Plants named in 1863

Pinus heldreichii, the Bosnian pine or Heldreich's pine, is a species of pine native to mountainous regions of Southeast Europe and, to lesser extent, mountainous southern Italian peninsula.

Picea engelmannii, with the common names Engelmann spruce, mountain spruce, and silver spruce, is a species of spruce native to western North America. It is highly prized for producing distinctive tone wood for acoustic guitars and other instruments, it is mostly a high-elevation mountain tree but also appears in watered canyons.

Abies magnifica, the red fir or silvertip fir, is a western North American fir, native to the mountains of southwest Oregon and California in the United States. It is a high-elevation tree, typically occurring at 1,400–2,700 metres (4,600–8,900 ft) elevation, though only rarely reaching tree line. The name red fir derives from the bark color of old trees.

Euphorbia resinifera, the resin spurge, is a species of spurge native to Morocco, where it occurs on the slopes of the Atlas Mountains. The dried latex of the plant was used in ancient medicine. It contains resiniferatoxin, an extremely potent capsaicin analog tested as an analgesic since 1997.

Pyrostegia venusta, also commonly known as flamevine or orange trumpet vine, is a plant species of the genus Pyrostegia of the family Bignoniaceae originally native to southern Brazil, Bolivia, northeastern Argentina and Paraguay; today, it is also a widely cultivated garden species.

Larix lyallii, the subalpine larch, or simply alpine larch, is a deciduous, coniferous tree native to northwestern North America. It lives at high altitudes, from 1,500 to 2,900 meters (4,900 to 9,500 ft), in the Rocky Mountains of Idaho, Montana, British Columbia, and Alberta. There is a disjunct population in the Cascade Range of Washington. Subalpine larch is hardy and can survive at low temperatures and on thin rocky soils, often being found near the tree line. It can grow in a variety of soils as long as the soil is moist but well drained. However, it is relatively shade intolerant.

Eucalyptus diversicolor, commonly known as karri, is a species of flowering plant in the family Myrtaceae and is endemic to the south-west of Western Australia. It is a tall tree with smooth light grey to cream-coloured, often mottled bark, lance-shaped adult leaves and barrel-shaped fruit. Found in higher rainfall areas, karri is commercially important for its timber.

Artemisia cina, commonly known as santonica (zahr el shieh el -khorasani), Levant wormseed, and wormseed, is an Asian species of herbaceous perennial in the daisy family. Its dried flowerheads are the source of the vermifugic drug santonin since ancient times. Its common names arise from its known ability to expel worms. The powder is grayish-green in colour with an aromatic odour and a bitter taste. Dysphania ambrosioides is another plant with the common name wormseed, called epazote in Mexican cuisine. The plant is characterised by its spherical pollen grains, which are typical in the

The genus Bowenia includes two living and two fossil species of cycads in the family Stangeriaceae, sometimes placed in their own family Boweniaceae. They are entirely restricted to Australia.

Oplopanax is a small genus of flowering plants in the family Araliaceae, consisting of three species of deciduous shrubs, native to western North America and northeastern Asia. Oplopanax is closely related to the Asian genus Fatsia.

Wullschlaegelia is a genus of orchids, (family Orchidaceae), consisting of two species in the Caribbean Islands and to much of Latin America from southern Mexico to northern Argentina. These are myco-heterotrophic plants, lacking chlorophyll and subsisting entirely on nutrients obtained from soil fungi. The genus has previously been included in the tribe Calypsoeae, but is now included as the only genus in the tribe Wullschlaegelieae, pending further study. Wullschlaegelia aphylla (Sw.) Rchb. - West indies, Mexico, Central America, much of South America Wullschlaegelia calcarata Benth. -

Thunbergia erecta is a herbaceous perennial climbing plant species in the genus Thunbergia native to western Africa. Common names include bush clockvine, king's-mantle and potato bush.

Sarracenia alata, also known as yellow trumpets, pale pitcher plant or pale trumpet, is a carnivorous plant in the genus Sarracenia. Specifically, S. alata is an endemic species to North America; it is native to the southeastern regions of the United States, including parts of the Gulf Coast states.

Quercus vacciniifolia (sometimes spelled Q. vaccinifolia), the huckleberry oak, is a member of the Protobalanus section of genus Quercus. It has evergreen foliage, short styles, very bitter acorns that mature in 18 months, and a woolly acorn shell interior.

Echeveria agavoides, or 'lipstick' echeveria, is a species of succulent flowering plant of the stonecrop (sedum) family Crassulaceae, native to the rocky canyons and arid hillsides of Central Mexico. It is primarily known from the states of Aguascalientes, Durango, Guanajuato, Hidalgo, Jalisco, Querétaro, San Luis Potosí and Zacatecas, though it has been sighted as far north as Coahuila and as far south as Oaxaca.

Bowenia spectabilis is a species of cycad in the family Stangeriaceae. It is endemic to Queensland, Australia. Its natural habitat is subtropical or tropical moist lowland forests.

Tricyrtis hirta (ほととぎすそう, Hototogisu-sou), the toad lily or hairy toad lily, is a Japanese species of hardy herbaceous perennial plant in the lily family Liliaceae. It is found growing on shaded rocky cliffs and stream banks in central and southern Japan. Leaves are large and wide, clasping around the stem. The flowers are whitish to pale purple with dark purple spots. Varieties Tricyrtis hirta var. hirta - central and southern Japan Tricyrtis hirta var. masamunei (Makino) Masam - Kyushu

Rhinanthus glacialis, commonly known as the aristate yellow rattle or glacier rattle, is a herbaceous plant species in the family Orobanchaceae, formerly classified as a member of the family Scrophulariaceae. This European species is primarily inhabiting the Central Europe.

Chytroglossa is a genus of flowering plants from the orchid family, Orchidaceae. It contains three recognized species, all endemic to southeastern Brazil.

Amydrium is a genus of primarily epiphytic, climbing plants in the arum and aroid family Araceae, that is native to Southeast Asia, South China and New Guinea. Amydrium is distinguished from other members of the tribe Monstereae by having two ovules in each ovary. The seeds tend to be heart shaped. Similar to other aroid genera, the leaves of Amydrium often have perforated leaves. Amydrium hainanense (H.Li, Y.Shiao & S.L.Tseng) H.Li - Guangdong, Guangxi, Hainan, Hunan, Yunnan and Vietnam. Amydrium humile Schott - Peninsular Malaysia and Sumatra. Amydrium medium (Zoll. & Moritzi) Nicolson -

Acacia alpina, commonly known as alpine wattle is a species of flowering plant in the family Fabaceae and is endemic to alpine and subalpine regions of south-eastern continental Australia. It is an erect or spreading shrub or tree with egg-shaped or broadly egg-shaped phyllodes with the narrower end towards the base, flowers arranged in 1 or 2 racemes in the axils of phyllodes, each with cylindrical to oblong, usually pale yellow flowers, and thin-walled, gently curved or coiled pods 30–80 mm (1.2–3.1 in) long.

Devil's club or Devil's walking stick (Oplopanax horridus, Araliaceae; syn. Echinopanax horridus, Fatsia horrida) is a large understory shrub native to the rainforests of the Pacific Northwest, but also disjunct on islands in Lake Superior. It is noted for its large palmate leaves and erect, woody stems covered in noxious and irritating spines. It is also known as Alaskan ginseng and similar names, although it is not a true ginseng. In Tlingit it is known as S’áxt’.

Eusideroxylon is a genus of evergreen trees of the family Lauraceae. The genus is monotypic, and includes one accepted species, Eusideroxylon zwageri. The species is commonly known as Bornean ironwood, or by the Malay names belian and ulin. It is predominantly found in Borneo and Sumatra, where it grows in lowland rain forests, but is also thought to inhabit the Philippines. Eusideroxylon are hardwood trees reaching up to 50 metres (160 ft) in height with trunks over 2 metres (6 ft 7 in) in diameter, producing commercially valuable timber. The wood of E. zwageri is impervious to termites, and

Eurystyles is a genus of flowering plants from the orchid family, Orchidaceae, native to South America, Central America, the West Indies and Chiapas. As of December 2025, Plants of the World Online accepts the following 23 species:

Dicranum viride is a species of moss belonging to the family Dicranaceae. It is native to Northern Hemisphere, including Japan.

Castanopsis indica is a tree in the family Fagaceae.

Ranunculus adoneus, the alpine buttercup or snow buttercup, is a species of flowering plant. It is an alpine buttercup from the family Ranunculaceae. This species is mainly found in the Rocky Mountains in Colorado and Wyoming but can also be found in Idaho, northern Utah and eastern Nevada. Its typical habitat is short grass meadows near the edge of melting snow.

Pilularia minuta is a species of fern in the family Marsileaceae. It is an ephemeral species that relies on seasonal flooding. Though widely distributed across the Mediterranean basin, it is considered an endangered species due to habitat fragmentation.

Phyllanthus pulcher, the tropical leaf-flower, is a species in the genus Phyllanthus. Phyllanthus pulcher is known commonly as a weed. Its leaves fold closed at night (an example of Nyctinasty).

Osmoxylon is a genus of flowering plants in the family Araliaceae.