Johann Jacob Roemer

Swiss biologist (1763-1819).

Johann Jacob Roemer (8 January 1763, Zürich – 15 January 1819) was a Swiss physician and professor of botany in Zürich, Switzerland. He was also an entomologist. With Austrian botanist Joseph August Schultes, he published the 16th edition of Carl Linnaeus' Systema Vegetabilium. Roemer's Genera insectorum is a Swiss publication on entomology. The hand-coloured plates were drawn and engraved by the Swiss artist J.R. Schellenberg, an entomologist himself and therefore familiar with structural details. In 1793, he was elected a foreign member of the Royal Swedish Academy of Sciences. The botanica

Abbreviations: Roem.
Occupations: university teacher, physician, entomologist, botanist
Citizenships: Switzerland
Languages: German
Dates: 1763-01-08T00:00:00Z – 1819-01-15T00:00:00Z
Birth place: Zurich
Direct attributions: 287 plants, 0 fungi
Authorship mentions: 368 plants, 0 fungi

287 plants attributed, 81 plants contributed to368 plants:

Adenium (Desert Rose) Roem. & Schult. 1819
plant genus in the apocynaceae family
Adenium is a genus of flowering plants in the family Apocynaceae first described as a genus in 1819. It is native to Africa and the Arabian Peninsula.
Calystegia soldanella (Sea Bindweed) (L.) Roem. & Schult. 1810
medicinal plant species in the convolvulaceae family
Calystegia soldanella (syn. Convolvulus soldanella) is a species of bindweed known by various common names such as sea bells, sea bindweed, seashore false bindweed, shore bindweed, shore convolvulus and beach morning glory.
Adenium obesum (Desert-rose) (Forssk.) Roem. & Schult. 1819
plant species in the apocynaceae family
Adenium obesum, more commonly known as a desert rose, is a poisonous species of flowering plant belonging to the tribe Nerieae of the subfamily Apocynoideae of the dogbane family, Apocynaceae. It is native to the Sahel regions south of the Sahara (from Mauritania and Senegal to Sudan), tropical and subtropical eastern and southern Africa, as well as the Arabian Peninsula. Other names for the flower include Sabi star, kudu, mock azalea, and impala lily. Adenium obesum is a popular houseplant and bonsai in temperate regions.
Eleocharis acicularis (Needle Spike-rush) (L.) Roem. & Schult. 1817
perennial plant species in the cyperaceae family
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.
Tabernaemontana divaricata (Pinwheel Flower) (L.) R.Br. ex Roem. & Schult. 1819
medicinal plant species in the apocynaceae family
Tabernaemontana divaricata, commonly called pinwheel flower, crape jasmine, Ceylon jasmine, East India rosebay, and Nero's crown, is an evergreen shrub or small tree native to South Asia, Southeast Asia and China. In zones where it is not hardy it is grown as a house/glasshouse plant for its attractive flowers and foliage. The stem exudes a milky latex when broken, whence comes the name milk flower.
Eleocharis palustris (Common Spikerush) (L.) Roem. & Schult. 1817
perennial plant species in the cyperaceae family
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 (Yellow Bristle Grass) (Poir.) Roem. & Schult. 1817
annual and perennial plant species in the poaceae family
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
Myosotis stricta (Strict Forget-me-not) Link ex Roem. & Schult. 1819
annual plant species in the boraginaceae family
Myosotis stricta is a plant species of the genus Myosotis. Common names include strict forget-me-not and blue scorpion grass.
Heteropogon contortus (Tanglehead) (L.) P.Beauv. ex Roem. & Schult. 1817
perennial and medicinal plant species in the poaceae family
Heteropogon contortus is a tropical, perennial tussock grass with a native distribution encompassing Southern Africa, southern Asia, Northern Australia, Oceania, and southwestern North America. The species has also become a naturalised weed in tropical and subtropical regions in the Americas and East Asia. The plant grows to 1.5 metres (4.9 ft) in height and is favoured in most environments by frequent burning. The plants develop characteristic dark seeds with a single long awn at one end and a sharp spike at the other. The awn becomes twisted when dry and straightens when moistened, and in
Tripogon (Fiveminute Grass) Roem. & Schult. 1817
plant genus in the poaceae family
Tripogon is a genus of tropical and subtropical plants in the grass family. They are widespread across Asia, Africa, Australia, and the Americas. Fiveminute grass is a common name for plants in this genus. Recently, a new species Tripogon fibrosissimus Landge & Manoj Chandran was described from Gandikota Hills, a botanically under explored locality in Kadapa district of Andhra Pradesh, South India. The species is characterised by having 2-flowered spikelets and shares morphological similarities with two Afro-Arabian congeners viz., T. africanus (Coss. & Durieu) H. Scholz. & P. Konig and T.
Ipomoea asarifolia (Ginger-leaf Morning-glory) (Desr.) Roem. & Schult. 1819
plant species in the convolvulaceae family
Ipomoea asarifolia, known as the ginger-leaf morning-glory, is a species of plant in the family Convolvulaceae, of the genus Ipomoea. It is a scrambling subshrub native to the tropical Americas, tropical Africa, India, Sri Lanka, Indochina, Java, and the Lesser Sunda Islands.
Eleocharis ovata (Ovate Spikerush) (Roth) Roem. & Schult. 1817
annual plant species in the cyperaceae family
Eleocharis ovata, the ovate spikerush, is a species of annual grass in the family Cyperaceae (sedges). They have a self-supporting growth form and have simple, broad leaves and green flowers. Individuals can grow to 1.5 feet.
Angostura Roem. & Schult. 1819
plant genus in the rutaceae family
Angostura is a genus of medicinal plants native to the tropical Americas. Its bark is sometimes used in bitters.
Coleanthus subtilis (Mossgrass) (Tratt.) Seidel ex Roem. & Schult. 1817
annual plant species in the poaceae family
Coleanthus is a genus of Eurasian and North American plants in the grass family. The only known species is Coleanthus subtilis. It has a scattered distribution, found on lakeshores, streambanks, and other wet places in central Europe (France, Germany, Czech Republic; extinct in Norway and Italy), Asia (Western Siberia, Khabarovsk, eastern China), and northwestern North America (Oregon, Washington, British Columbia).
Lycium shawii (Desert-thorn) Roem. & Schult. 1819
plant species in the solanaceae family
Lycium shawii, desert thorn or Arabian boxthorn is a species of thorny shrub adapted to desert environments, and can be found throughout the Arabian Peninsula, and some places in Africa. The thin leaved, rigid bush grows up to 3 metres (9.8 feet) high, with a lot of branches and alternating spines that vary in size, and grow along the branches and on their tips. The leaves narrow towards their base. It produces small whitish-pink or purple flowers from September until April, and red pea-sized seedy berries that are edible. Habitats include gravel plains and foothills up to 4,000 ft (1,200 m),
Isolepis cernua (Slender Clubrush) (Vahl) Roem. & Schult. 1817
annual and perennial plant species in the cyperaceae family
Isolepis cernua (basionym Scirpus cernuus) is a species of flowering plant in the sedge family known by the common names low bulrush, slender club-rush, tufted clubrush, and fiberoptic grass. It is widespread, being native to many regions of the world, including parts of Australasia, Eurasia, Africa, and North and South America. I. cernua is a small sedge that can be common in boggy ground and around ponds in both freshwater wetlands and salt marshes, as well as among dune slacks and other brackish environments.
Cephalaria alpina (Alpine-scabious) (L.) Roem. & Schult. 1818
perennial plant species in the caprifoliaceae family
Cephalaria alpina, commonly known as the yellow cephalaria, alpine scabious or yellow scabious, is a species of flowering plant in the family Caprifoliaceae native to the Alps in Europe.
Brachypodium phoenicoides (Thinleaf False Brome) (L.) Roem. & Schult. 1817
perennial plant species in the poaceae family
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Alyxia stellata (Maile) (J.R.Forst. & G.Forst.) Roem. & Schult. 1819
plant species in the apocynaceae family
Alyxia stellata, known as maile in Hawaiian, is a species of flowering plant in the dogbane family, Apocynaceae, that is native to the tropical Pacific from Queensland to Hawaii. It grows as either a twining liana, scandent shrub, or small erect shrub, and is one of the few vines that are endemic to the islands. The leaves are usually ternate, sometimes opposite, and can show both types on the same stem. Flowers are quite inconspicuous and have a sweet and light fragrance of honey. The bark is most fragrant and exudes a slightly sticky, milky sap when punctured, characteristic of the family
Oplismenus undulatifolius (Wavyleaf Basketgrass) (Ard.) Roem. & Schult. 1812
annual, perennial, and medicinal plant species in the poaceae family
Oplismenus undulatifolius, commonly known as wavyleaf basketgrass, is a species of perennial grass from the family Poaceae that is native to Eurasia, specifically Southern Europe through Southern Asia. Due to its invasive nature, it can be found in countries such as Pakistan (Punjab & Kashmir), China, Japan, Korea, India, Australia, South Africa, and has since been introduced to the Mid-Atlantic United States. There are no recognized subspecies in Catalogue of Life.
Veronica wormskjoldii (American Alpine Speedwell) Roem. & Schult. 1817
perennial plant species in the plantaginaceae family
Veronica wormskjoldii is a species of flowering plant in the plantain family known by the common name American alpine speedwell. It is native to much of northern and western North America, including the western United States and northern Canada, from where it grows in moist alpine habitat, such as mountain forest understory. It has a wide subarctic distribution from Alaska to Greenland. It is named after the Danish botanist Morten de Wormskjold (1783–1845) who had studied under professor Jens Wilken Hornemann (1770–1841) and had reportedly collected 157 species of vascular plants during an
Tridens Roem. & Schult. 1817
plant genus in the poaceae family
Tridens is a genus of perennial grasses in the family Poaceae native to the Americas.
Stipa lagascae Roem. & Schult. 1817
perennial plant species in the poaceae family
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Posoqueria latifolia (Jicarita) (Rudge) Roem. & Schult. 1819
plant species in the rubiaceae family
Posoqueria latifolia, also known as Needle Flower Tree, is a species of shrub or tree in the family Rubiaceae native to the region spanning from Mexico to tropical South America. Its most remarkable feature is the floral tube of the white flower, which is only 2 or 3 mm wide, but up to 17 cm (6.7 in) long. It is pollinated by a sphinx moth.
Hypoestes triflora (Forssk.) Roem. & Schult. 1817
annual, perennial, and medicinal plant species in the acanthaceae family
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Hypoestes aristata (Ribbon Plant) (Vahl) Sol. ex Roem. & Schult. 1817
plant species in the acanthaceae family
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Dracophyllum longifolium (Inaka) (J.R.Forst. & G.Forst.) R.Br. ex Roem. & Schult. 1819
plant species in the ericaceae family
Dracophyllum longifolium, commonly called inaka (from Māori), is an upright shrub or small tree in the family Ericaceae that is endemic to New Zealand. Dracophyllum longifolium grows mostly in the South Island but is found throughout New Zealand from sea level up to 1,200 metres (3,900 ft). Inaka occurs in open forests where it can grow as high as 12 metres and in sub-alpine areas it generally reaches 1–1.5 metres (3 ft 3 in – 4 ft 11 in).
Cephalaria syriaca (Syrian Cephalaria) (L.) Roem. & Schult. 1818
annual plant species in the caprifoliaceae family
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Tournefortia gnaphalodes (White Lavendel) (L.) Roem. & Schult. 1819
plant species in the heliotropiaceae family
Tournefortia gnaphalodes, the sea lavender, bay lavender, sea rosemary, iodine bush, or beach heliotrope, is a species of flowering plant in the family Boraginaceae. It is native to Florida, Mexico, Central America, the Caribbean, Bermuda, northeastern Colombia, and Venezuela. A semi‑succulent evergreen shrub reaching 5 ft (1.5 m), it is typically found in coastal areas. Occasionally cultivated as an ornamental, it is often used for dune stabilization.
Tina (Tina (plant)) Roem. & Schult. 1819
plant genus in the sapindaceae family
Tina is a genus of tropical trees in the family Sapindaceae, native to the eastern coast of Madagascar.
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