Plants named in 1864

Chamaecyparis lawsoniana, known as Port Orford cedar or Lawson's cypress, is a species of conifer in the genus Chamaecyparis, family Cupressaceae. It is native to Oregon and northwestern California, and grows from sea level up to 1,500 metres (4,900 ft) in the valleys of the Klamath Mountains, often along streams.

Campsis radicans, the trumpet vine, yellow trumpet vine, or trumpet creeper (also known in North America as cow-itch vine or hummingbird vine), is a species of flowering plant in the trumpet vine family Bignoniaceae, native to eastern North America, and naturalized elsewhere. Growing to 10 metres (33 feet), it is a vigorous, deciduous woody vine, notable for its showy trumpet-shaped flowers. It inhabits woodlands and riverbanks, and is also a popular garden plant.

The mountain papaya (Vasconcellea pubescens) also known as mountain pawpaw, papayuelo, chamburo, or simply "papaya" is a species of the genus Vasconcellea, native to the Andes of northwestern South America from Colombia south to central Chile, typically growing at altitudes of 1,500–3,000 metres (4,900–9,800 ft). It has also been known as Carica pubescens.

Xeronema is a genus of flowering plants containing two species, Xeronema moorei from New Caledonia, and Xeronema callistemon (the Poor Knights lily) from the Poor Knights Islands and Taranga Island in New Zealand. The plants are herbaceous monocots, spreading by rhizomes, and have large flowers set on terminal spikes, with stamens towering above the flowers. The type species X. moorei is found in the mountains of New Caledonia. The Poor Knights lily (X. callistemon) is endemic to the Poor Knights Islands and Taranga Island in the north of New Zealand. It was discovered in 1924. The Poor

Catopsis is a genus in the botanical family Bromeliaceae, subfamily Tillandsioideae. The genus name is from the Greek “kata” (hanging down) and “opsis” (appearance). Catopsis is a genus of plants widespread across much of Latin America from Mexico to Brazil, plus Florida and the West Indies. One of the species, Catopsis berteroniana, is thought to be carnivorous.

Agave fourcroydes or henequen is a species of flowering plant in the family Asparagaceae, native to southern Mexico and Guatemala. It is reportedly naturalized in Italy, Madeira, in the Canary and Cayman Islands, Hispaniola, the Lesser Antilles, and Cuba, and in Costa Rica.

Acer cissifolium (vine-leafed maple, vineleaf maple, and variations thereof; Japanese: ミツデカエデ, romanized: mitsudekaede) is a maple native to Japan, from southern Hokkaidō south through Honshū and Shikoku to Kyūshū. It is a deciduous small tree or large shrub growing to 5–10 m (rarely 15 m) in height, with smooth grey bark. The young shoots are green, often tinged pink, hairy at first with whitish hairs, becoming grey in the second year. The leaves are trifoliate, with a very slender red petiole up to 10 cm long; the three leaflets are 4–10 cm long and 2–4 cm broad, with 1–2 cm petiolules, and

Littorella uniflora (vernacular name: (American) shoreweed) is a species of aquatic flowering plant native to the Azores, Morocco, most of Europe excluding the dry southeast, Iceland, and the Faroes. It prefers to live mostly submerged in nutrient-poor freshwater habitats. When submerged, it draws CO2 mostly through its roots and uses a mix of crassulacean acid metabolism (CAM) and C3 carbon fixation for photosynthesis. If the water level drops and exposes the roots, it ceases using CAM.

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Dendrophylax is a genus of leafless neotropical orchids (family Orchidaceae) native to Mexico, Central America, the West Indies, and Florida. The name is from Greek δένδρον ("tree") and φύλαξ ("guard; keeper"). One species, Dendrophylax lindenii, featured heavily in the book The Orchid Thief.

Camphora parthenoxylon is an evergreen tree in the genus Camphora, 10–20 m (33–66 ft) tall. It is native to South and East Asia (Bhutan, Myanmar, Cambodia, China, Hong Kong, India, Indonesia, Laos, Malaysia, Nepal, Philippines, Thailand, and Vietnam).

Quercus wislizeni, known by the common name interior live oak, is an evergreen oak, highly variable and often shrubby, found in western North America.

Libocedrus bidwillii, also called pāhautea, kaikawaka or New Zealand cedar, is a species of Libocedrus, endemic to New Zealand. It is in the cypress family Cupressaceae.

Maclura tricuspidata is a tree native to East Asia, occasionally grown for its fruit, somewhat similar to that of the related mulberry (Morus spp.).

Allium hookeri is a plant species native to India, Sri Lanka, Myanmar (Burma), Bhutan, and southwestern China (Sichuan, Tibet and Yunnan). Common names include Hooker chives and garlic chives. Allium hookeri produces thick, fleshy roots and a cluster of thin bulbs. Scapes are up top 60 cm tall. Leaves are flat and narrow, about the same length as the scapes but only 1 cm across. Umbels are crowded with many white or greenish-yellow flowers.

Acer diabolicum, the horned maple or devil maple, is a species of maple that is endemic to central and southern Japan. There it is known as カジカエデ, kaji kaede or オニモミジ, oni‑momiji, and is planted as an ornamental. It is occasionally planted as an ornamental outside Japan. It gets its specific epithet and its common names from the hornlike appearance of the two protruding curly stigmas of its flowers, which are retained on its winged seeds.

Acacia harpophylla, commonly known as brigalow, brigalow spearwood, orkor or ogarah, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a tree with sickle-shaped phyllodes, spherical heads of golden yellow flowers and subterete straight to slightly curved pods, slightly raised over and constricted between the seeds. The Gamilaraay peoples know the tree as barranbaa or burrii.It is found in central and coastal Queensland to northern New South Wales. It can reach up to 25 m (82 ft) tall and forms extensive open-forest communities on clay soils.

Ranunculus lyallii (Mountain buttercup, Mount Cook buttercup, or, although not a lily, Mount Cook lily), is a species of Ranunculus (buttercup), endemic to New Zealand, where it occurs in the South Island and on Stewart Island at altitudes of 700–1,500 m. R. lyallii is the largest species in the genus Ranunculus, growing over a metre in height. The species was discovered by David Lyall, (1817–1895), a noted Scottish botanist and doctor. Contemporary botanist Sir Joseph Hooker, (1817–1911), noted in his Flora Antarctica: Among his many important botanical discoveries in this survey was that of

Phyllanthus mirabilis is a plant species of family Phyllanthaceae and is native to Thailand, Laos and Myanmar. It is one of the only four Phyllanthus to be caudiciform and one of the only two caudiciform Phyllanthus to be described, with the other being Phyllanthus kaweesakii. The leaves fold together at night. Wild plants are found on limestone mountains and cliffs.

Nechamandra is a monotypic genus of an aquatic plant family Hydrocharitaceae. The sole species is Nechamandra alternifolia. It is found in slow moving fresh water.

Eulychnia acida is a flowering plant in the family Cactaceae that is found in Chile.

Drosera adelae, commonly known as the lance-leaved sundew, is a carnivorous plant in the genus Drosera that is endemic to Queensland, Australia.

Cymbidium tigrinum is a species of orchid. It is found in the Yunnan province of China, Myanmar and northeast India.

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Arachnitis uniflora, the sole species in the genus Arachnitis, is a non-photosynthetic plant species in the family Corsiaceae. This species is mycoheterotrophic, and it obtains carbon from mycorrhizal fungi of the family Glomeraceae which are associated to its roots. A. uniflora is native to southern South America (Bolivia, Chile, Argentina) and the Falkland Islands.

Acacia cyperophylla, commonly known as creekline miniritchie, red mulga, or mineritchie is a species of flowering plant in the family Fabaceae and is endemic to northern Australia. It is a shrub or usually a tree with minni ritchi bark, straight or slightly curved phyllodes with a sharp point on the end, spikes of pale yellow flowers and narrowly oblong to linear, more or less woody pods.

Quercus oxyodon is a tree species in the beech family Fagaceae. It is native to the Himalayas (Nepal, Sikkim, Bhutan, Assam, Tibet, Myanmar) and to the mountains of southern China (Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Yunnan, Zhejiang) and the Sa Pa region of northern Vietnam (as Q. songtavanensis). It is placed in the subgenus Cerris, section Cyclobalanopsis. Quercus oxyodon is a tree up to 20 m tall. Leaves can be as much as 220 mm long.

Quercus benthamii is a species of oak in the family Fagaceae. It is native to the cloud forests of Central America and southern Mexico. It is threatened by habitat loss.

Grosourdya is a genus of flowering plants from the orchid family, Orchidaceae. As of May 2022, it contains 26 known species, native to Southeast Asia. Grosourdya appendiculata (Blume) Rchb.f. - widespread from Hainan to the Andaman Islands to the Philippines and Maluku Grosourdya bicornuta J.J.Wood & A.L.Lamb - Sabah Grosourdya bigibba (Schltr.) Kocyan & Schuit. Grosourdya callifera Seidenf. - Thailand Grosourdya ciliata (Ridl.) Kocyan & Schuit. Grosourdya decipiens (J.J.Sm.) Kocyan & Schuit. Grosourdya emarginata (Blume) Rchb.f. Grosourdya fasciculata (Carr) Kocyan & Schuit. Grosourdya

Filicium is a genus of flowering plants in the soapberry family Sapindaceae, native to east Africa, Madagascar, India and Sri Lanka. The best known species is Filicium decipiens, which is planted as an ornamental tree.