Plants named in 2011

Mazaceae is a family of plants in the order Lamiales. The family was described by James L. Reveal in 2011. Genera in this family were most recently previously included in Phrymaceae and in older classifications were placed in Scrophulariaceae. Plants of the World Online includes four genera: Dodartia Tourn. ex L. Lancea Hook.f. & Thomson Mazus Lour. Puchiumazus Bo Li, D.G.Zhang & C.L.Xiang Germplasm Resources Information Network includes only Lancea and Mazus. The Angiosperm Phylogeny Website includes Dodartia, Lancea, and Mazus.

Palicourea elata, formerly Psychotria elata, commonly known as girlfriend kiss and labios de puta, is a tropical plant that ranges from Central to South American rain forests in countries such as Mexico, Costa Rica, Ecuador, Panama, and Colombia. The plant is most notable for its distinctly shaped red bracts and is consequently nicknamed “Hot Lips”. Though the bright red bracts are considered its most flashy feature, they are not the actual flowers of the plant but instead extravagant leaves. The hot lips plant comes in a variety of shapes and forms. P. elata is well-studied and has been

Bulbophyllum nocturnum is a species of epiphytic orchid that grows in New Britain. It was described in 2011, and is the first species of orchid known to consistently flower during the night, and close its flowers during the day.

Athyrium niponicum, the Japanese painted fern, is a species of fern native to eastern Asia. This species was redefined as a member of genus Anisocampium in 2011 based on phylogenetic analyses, but the genus has since been sunk into Athyrium. This deciduous fern has a creeping rhizome and a tuft-shape array of fronds. The fronds are variable in length, generally 30 to 75 centimeters long but occasionally over a meter in length. They have alternately arranged, subdivided pinnae. The spore-bearing sori on the undersides of the fertile pinnae are variable in shape, being "oblong, hooked,

Alibertia patinoi, commonly known as borojó, is a small (2-5m), dioecious tropical rainforest tree, one of the few edible fruit bearing species in the Rubiaceae family. Borojó, native to the world's wettest lowlands (the Chocó–Darién moist forests ecoregion), grows in the Chocó Department of northwestern Colombia and in the Esmeraldas Province of northwestern Ecuador. Borojó is an Emberá word meaning: boro = head, jo = fruit - head-shaped fruit, or round, globulous fruit. The species has also been reported from Panama, Venezuela and Costa Rica.

Diplaziopsidaceae is a family of ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Aspleniineae, and includes two genera. Alternatively, it may be treated as the subfamily Diplaziopsidoideae of a broadly defined family Aspleniaceae. They are described as medium-to-large ferns, which grow near streams in forested areas. Their rhizomes are thick and decumbent to erect. Species are found in east Asia, from China south to New Guinea and east into the Pacific.

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Nepenthes robcantleyi, or Robert Cantley's pitcher plant, is a tropical pitcher plant endemic to the Philippine island of Mindanao. It is closely allied to N. truncata and was once considered a dark, highland form of this species. Nepenthes veitchii from Borneo is also thought to be a close relative. The pitchers of N. robcantleyi are exceptionally large, reaching 40 cm in length by 10 cm in width. The inflorescence, at up to 2.5 m long, is the tallest among known Nepenthes species. The plant itself does not grow very tall, however, and is not known to climb. The specific epithet robcantleyi

Eokochia is a monotypic genus of flowering plants belonging to the amaranth family. The only species is Eokochia saxicola, a very rare plant only found in Italy.

Aylostera albopectinata is a species of Aylostera from Bolivia.

Spigelia genuflexa is a species of annual herb of the family Loganiaceae from Bahia state, Brazil, which was described in 2011. It is unusual in that the stems bend down after flowering to deposit the seeds in the soil (geocarpy).

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Nepenthes pulchra is a tropical pitcher plant endemic to the Philippine island of Mindanao, where it grows at 1,300–1,800 m above sea level. Its discovery was announced online in August 2011.

Nepenthes nigra is a tropical pitcher plant known from a number of mountains across Central Sulawesi, where it grows at elevations of 1,500–2,700 m (4,900–8,900 ft) above sea level. The specific epithet nigra refers to the dark colouration of the pitchers and stem. The species is closely related to N. hamata and N. tentaculata.

Nepenthes monticola is a tropical pitcher plant known from a number of mountains in the west central highlands of western New Guinea, where it grows at elevations of 1,400–2,620 m above sea level. Prior to its description as a species in 2011, N. monticola was lumped with the closely related N. lamii.

Nepenthes epiphytica is a tropical pitcher plant known only from the Berau and East Kutai Regencies of East Kalimantan, Borneo, where it grows at an elevation of around 1,000 m above sea level. Prior to its formal description as a species, N. epiphytica was considered to be a variant of the closely related N. fusca. Nepenthes epiphytica belongs to the loosely defined "N. maxima complex", which also includes, among other species, N. boschiana, N. chaniana, N. eymae, N. faizaliana, N. fusca, N. klossii, N. maxima, N. platychila, N. stenophylla, and N. vogelii. The specific epithet epiphytica

Nepenthes ceciliae is a tropical pitcher plant endemic to the Philippine island of Mindanao, where it grows at 1500–1880 m above sea level. Its discovery was announced online in August 2011. Nepenthes ceciliae belongs to the informal "N. alata group", which also includes N. alata, N. copelandii, N. extincta, N. graciliflora, N. hamiguitanensis, N. kitanglad, N. kurata, N. leyte, N. mindanaoensis, N. negros, N. ramos, N. saranganiensis, and N. ultra. These species are united by a number of morphological characters, including winged petioles, lids with basal ridges on the lower surface (often

Meconopsis autumnalis, the Nepalese autumn poppy, is a yellow-flowered Himalayan poppy belonging to series Robustae, and is endemic to the Ganesh Himal range of central Nepal, where it was discovered in 2008 on a research expedition from the University of Aberdeen. In addition to several morphological features, the species is characterised by its late flowering period (as reflected in the specific etymology), which has more than likely resulted in a barrier to gene flow and subsequent evolutionary divergence from the closely related and sympatric species Meconopsis paniculata. The leaves

Grubovia is a genus of flowering plants belonging to the family Amaranthaceae. It is native to Hungary, Romania, Yugoslavia, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, West Siberia, Mongolia, Tibet and parts of China (Manchuria, Inner Mongolia, Qinghai and Xinjiang). It has been introduced into Czechoslovakia. The genus name of Grubovia is in honour of Valeri Grúbov (1917–2009), a Russian botanist with a focus on central Asia. It was first described and published in Taxon Vol.60 on page 72 in 2011. Known species, according to Kew: Grubovia brevidentata G.L.Chu Grubovia dasyphylla

Campeiostachys dahurica (also called Dahurian wildrye or asiatic wildrye) is a species of perennial herb and a member of the flowering plant family Poaceae. The species is widespread in central and Eastern Asia. This species has been introduced in the Great plains of the United States and the prairie provinces in Canada. It has also been introduced to the Baltic states. It has several subspecies and varieties.

Butia odorata, also known as the South American jelly palm, jelly palm, or pindo palm, is a Butia palm native to southernmost Brazil and Uruguay. This slow-growing palm grows up to 10m, although it is often less tall. It is identifiable by its feather palm pinnate leaves that arch inwards towards a thick stout trunk.

Bulbophyllum stenophyton is a species of flowering plant in the family Orchidaceae.

Aylostera pygmaea, synonyms including Rebutia pygmaea, is a species of cactus in the genus Aylostera, native to Bolivia and northwest Argentina. It has gained the Royal Horticultural Society's Award of Garden Merit.

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Schlumbergera lutea, synonym Hatiora epiphylloides, is a species of flowering plant in the family Cactaceae, subfamily Cactoideae, native to southeast Brazil. It is a shrubby epiphyte, with flattened stems and bright yellow flowers.

Rhinotropis cornuta, synonym Polygala cornuta, is a species of flowering plant in the milkwort family known by the common name Sierra milkwort. It is native to many of the mountain ranges of California and northern Baja California, where it grows in local habitat types such as chaparral and forest. It is a rhizomatous perennial herb or shrub known to exceed 2 meters in maximum height, spreading or growing erect. The leaves are linear, lance-shaped, or narrowly oval, up to 6.5 centimeters long, and widely spaced along the branches. The inflorescence is a short array of flowers varying in color

Duma is a genus of shrubby flowering plants in the family Polygonaceae, subfamily Polygonoideae. The genus was separated from Muehlenbeckia in 2011. The native range of the genus is Australia.

Brassia aurantiaca is a species of orchid. It is native to Colombia, Ecuador and Venezuela.