Adrian Hardy Haworth

Epiphyllum, ; from Ancient Greek ἐπι- (epi-), meaning "upon", and φύλλον (phúllon), meaning "leaf", is a genus of epiphytic plants in the cactus family (Cactaceae), native to Central America and South America. Common names for these species include climbing cacti, orchid cacti and leaf cacti, though the latter also refers to the genus Pereskia.

Epiphyllum oxypetalum, the Dutchman's pipe cactus, princess of the night or queen of the night, is a species of cactus with a native range from Mexico to Nicaragua. It blooms nocturnally, and its flowers wilt before dawn. Though it is sometimes referred to as a night-blooming cereus, it is not closely related to any of the species in the tribe Cereeae that are more commonly known by that name. All Cereus species bloom at night and are terrestrial plants; Epiphyllum species are usually epiphytic.

Mammillaria is one of the largest genera in the cactus family (Cactaceae), with currently about 170 to 190 accepted species and around 99 subspecies. Most of the mammillarias are native to Mexico, while some come from the Southwestern United States, the Caribbean, Colombia, Guatemala, Honduras and Venezuela. The common name "pincushion cactus" refers to this genus and the closely related Escobaria. The first species was described by Carl Linnaeus as Cactus mammillaris in 1753, deriving its name from the Latin mammilla, "nipple", referring to the tubercles that are among the distinctive

Xerochrysum bracteatum, commonly known as the golden everlasting or strawflower, is a flowering plant in the family Asteraceae native to Australia. Described by Étienne Pierre Ventenat in 1803, it was known as Helichrysum bracteatum for many years before being transferred to a new genus Xerochrysum in 1990. It is an annual up to 1 m (3.3 ft) tall with green or grey leafy foliage. Golden yellow or white flower heads are produced from spring to autumn; their distinctive feature is the papery bracts that resemble petals. The species is widespread, growing in a variety of habitats across the

Monanthes is a genus of small, succulent, subtropical plants of the family Crassulaceae. Most species in the genus are endemic to the Canary Islands, with one species also endemic to the Savage Islands and another to the High Atlas mountains of Morocco. Its center of diversity is Tenerife, with seven species occurring on this island. On Fuerteventura and Lanzarote, only M. laxiflora occurs. Monanthes is a rare example where a species re-colonizes the continent from an island, after their ancestors have colonized the island from the continent. Monanthes are not frost-resistant. They are linked

Orbea is a genus of flowering plants of the family Apocynaceae, first described as a genus in 1812. It is native to Africa and the Arabian Peninsula. Species Species accepted by the Plants of the World Online as of February 2023:

Opuntia stricta is a species of large cactus that is native to subtropical and tropical coastal areas of the Americas, especially around the Caribbean and the lower East Coast of the United States. Common names include erect prickly pear and nopal estricto (Spanish). The first description as Cactus strictus was published in 1803 by Adrian Hardy Haworth. In 1812 he moved the species to the genus Opuntia.

Glottiphyllum is a genus of about 57 species of succulent subtropical plants of the family Aizoaceae. It is closely related to the Gibbaeum and Faucaria genera. The name comes from ancient Greek γλωττίς glottis "tongue" and φύλλον phyllon "leaf". The species are native to South Africa, specifically to Cape Province and the Karoo desert. They grow in rocks and soils incorporating slate, sandstone and quartz. Rainfall in their native areas is between 125 and 500 mm (4.9 and 19.7 in), most of which falls in March and November.

Pereskia grandifolia (rose cactus; syn. Rhodocactus grandifolius) is a species of cactus native to eastern and southern Brazil. Like all species in the genus Pereskia and unlike most cacti, it has persistent leaves. It was first described in 1819. It is grown as an ornamental plant and has naturalized outside its native range.

Aloe striata, with the common name coral aloe, is a small, stemless South African Aloe species.

Orbea variegata, also known as the star flower, carrion flower, starfish cactus and toad cactus, is a species of flowering plant in the family Apocynaceae that is native to the coastal belt of the Western Cape, South Africa, growing actively during the winter rainfall season. It is an invasive species in southern Australia.

Opuntia fragilis, known by the common names brittle pricklypear and little prickly pear, is a prickly pear cactus native to much of western North America.

Euphorbia lactea is a species of spurge native to arid and subtropical regions of South Asia, mainly the Indian Subcontinent. Common names include mottled spurge, frilled fan, elkhorn, candelabra spurge, candelabrum tree, candelabra cactus, candelabra plant, dragon bones, false cactus, hatrack cactus, milkstripe euphorbia, mottled candlestick.

Opuntia monacantha, commonly known as drooping prickly pear, cochineal prickly pear, or Barbary fig, is a species of plant in the family Cactaceae native to South America.

Micranthes is a genus of flowering plants in the saxifrage family. It was formerly included within the genus Saxifraga until DNA evidence from 1996 showed the members of what is now Micranthes are more closely related to Boykinia and Heuchera than to other members of the genus Saxifraga. All members of this genus are herbaceous, with prominent basal leaves. They are found in temperate, arctic, and alpine regions of North America and Eurasia.

Hymenogyne is a genus of flowering plants belonging to the family Aizoaceae. It is endemic to the Cape Provinces of South Africa. Two species are accepted. Hymenogyne conica L.Bolus Hymenogyne glabra (Aiton) Haw.

Furcraea foetida (Giant Cabuya, Green-aloe or Mauritius-hemp) is a species of flowering plant native to the Caribbean and northern South America. It is widely cultivated and reportedly naturalized in many places (India, parts of Africa, Portugal, Australia, Thailand, Florida, New Zealand, and many oceanic islands).

Opuntia polyacantha is a common species of cactus known by the common names plains pricklypear, starvation pricklypear, hairspine cactus, and panhandle pricklypear.

Mammillaria geminispina, the twin spined cactus, is a species of flowering plant in the family Cactaceae, native to central Mexico.

Lobaria is a genus of foliose lichens, formerly classified in the family Lobariaceae, but now placed in the Peltigeraceae. They are commonly known as "lung wort" or "lungmoss" as their physical shape somewhat resembles a lung, and their ecological niche is similar to that of moss. Lobaria are unusual in that they have a three-part symbiosis, containing a fungus, and an alga (as other lichens do), but also a cyanobacterium that fixes nitrogen.

Aloe pluridens (also known as the French Aloe) is an arborescent aloe indigenous to southern Africa.

Aloe macra (previously Lomatophyllum macrum. The "Réunion Aloe", locally known as the "Mazambron marron" or "Mazambron sauvage") is a species of Aloe endemic to the island of Réunion, in the Indian Ocean.

Agave angustifolia (Caribbean agave) is a species of agave plant which is native to Mexico and Central America. It is used to make mezcal and also as an ornamental plant. The cultivar 'Marginata' that white margins on the leaves is a popular variety cultivated in botanical gardens and backyards. It is very closely related to blue agave Agave tequilana, but is used to make the distilled alcoholic beverage mezcal instead of tequila, and is the predominant agave species grown in the Mexican state of Oaxaca.

Yucca flaccida, commonly called Adam's needle or weak-leaf yucca, is a species of flowering plant in the asparagus family (Asparagaceae). It is native to south-central and southeastern North America, from the lower Great Plains eastward to the Atlantic seaboard in Virginia, south through Florida and the Gulf states. Its natural habitat is in sandy open woodlands and fields. It is not considered to be threatened by the IUCN.

Mammillaria prolifera, commonly known as the Texas nipple-cactus, West Indian nipple-cactus, grape cactus, or hair-covered cactus, is a species of cactus native to North America. Three subspecies are currently recognized: M. prolifera subsp. prolifera (Cuba, Dominican Republic, and Haiti), M. prolifera subsp. arachnoidea (Mexico), and M. prolifera subsp. texana (Mexico and the United States). The subspecies differ in overall size, the number and color of the spines, and the shape and color of the flowers. The plant's round or slightly elongated stems usually form small, dense clusters, and

Mammillaria magnimamma, common name Mexican pincushion, is a species of flowering plant in the cactus family Cactaceae.

Kleinia neriifolia, known in Spanish as verode or berode, is a species of flowering plant in the daisy family (Asteraceae). It is endemic to the Canary Islands. It was formerly named Senecio kleinia.

Haworthia mirabilis is a species of the genus Haworthia belonging to the family Asphodelaceae.

Epiphyllum phyllanthus, commonly known as the climbing cactus, is a species of epiphytic cacti. It has no leaves, instead having stems that photosynthesise. It is thought to be pollinated by hawkmoths, as the flowers only open at night and produce a strong fragrance. It is the most common epiphyte on the tree, Platypodium elegans, particularly growing in cavities in the trunk.

Duvalia is a succulent plant genus in the subfamily Asclepiadoideae, in the family Apocynaceae (dogbane). The genus was first described in 1812, named after the French physician and botanist Henri-Auguste Duval (1777-1814).