Plants named in 2020

Heptapleurum actinophyllum (formerly Schefflera actinophylla) is a tree in the family Araliaceae. It is native to tropical rainforests and gallery forests in northern and northeastern Queensland coasts and the Northern Territory of Australia, as well as New Guinea and Java. Common names include Australian umbrella tree, Queensland umbrella tree, octopus tree and amate.

Selenicereus costaricensis, also known as Costa Rica nightblooming cactus or Costa Rican pitaya, is a perennial climbing succulent in the cactus family (Cactaceae). Its fruit, a type of pitaya (dragon fruit), has high economic and nutritional value. The species is native to Central America and northwestern South America, ranging from Nicaragua to northern Peru in seasonally dry tropical biomes.

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Soda stocksii is a shrub species of the family Amaranthaceae (formerly classified under the Chenopodiaceae). It is locally known as khar, meaning salty.

Soda oppositifolia is a species of halophyte shrub native to the Mediterranean Basin.

Kuloa usambarensis (synonym Ocotea usambarensis) is a species of tree in the laurel family (Lauraceae). It is native to eastern Africa in Kenya, Tanga Region of Tanzania, and locally in Uganda, where it occurs at 1600–2600 m elevation in high rainfall Afromontane cloud forest. Common names include East African camphorwood, mkulo (Tanzania), mwiha (Uganda), muwong, muthaiti, and maasi.

Xiquexique gounellei is a species of plant in the genus Xiquexique of the cactus family. Spanish common names include alastrado, chique-chique, xique-xique and xique-xique das Pedras.

Soda rosmarinus is a perennial-green desert species of saltwort in the Amaranthaceae family. It is endemic to the lower Jordan Valley along the Dead Sea, in Israel and Jordan, and in the Syrian desert, Central Iraq (near Najaf) and in the coastal regions of Saudi Arabia, the islands of Bahrain, Qatar, and Iran, commonly known in Arabic by the names ʾušnān (Arabic: أشنان) and šenān and in the Neo-Aramaic languages by reflexes of ʾuḥlā. It is often used by Bedouins for cleaning as a soap substitute. In medieval Arabic literature, it is also known by the names of "green ushnan" and "launderers'

Rhaphiolepis bengalensis is a species of flowering plant in the family Rosaceae. R. bengalensis is a subtropical medium-sized tree, and is found in Asia, including in India at an elevation from 1,000 metres (3,300 ft) to 3,000 metres (9,800 ft). The species is rated least concern on the IUCN red list.

Cleistocactus ritteri is a species of Cleistocactus found in Bolivia.

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Tiganophytaceae is a family in the plant order Brassicales, consisting of the sole monotypic genus, Tiganophyton, represented by Tiganophyton karasense. The family is endemic to Namibia, occurring in three populations in the arid Karas Region of southern Namibia. It is one of two families endemic to the Namib desert, the other being Welwitschiaceae. The species, genus and family were unknown prior to 2010 when it was discovered in the Karas Region.

Leptocereus nudiflorus is a species of cactus that is native to Cuba. Common names include Flor De Copa and Goblet flower.

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Xiquexique tuberculatus is a plant species in the genus Xiquexique from the cactus family. It is commonly called "Caxacubri".

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Agrostis curtisii, the bristle bent, is a species of grass in the family Poaceae native to Eurasia. It is densely tufted, with hair like leaves and stems that grow up to 60 cm. Its spikelets are yellow-green in colour, and its lemmas are awned. The ligule is pointed. It has no rhizomes or stolons. Bristle bent flowers in the UK from June until July and is found typically on dry heaths and moors.

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Vickifunkia is a genus of flowering plants in the family Asteraceae. It includes ten species native to Central Asia, Afghanistan, the Himalayas, Xinjiang, Mongolia, and western Siberia.

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Neoarytera nekorensis is a species of plant in the family Sapindaceae. It is a tree endemic to New Caledonia.

Lordhowea amygdalifolia, synonym Senecio amygdalifolius, is a species of flowering plant in the daisy family (Asteraceae). It occurs in the Australian states of New South Wales and Queensland, in wet eucalyptus forest or around the margins of rainforest. Ferdinand von Mueller first described it in 1859, as Senecio amygdalifolius, from a collection made by Dr. Hermann Beckler, near the Hastings River.

Kuloa ikonyokpe (synonym Ocotea ikonyokpe) is a species of tree in the laurel family (Lauraceae). It is endemic to Cameroon. Kuloa ikonyokpe is tree which grows up to 40 metres tall. It grows in hill forests just outside the boundary of the Rumpi Hills Wildlife Sanctuary.

Yildirimlia is a monotypic genus of flowering plant in the family Apiaceae. Its only species is Yildirimlia gracillima, native to Turkey. The genus was established in 2020, for the species originally described as Froriepia gracillima.

Walsholaria is a genus of flowering plants in the family Asteraceae. It includes four species of shrubs native to Australia. The four species were previously placed in genus Olearia, which was found to be polyphyletic. In 2020 Guy L. Nesom described the genus Walsholaria, which he named for Australian botanist Neville G. Walsh. Walsholaria species are distinguished by their glabrous and resinous stems, leaves, and involucres; small, thickened, obovate or cuneate leaves with distally few-toothed margins; solitary terminal heads on short leafy branches; involucres with multiseriate, elliptic,

Stephania kaweesakii is a herbaceous perennial vine in the genus Stephania of the family Menispermaceae. It is native to Southeast Asia and was first described in Thailand in 2020 by Thai botanists Thaya Jenjittikul and Saroj Ruchisansakun.

Ruizia boutoniana, known by its native Creole name boucle d'oreille, is a shrub in the family Malvaceae. It is endemic to Mauritius. The species was first described as Trochetia boutoniana by Francis Friedmann in 1981. It was renamed in 2020 when genus Trochetia was subsumed into Ruizia.

Ruehssia cundurango is a species of plant of the genus Ruehssia native to Colombia, Ecuador and Peru in South America. It has the common name condurango. The subspecies Ruehssia cundurango subsp. cundurango (synonym Marsdenia cundurango) is known to contain conduritol, a cyclitol or cyclic polyol. It was first isolated in 1908 by K. Kübler from the bark of the vine.

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