Echinacea is a genus of herbaceous flowering plants in the daisy family. It has ten species, which are commonly called coneflowers. They are native only in eastern and central North America, where they grow in wet to dry prairies and open wooded areas. They have large, showy heads of composite flowers, blooming in summer. The generic name is derived from the Greek word ἐχῖνος, meaning "hedgehog", due to the spiny central disk. These flowering plants and their parts have different uses. Some species are cultivated in gardens for their showy flowers. Two of the species, E. tennesseensis and E. laevigata, were formerly listed in the United States as endangered species; E. tennesseensis has been delisted due to recovery and E. laevigata is now listed as threatened.
Matricaria is a genus of flowering plants in the chamomile tribe within the sunflower family. Some of the species have the common name of "mayweed", but this name also refers to plants not in this genus.
Melampodium is a genus of flowering plants in the sunflower family.
Cephalocroton is a genus of plant of the family Euphorbiaceae first described as a genus in 1841. It is native to central, eastern, and southern Africa from Nigeria and Ethiopia south to KwaZulu-Natal.
Manniophyton is a genus of lianas of the spurge family (Euphorbiaceae) described as a genus in 1864. It contains only one known species, Manniophyton fulvum, native to tropical western and central Africa from Guinea to Angola. It is dioecious.
Pentabrachion is a plant genus from the family Phyllanthaceae first described as a genus in 1864. It contains only one known species, Pentabrachion reticulatum, native to tropical Africa.
Picris hieracioides, or hawkweed oxtongue, is a species of flowering plant in the family Asteraceae.
Cameraria is a genus of plants in family Apocynaceae, first described for modern science by Linnaeus in 1753. It is native to southern Mexico, Central America, and the West Indies.
Helminthotheca echioides, known as bristlyoxtongue, is a sprawling annual or biennial herb native to Europe and North Africa. It was originally placed within the genus Picris but is often separated within the small genus Helminthotheca alongside a few other plants which also have the distinctive outer row of bracts around the flowerheads. It is a ruderal plant, found on waste ground and agricultural soils around the world, and in some places it is considered a troublesome weed.
Elephantopus is a genus of perennial plants in the daisy family (Asteraceae).
Polymnia is a genus of American plants in the sunflower family. It is the only genus in the tribe Polymnieae. Several species are known by the common name leafcup.
Carex hirta, the hairy sedge or hammer sedge, is a species of sedge native across Europe. It has characteristic hairy leaves and inflorescences, and is the type species of the genus Carex.
Chondrilla is a genus of flowering plants in the family Asteraceae. They are native to Eurasia, and certain taxa are known as introduced species outside their native range. The best known of these is rush skeletonweed, a noxious weed established in Africa, Australia, and the Americas.
Pausandra is a plant genus of the family Euphorbiaceae first described in 1870. It is native to Central America and South America.
- Pausandra fordiiSecco - Amapá, French Guiana
- Pausandra hirsutaLanj. - Peru, Brazil, Bolivia (Pando), Colombia (Amazonas)
- Pausandra macropetalaDucke - Brazil, Peru (Loreto), Venezuela (Amazonas)
- Pausandra macrostachyaDucke - Pará
- Pausandra martiniBaill. - French Guiana, Suriname, Guyana, Colombia, Venezuela, Peru, Brazil
- Pausandra megalophyllaMüll.Arg. - Rio de Janeiro
- Pausandra morisiana(Casar.) Radlk. - Brazil
- Pausandra trianae(Müll.Arg.) Baill. - widespread from Honduras to Bolivia
Argyranthemum foeniculaceum, called the Canary Island marguerite, is native to the Canary Islands,. It is widely cultivated as an ornamental and naturalized in California and Australia.
Fritillaria dagana is a rare bulbous herbaceous perennial plant native to Siberia, Russia. It is a species in the genus Fritillaria of the family Liliaceae. It is placed in the subgenus Liliorhiza.
Phyllobotryon is a genus of flowering plants belonging to the family Salicaceae native to the region spanning from Nigeria to Tanzania and Angola.
Phyllobotryon spathulatum is a species of tree in the family Salicaceae native to Cameroon, Gabon, and Nigeria.
Gerbera ambigua is a species of flowering plant in the section Lasiopus of genus Gerbera belonging to the basal Mutisieae tribe within the large Asteraceae family.
The Linnaean Herbarium is a historically significant collection of over 13,000 dried plant and lichen specimens assembled by the Swedish taxonomist Carl Linnaeus (1707–1778). Housed at the Linnean Society of London since 1828, it forms the foundation of modern botanical nomenclature and serves as the primary reference for Linnaeus's 1753 work Species Plantarum, the starting point for modern plant taxonomy. The herbarium includes specimens from Linnaeus's botanical explorations and global collaborations, spanning early Swedish collections to acquisitions from the Americas, Asia, and Africa.
