern Brazil, ranging from Rio Grande do Norte to Espírito Santo. It is native to lowland wet Atlantic Forest and restinga.

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Frodinia gleasonii, the yuquilla, is a species of plant in the family Araliaceae. It is endemic to Puerto Rico. It is found in ultramafic soils in the Cordillera Central. It is a montane forest tree.

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Cochemiea thornberi is a species of cactus known by the common names Thornber's fishhook cactus and Thornber's nipple cactus. It is native to Arizona in the United States and Sonora in Mexico.

Cochemiea tetrancistra is a species of fishhook cactus known by the common name common fishhook cactus. It is native to the Mojave and Sonoran Deserts of northern Mexico and the southwestern United States, where it grows in a variety of desert habitat types.

Cochemiea fraileana is a rare species of cactus in the genus Cochemiea commonly known as the Fraile nipple cactus. This species is endemic to the state of Baja California Sur in Mexico and can be found along the east coast of the southern part of the state in desert scrub communities. They tend to grow in non-calcareous dry granite-based soil but can also grow in rocky habitats, either in rock fissures or directly on top of the rock surface even without the presence of soil. Thus, the mineral composition of the rocks in their habitat directly influences their abundance. The habitat of

Cochemiea estebanensis is a species of Cochemiea found in Mexico.