Urtica is a genus of flowering plants in the family Urticaceae. Many species have stinging hairs and may be called nettles or stinging nettles, although the latter name applies particularly to Urtica dioica.
Abutilon is a large genus of flowering plants in the mallow family, Malvaceae. It is distributed throughout the tropics and subtropics of the Americas, Africa, Asia, and Australia. General common names include Indian mallow and velvetleaf; ornamental varieties may be known as room maple, parlor maple, or flowering maple. The genus name is an 18th-century Neo-Latin word that came from the Arabic ’abū-ṭīlūn, the name given by Avicenna to this or a similar genus.
The Rhamnaceae are a large family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. Rhamnaceae is included in the order Rosales.
Gentianaceae is a family of flowering plants of 103 genera and about 1600 species.
Cissus is a genus of approximately 350 species of lianas in the grape family (Vitaceae). They have a cosmopolitan distribution, though the majority are to be found in the tropics.
Boehmeria is a genus of 47 species of flowering plants in the nettle family Urticaceae. Of the species, 33 are indigenous to the Old World and 14 to the New World; no species is indigenous to both the Old and New Worlds. The species include herbaceous perennials, shrubs and small trees. Although related to the similar-looking species of the stinging nettles of genus Urtica, species of Boehmeria do not have stinging hairs. Because of the similarity in appearance, some species are commonly called "false nettles".
Acaena is a genus of about 60 species of mainly evergreen, creeping herbaceous perennial plants and subshrubs in the family Rosaceae, native mainly to the Southern Hemisphere, notably New Zealand, Australia and South America, but with a few species extending into the Northern Hemisphere, north to Hawaii and California.
Mentzelia is a genus of about 60-70 species of flowering plants in the family Loasaceae, native to the Americas. The genus comprises annual, biennial, and perennial herbaceous plants and a few shrubs.
Loasaceae is a family of 15–20 genera and about 200–260 species of flowering plants in the order Cornales, native to the Americas and Africa. Members of the family include annual, biennial and perennial herbaceous plants, and a few shrubs and small trees. Members of the subfamily Loasoideae are known to exhibit rapid thigmonastic stamen movement when pollinators are present.
Sanicula is a genus of plants in family Apiaceae, the same family to which the carrot and parsnip belong. This genus has about 45 species worldwide, with at least 22 in North America. The common names usually include the terms sanicle or black snakeroot.
Mutisia is a genus of flowering plant in the tribe Mutisieae within the family Asteraceae. Mutisia has been named after José Celestino Mutis. It comprises about sixty species which can be found along the entire length of the Andes and in southern Brazil, Paraguay, Uruguay and northern Argentina.
Nassauvia is a genus of flowering plants in the tribe Nassauvieae within the family Asteraceae. It is native to Argentina, Bolivia, Chile and the Falkland Islands.
A stinging plant or a plant with stinging hairs is a plant with hairs (trichomes) on its leaves or stems that are capable of injecting substances that cause pain or irritation.
Leucheria is a genus of flowering plants in the family Asteraceae.
Tetraglochin is a genus of flowering plants belonging to the family Rosaceae.
Blumenbachia is a genus of flowering plants belonging to the family Loasaceae.
Caiophora is a genus of flowering plants belonging to the family Loasaceae.
Grausa is a genus of plants in the Loasaceae found in Chile and Argentina. It was previously included in the genus Loasa and was split to resolve a paraphyletic grouping of genera in the Loasaceae. The seeds of this genus have a characteristic hilar cone.
