Plants named in 1822

Cupressaceae or the cypress family is a family of conifers. The family includes 27–30 genera (17 monotypic), which include the junipers and redwoods, with about 130–140 species in total. They are monoecious, subdioecious or (rarely) dioecious trees and shrubs up to 116 m (381 ft) tall. The bark of mature trees is commonly orange- to red-brown and of stringy texture, often flaking or peeling in vertical strips, but smooth, scaly or hard and square-cracked in some species. The family reached its peak of diversity during the Mesozoic era.

Betulaceae, the birch family, includes six genera of deciduous nut-bearing trees and shrubs, including the birches, alders, hazels, hornbeams, hazel-hornbeam, and hop-hornbeams, numbering a total of 167 species. They are mostly natives of the temperate Northern Hemisphere, with a few species reaching the Southern Hemisphere in the Andes in South America. Their typical flowers are catkins and often appear before leaves. In the past, the family was often divided into two families, Betulaceae (Alnus, Betula) and Corylaceae (the rest). Recent treatments, including the Angiosperm Phylogeny Group,

Yerba mate or yerba maté ( YUR-bə MAH-tay), Ilex paraguariensis, is a plant species of the holly genus native to South America. It was named by the French botanist Augustin Saint-Hilaire. The leaves of the plant can be steeped in hot water to make a beverage known as mate. Brewed cold, it is used to make tereré. Both the plant and the beverage contain caffeine. The indigenous Guaraní and some Tupi communities (whose territory covered present-day Paraguay) first cultivated and consumed yerba mate prior to European colonization of the Americas. Its consumption was exclusive to the natives of

Taxaceae, commonly called the yew family, is a coniferous family which includes six extant and two extinct genera, and about 30 species of plants, or in older interpretations three genera and 7 to 12 species.

The Balsaminaceae (commonly known as the balsam family) are a family of dicotyledonous plants, comprising two genera: Impatiens, which consists of over 1000 species, and Hydrocera, consisting of 1 species. The flowering plants may be annual or perennial. They are found throughout temperate and tropical regions, primarily in Asia and Africa, but also North America and Europe. Notable members of the family include jewelweed and busy Lizzie.

Cytisus scoparius (syn. Sarothamnus scoparius), the common broom or Scotch broom, is a deciduous leguminous shrub native to western and central Europe. In Great Britain and Ireland, the standard name is broom; this name is also used for other members of the Genisteae tribe, such as French broom or Spanish broom; and the term common broom is sometimes used for clarification. In other English-speaking countries, the most common name is "Scotch broom" (or Scots broom); however, it is known as English broom in Australia. Though this plant is native to Europe, it has spread to many other parts of

Erythroxylaceae (the coca family) is a family of flowering trees and shrubs consisting of 4 genera and 271 species, native to Africa and South America. The four genera are Aneulophus Benth., Erythroxylum P.Browne, Nectaropetalum Engl., and Pinacopodium Exell & Mendonça. The best-known species are the coca plants, including the species Erythroxylum coca, the source of the substance coca.

The Buxaceae are a small family of six genera and about 123 known species of flowering plants. They are shrubs and small trees, with a cosmopolitan distribution. A seventh genus, sometimes accepted in the past (Notobuxus), has been shown by genetic studies to be included within Buxus (Balthazar et al., 2000). The family is recognised by most taxonomists, and it is commonly known as the box family. However, its placement and circumscription has varied; some taxonomists treated Styloceras in its own family Stylocerataceae, Didymeles in its own family Didymelaceae, Haptanthus in Haptanthaceae

Bulbophyllum is a genus of mostly epiphytic and lithophytic orchids in the family Orchidaceae. It is the largest genus in the orchid family and one of the largest genera of flowering plants with more than 2,000 species, exceeded in number only by Astragalus. These orchids are found in diverse habitats throughout most of the warmer parts of the world including Africa, southern Asia, Latin America, the West Indies, and various islands in the Indian and Pacific Oceans. Orchids in this genus have thread-like or fibrous roots that creep over the surface of trees or rocks or hang from branches. The

Polypodiaceae is a family of ferns. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family includes around 65 genera and an estimated 1,650 species and is placed in the order Polypodiales, suborder Polypodiineae. A broader circumscription has also been used, in which the family includes other families kept separate in PPG I. Nearly all species are epiphytes, but some are terrestrial.

Jacaranda mimosifolia is a sub-tropical tree native to south-central South America that has been widely planted elsewhere because of its attractive and long-lasting violet-colored flowers. It is also known as the jacaranda, blue jacaranda, black poui, Nupur or fern tree. Older sources call it J. acutifolia, but modern authorities usually classify it as J. mimosifolia. In scientific usage, the name "jacaranda" refers to the genus Jacaranda, which has many other members, but in horticultural and everyday usage, it nearly always means the blue jacaranda. In its native range in the wild, J.

Vicia hirsuta (syn. Ervilia hirsuta) (hairy tare, hairy vetch, tiny vetch) is a species of flowering plant in the pea and bean family Fabaceae.

The Cabombaceae are a family of aquatic, herbaceous flowering plants. A common name for its species is water shield. The family is recognised as distinct in the Angiosperm Phylogeny Group IV system (2016). The family consists of two genera of aquatic plants, Brasenia and Cabomba, totalling six species.

The Bixaceae are a family of dicotyledonous plants commonly called the achiote family. Under the Cronquist system, the family was traditionally placed in the order Violales. However, newer arrangements move it, with some other families previously in the Violales, into the Malvales. Although small, this family includes trees, herbs, and shrubs. The plants are bisexual, and all species have five sepals. All plants within the Bixaceae produce a red, orange, or yellow latex.

The Balanophoraceae are a subtropical to tropical family of obligate parasitic flowering plants, notable for their unusual development and formerly obscure affinities. In the broadest circumscription, the family consists of 16 genera. Alternatively, three genera may be split off into the segregate family Mystropetalaceae. The plants are normally found growing on tree roots in moist inland forests and have an above ground inflorescence with the overall appearance of a fungus, composed of numerous minute flowers. The inflorescences develop inside the tuberous underground part of the plant,

Aspidistra is a genus of flowering plants in the family Asparagaceae, subfamily Convallarioideae, native to eastern and southeastern Asia, particularly China and Vietnam. They grow in shade under trees and shrubs. Their leaves arise more or less directly from ground level, where their flowers also appear. The number of species known has increased considerably from the 1980s onwards, with around 100 accepted as of July 2013. Aspidistra elatior is common worldwide as a foliage house plant that is very tolerant of neglect. It and other species can also be grown in shade outside, where they are

Byrsonima crassifolia is a species of flowering plant in the family Malpighiaceae, native to tropical America. Common names used in English include nance, maricao cimun, craboo, and golden spoon. In Jamaica it is called hogberry. The plant is valued for its small (between one, and one and a quarter centimeter in diameter) round, sweet yellow fruit, which is strongly scented. The fruits have a very pungent and distinct flavor and smell. When jarred, their texture resembles that of a green or kalamata olive.

Eurycoma longifolia (commonly called tongkat ali, Malaysian ginseng or long jack) is a flowering plant in the family Simaroubaceae. It is native to Indochina (Cambodia, Laos, Malaysia, Myanmar, Thailand and Vietnam) and Indonesia (the islands of Borneo and Sumatra), but has also been found in the Philippines. The plant is a medium-sized slender shrub that can reach 10 m (33 ft) in height, and is often unbranched. The root has been used in traditional medicine in Southeast Asia over centuries. It is also a widely used dietary supplement by bodybuilders, who believe that it increases

Nymphaea candida is a species of perennial, aquatic, rhizomatous herb in the family Nymphaeaceae native to the region spanning from Europe to Siberia and Western Himalaya.

Populus angustifolia, commonly known as the narrowleaf cottonwood, is a species of tree in the willow family (Salicaceae). It is native to western North America, where it is a characteristic species of the Rocky Mountains and the surrounding plains. It ranges north to the provinces of Alberta and Saskatchewan in Canada and south to the states of Chihuahua, Coahuila, and Sonora in Mexico. Its natural habitat is by streams and creeks between 3,900 to 7,900 feet (1,200 to 2,400 m) elevation.

Cicerbita alpina, commonly known as the alpine sow-thistle or alpine blue-sow-thistle is a perennial herbaceous species of plant formerly placed in the genus Lactuca as Lactuca alpina. It is native to upland and mountainous parts of Europe. It was once used as an herb in Sami cooking, and known as jierja.

Cicerbita is a genus of flowering plants in the family Asteraceae, native to Asia and Europe. They are known commonly as blue sow thistles. The word Cicerbita is from the Italian, meaning "chickory-like", a comparison to Cichorium, the chicory genus.

Catasetum, abbreviated as Ctsm. in horticultural trade, is a genus of showy epiphytic Orchids, family Orchidaceae, subfamily Epidendroideae, tribe Cymbidieae, subtribe Catasetinae, with currently 200 accepted species, many of which are highly prized in horticulture. Species of the genus Catasetum occur from Mexico to Argentina, including much of Central America, the West Indies, and South America. The largest number of species is in Brazil.

Rorippa amphibia, also known as great yellow-cress, is a plant species in the family Brassicaceae. The flowers are visited by many types of insects, and can be characterized by a generalized pollination syndrome.

Calicotome spinosa, the thorny broom or spiny broom, is a very spiny, densely branched shrub of the family Fabaceae which can reach up to three metres in height. It grows in the Western Mediterranean region on sunny slopes and dry, rocky ground. It is found in Spain, France, Italy, Croatia, Morocco, Tunisia, Libya, Algeria and Turkey, and it has been introduced to New Zealand. From March to June it produces bright yellow flowers which are borne singly or in small clusters. The seed-pods are 30mm long and are almost hairless, unlike those of the similar species Calicotome villosa.

Nemophila is a genus found in the flowering plant family Hydrophyllaceae. Most of the species in Nemophila contain the phrase "baby blue eyes" in their common names. N. menziesii has the common name of "baby blue eyes". N. parviflora is called the "smallflower baby blue-eyes" and N. spatulata is called the "Sierra baby blue eyes". An exception to this naming tendency is N. maculata, whose common name is fivespot. Nemophila species are mainly native to the western United States, though some species are also found in Mexico, and in the southeastern United States. They are commonly offered for

Chusquea is a genus of evergreen bamboos in the grass family. Most of them are native to mountain habitats in Latin America, from Mexico to southern Chile and Argentina. They are sometimes referred to as South American mountain bamboos. Unlike most other grasses, the stems of these species are solid, not hollow. Some animals are, to various extents, associated with stands of Chusquea, for example the Inca wren, monito del monte, and the plushcap.

Chimonanthus praecox, also known as wintersweet and Japanese allspice, is a species of flowering plant in the genus Chimonanthus of the family Calycanthaceae. The plant is native to China and is known as làméi (蠟梅) in Chinese. It is also grown in Iran, where it is called gol-e yakh (گل‌یخ) or "ice flower" in Persian. The plant is a vigorous deciduous shrub growing to 4 m (13 ft) tall with an erect trunk and leaves 5–29 cm (2–11 in) long and 2–12 cm (1–5 in) broad. Its strongly scented pendent flowers, produced in winter (between November and March in UK,) on bare stems, have 15-21 yellow or

Launaea is a genus of flowering plants in the family Asteraceae. Species

Ceratophyllaceae is a cosmopolitan family of flowering plants including one living genus commonly found in ponds, marshes, and quiet streams in tropical and in temperate regions. It is the only extant family in the order Ceratophyllales. Species are commonly called coontails or hornworts, although hornwort is also used for unrelated plants of the division Anthocerotophyta. Living Ceratophyllum grows completely submerged, usually, though not always, floating on the surface, and does not tolerate drought.