Plants named in 1817

Asimina triloba, the American papaw, pawpaw, paw paw, or paw-paw, among many regional names, is a species of small deciduous tree. It has large leaves and produces a large, yellowish-green to brown fruit. The species is native to eastern North America, in a more temperate range than its tropical relatives. It is a patch-forming (clonal) understory tree of hardwood forests, being found in well-drained, deep, fertile bottomland and also hilly upland habitat. Although much of the plant contains the neurotoxin annonacin, the ripe fruits are edible. They are sweet, with a custard-like texture and

Myricaceae is a small family of dicotyledonous shrubs and small trees in the order Fagales. Its type genus is Myrica, the sweet gales. There are three genera in the family, although some botanists separate many species from Myrica into a fourth genus Morella. About 55 species are usually accepted in Myrica (with Morella included), one in Canacomyrica, and one in Comptonia. Well-known members of this family include bayberry and sweetfern. Canacomyrica Guillaumin 1940 Comptonia L'Hér. 1789 Myrica L. 1753 (includes Morella Lour. 1790)

Platanthera bifolia, commonly known as the lesser butterfly-orchid, is a species of orchid in the genus Platanthera, having certain relations with the genus Orchis, where it was previously included and also with the genus Habenaria. It is a Palaearctic species occurring from Ireland in the west, across Europe and Asia to Korea and Japan. It is also found in North Africa. The name Platanthera is derived from Greek, meaning 'broad anthers', while the species name, bifolia, means 'two leaves'.

Anacamptis pyramidalis, the pyramidal orchid, is a perennial herbaceous plant belonging to the genus Anacamptis of the family Orchidaceae. The scientific name Anacamptis derives from Greek ανακάμτειν 'anakamptein' meaning 'bend forward', while the Latin name pyramidalis refers to the pyramidal form of the inflorescence.

The genus Platanthera belongs to the subfamily Orchidoideae of the family Orchidaceae, and comprises about 150 species of orchids. The members of this genus, known as the butterfly orchids or fringed orchids, were previously included in the genus Orchis, which is a close relative (along with the genus Habenaria). They are distributed throughout the temperate regions of the Northern Hemisphere. They are terrestrial and have tubercules. The genomes of Platanthera zijinensis and Platanthera guangdongensis have been sequenced as model species to study partial and full mycoheterotrophy.

Neottia nidus-avis, the bird's-nest orchid, is a non-photosynthetic orchid, native to Europe, Russia, with sporadic presence in North-Africa, and some parts of the Middle East.

Anacamptis is a genus of flowering plants in the orchid family (Orchidaceae); it is often abbreviated as Ant in horticulture. This genus was established by Louis Claude Richard in 1817; the type species is the pyramidal orchid (A. pyramidalis) and it nowadays contains about one-third of the species placed in the "wastebin genus" Orchis before this was split up at the end of the 20th century, among them many that are of hybrid origin. The genus' scientific name is derived from the Greek word anakamptein, meaning "to bend backwards". These terrestrial orchids occur on grasslands, limestone or

Liparis, commonly known as widelip orchids, sphinx orchids or 羊耳蒜属 (yáng'ěrsuàn shǔ) is a cosmopolitan genus of more than 350 species of orchids in the family Orchidaceae. Plants in this genus are terrestrial, lithophytic or epiphytic herbs with a wide range of forms. The flowers are usually resupinate and small to medium sized, yellow, yellow-green or purplish with spreading sepals and petals. The labellum is usually larger than the sepals and petals and is lobed, sometimes with a toothed or wavy margin and one or two calli at its base.

Cephalanthera rubra, known as red helleborine, is an orchid found in Europe, North Africa and southwest Asia. Although reasonably common in parts of its range, this Cephalanthera has always been one of the rarest orchids in Britain.

Magnolia kobus, known as mokryeon, kobus magnolia, or kobushi magnolia, is a species of Magnolia native to Japan (Kyushu, Honshu, and Hokkaido) and Korea and occasionally cultivated in temperate areas. It is a deciduous, small to tall tree which has a slow rate of growth but can reach 8–15 m (25–50 ft) in height and up to 10 m (35 ft) in spread.

Spiranthes is a genus of orchids in the subfamily Orchidoideae. They are known commonly as ladies tresses, ladies'-tresses, or lady's tresses. The genus is distributed in the Americas, Eurasia, and Australia. The genus name Spiranthes is derived from the Greek speira ("coil") and anthos ("flower"), and was inspired by the spirally arranged inflorescence.

Neottia cordata, the lesser twayblade or heartleaf twayblade, is an orchid of upland bogs and mires. It was formerly placed in the genus Listera, but molecular phylogenetic studies have shown that Neottia nidus-avis, the bird's-nest orchid, evolved within the same group. It is never very common but may be frequently overlooked because of its small size and a tendency to grow underneath heather on sphagnum moss.

Liparis loeselii, the fen orchid, yellow widelip orchid, or bog twayblade, is a rare species of orchid. It is native to Europe, northern Asia, the eastern United States, and eastern Canada. It grows in fens, bogs and dune slacks. It has yellow flowers and glossy yellow-green leaves. It only grows to 5-20 centimetres. The lower part of the stem is surrounded by 2-3 relatively large light green, fatty leaves, tongue-like in appearance. Under these, a few inconspicuous small leaves can be found. The yellow-green flowers are normally numbered between 5-10. Sometimes only 1-2 flowers can be found,

Chimaphila umbellata, the umbellate wintergreen, pipsissewa, or prince's pine, is a small perennial flowering plant found in dry woodlands, or sandy soils. It is native throughout the cool temperate Northern Hemisphere.

Abies fraseri, commonly known as Fraser's fir, or Fraser fir, is an endangered species of fir native to the Appalachian Mountains of the southeastern United States. It is endemic to the Appalachian Mountains, where it grows in 48 populations on seven montane regions in the range.

Frankenia (sea heath) is the only genus in the Frankeniaceae family of flowering plants. Other genera have been recognized within the family, such as Anthobryum, Hypericopsis and Niederleinia, but molecular phylogenetic studies have consistently shown that they all belong inside Frankenia. Frankenia comprises about 70–80 species of shrubs, subshrubs and herbaceous plants, adapted to saline and dry environments throughout temperate and subtropical regions. A few species are in cultivation as ornamental plants.

Eleocharis acicularis is a species of spikesedge known by the common names needle spikerush and least spikerush. It is widespread across Europe, central and southeastern Asia, North America and northeastern South America as far south as Ecuador. It is also found in Australia, where it is probably an introduced species. Eleocharis acicularis is an annual or perennial spikesedge with long, grasslike stems to about 15 centimeters (6 inches) in height, shorter in bog conditions, from a creeping rhizome. In shallow water it will form short spikes of tiny flowers amongst flat overlapping bracts.

Eleocharis palustris, the common spike-rush, creeping spike-rush or marsh spike-rush, is a species of mat-forming perennial flowering plants in the sedge family Cyperaceae. It grows in wetlands in Europe, North Africa, northern and central Asia (Siberia, China, Mongolia, Iran, Nepal, etc.) and North America (United States, Canada, Greenland, northern Mexico). Eleocharis palustris is not easily distinguished from other closely related species and is extremely variable worldwide itself. The species epithet palustris is Latin for "of the marsh" and indicates its common habitat.

Setaria pumila is a species of grass known by many common names, including yellow foxtail, yellow bristle-grass, pigeon grass, and cattail grass. It is native to Europe, but it is known throughout the world as a common weed. It grows in lawns, sidewalks, roadsides, cultivated fields, and many other places. This annual grass grows 20 centimetres (8 inches) to well over 1 metre (1 yard) in height, its mostly hairless stems ranging from green to purple-tinged in color. The leaf blades are hairless on the upper surfaces, twisting, and up to 30 centimetres (12 inches) long. The inflorescence is a

Spiranthes aestivalis, commonly called the summer lady's-tresses, is a species of orchid found in western Europe, Turkey, Russia, and North Africa. The specific epithet, aestivalis, is derived from Latin and means "pertaining to the summer". It has become locally extinct in the British Isles.

Annona purpurea is an edible fruit and medicinal plant in the Annonaceae family. It is native to central and southern Mexico, Central America, Colombia, Ecuador, and Venezuela in northwestern South America, and Trinidad. Its common names include soncoya, sincuya, and cabeza de negro.

Monodora is a genus of plant in family Annonaceae. It contains approximately 15 species, distributed throughout tropical Africa.

Gymnadenia odoratissima, the short spurred fragrant orchid, is a species of orchid. It is in the genus Gymnadenia.

Telekia is a genus of flowering plant, of the family Asteraceae. Species Telekia speciosa (Schreb.) Baumg. - Europe + southwest Asia from France and Great Britain to Caucasus Telekia speciosissima DC. 1836 conserved name, not (L.) Less. 1832 - Lombardy region of Italy formerly included Telekia africana Hook.f. - Anisopappus chinensis subsp. africanus (Hook.f.) S.Ortiz & Paiva Telekia speciosissima (L.) Less. 1832, not DC. 1836 - Xerolekia speciosissima (L.) Anderb.

Symplocarpus foetidus, commonly known as skunk cabbage or eastern skunk cabbage (also swamp cabbage, clumpfoot cabbage, or meadow cabbage, foetid pothos or polecat weed), is a low-growing plant that grows in wetlands and moist hill slopes of eastern North America. Bruised leaves present an odor reminiscent of skunk. Symplocarpus combines the Greek word symploce, meaning "connection" and carpos, meaning "fruit", to indicate that the plant has a compound fruit. Linnaeus gave the plant its species name of foetidus, Latin for "bad-smelling". The plant produces a strong odor, which is repulsive to

Telekia speciosa, also known as the heart-leaved oxeye or yellow oxeye, is a species of flowering plant within the family Asteraceae.

Monodora myristica, the calabash nutmeg or African nutmeg, is a tropical tree of the family Annonaceae or custard apple family of flowering plants. It is native to tropical Africa from Sierra Leone in the west to Tanzania. In former times, its seeds were widely sold as an inexpensive nutmeg substitute. This is now less common outside its region of production. Other names of calabash nutmeg include Jamaican nutmeg, ehuru, ariwo, awerewa, ehiri, airama, African orchid nutmeg, muscadier de Calabash lubushi, and pebe or pebbe.

Clematis montana, the mountain clematis, also Himalayan clematis or anemone clematis, is a flowering plant in the buttercup family Ranunculaceae. A vigorous deciduous climber, in late spring it is covered with a mass of small blooms for a period of about four weeks. The odorous flowers are white or pink, four-petalled, with prominent yellow anthers. It is native to mountain areas of Asia from Afghanistan to Taiwan.

Alnus acuminata is a species of deciduous tree in the Betulaceae family. It is found in montane forests from central Mexico to Argentina.

Symplocarpus is a genus of flowering plants in the family Araceae, native to United States, Canada and eastern Asia. The genus is characterized by having large leaves and deep root systems with contractile roots used for changing the plant's level with the ground. Symplocarpus species grow from a rhizome and their leaves release a foul odor when crushed. The best known species is Symplocarpus foetidus, commonly called "skunk cabbage".