Plants named in 1922

Lithops is a genus of succulent plants in the ice plant family, Aizoaceae. Members of the genus are native to southern Africa. They avoid being eaten by herbivores with their camouflage as small stones, and are often known as pebble plants or living stones. "Lithops" is both the genus name and the common name, and is singular as well as plural. The name is derived from the Ancient Greek words λίθος (líthos) 'stone' and ὄψ (óps) 'face', referring to the stone-like appearance of the plants.

The Anisophylleaceae are a small family with four genera and about 70 species, in the order Cucurbitales, according to the APG II. However, it is more isolated from the other suprafamilial clades in this order, while it shows some similarities in flower morphology with the genus Ceratopetalum (family Cunoniaceae, order Oxalidales). Several wood features of this family are more primitive than those of the other families in the order Cucurbitales. Previously, this family was categorized under its own order, Anisophylleales, by Takhtajan in 1997. It is a pantropical family of shrubs and

Ferocactus is a genus of large barrel-shaped cacti, mostly with large spines and small flowers. There are about 30 species included in the genus. They are found in the southwestern United States and northwestern Mexico.

Copiapoa is a genus of flowering plants in the cactus family Cactaceae, from the dry coastal deserts, particularly the Atacama Desert, of northern Chile.

Conophytum is a genus of succulent plants that belong to the family Aizoaceae. They are native to southern Namibia and the western and southern Cape Provinces of South Africa. The name is derived from the Latin conus (cone) and Greek phytum (plant). The plants are also known as knopies (buttons in Afrikaans), waterblasies (water blisters in Afrikaans), sphaeroids, conos, cone plants, dumplings, or button plants.

Carex otrubae, the false fox-sedge, is a species of flowering plant in the sedge family, Cyperaceae.

Parthenocissus inserta (syn. Parthenocissus vitacea), also known as thicket creeper, false Virginia creeper, woodbine, or grape woodbine, is a woody vine native to North America. Contact with it may cause dermatitis.

Frailea is a genus of globular to short cylindrical cacti native to South America.

Reynoutria sachalinensis, the giant knotweed or Sakhalin knotweed, (syns. Polygonum sachalinense, Fallopia sachalinensis) is a species of Fallopia native to northeastern Asia in northern Japan (Hokkaidō, Honshū) and the far east of Russia (Sakhalin and the southern Kurile Islands). Reynoutria sachalinensis is a herbaceous perennial plant growing to 2–4 m (79–157 in) tall, with strong, extensively spreading rhizomes forming large clonal colonies. The leaves are some of the largest in the family, up to 15–40 cm (6–15.5 in) long and 10–28 cm (4–11 in) broad, nearly heart-shaped, with a somewhat

Astrophytum ornatum, the bishop's cap or monk's hood cactus, is a flowering plant of the family Cactaceae, endemic to the Central Plateau of Mexico. It is the largest and tallest species of Astrophytum.

Astrophytum capricorne, the goat's horn cactus, is a species of flowering plant in the cactus family Cactaceae, that is native to the Coahuila regions of Northern Mexico. Growing to 50 centimetres (20 in) tall by 10 centimetres (3.9 in) wide in a ball or oval shape, it is grey-green in colour with 7 to 9 prominent ribs, very long twisted spines and yellow flowers with a red centre in summer. The common name of goat's horn cactus corresponds to the species identifier capricorne (capri meaning "goat" and corne meaning "horn") referring to the curved spines that are said to resemble a goat's

Thelocactus is a genus of flowering plants in the cactus family Cactaceae. Members of the genus are native to the arid lands of Central and Northern Mexico.

Gymnocalycium mihanovichii is a species of cactus from South America. The most popular cultivars are varied mutants which completely lack chlorophyll, exposing the red, orange, or yellow pigmentation. These mutant strains are often grafted onto the hylocereus cactus, and the combined plant is called a "Moon Cactus". Moon cacti are commonly grown as houseplants and are also known as Ruby Ball, Red Cap, Red Hibotan, or Hibotan cacti.

Austrotaxus spicata, the New Caledonia yew or southern yew, is a species of yew, the sole species in the genus Austrotaxus. It is related to the other yews in the genera Taxus and Pseudotaxus. It is endemic to New Caledonia, occurring in the central and northern parts of the island at 300-1,350 m altitude. It is a dioecious coniferous shrub or small tree, reaching 5–20 m (rarely 25 m) tall with reddish bark. The leaves are lanceolate, flat, 8–12 cm long (up to 17 cm on young plants) and 4 mm broad, dark green above, with two paler green stomatal bands below; they are arranged spirally on the

Epithelantha (button cactus) is a genus of cactus that is native to north-eastern Mexico, and the south-western United States from western Texas to Arizona. There are eight species recognised in the genus Epithelantha. The name Epithelantha refers to the flower position near the apex of the tubercles.

Commiphora gileadensis, the Arabian balsam tree, is a shrub species in the family Burseraceae growing in Saudi Arabia, Yemen, southern Oman, Sudan and in southeast Egypt where it may have been introduced. Other common names for the plant include balm of Gilead and Mecca myrrh, but this is due to historical confusion between several plants and the historically important expensive perfumes and drugs obtained from them. True balm of Gilead was very rare, and appears to have been produced from the unrelated tree Pistacia lentiscus. The Commiphora gileadensis species also used to include

Matucana is a genus of cacti (family Cactaceae), containing approximately 20 species of mostly globular plants. The genus is known only from Peru, mostly along the Marañón River. Some species are endangered due to collection for the specialist market.

Mila caespitosa is a species of cacti (family Cactaceae) and the only species of the genus Mila. Its generic name is an anagram of Lima, Peru, the city near which the plant is found. The genus was first thought to comprise 13 species, until recent studies suggest they form one very variable species.

Matucana is a genus of cacti (family Cactaceae), containing approximately 20 species of mostly globular plants. The genus is known only from Peru, mostly along the Marañón River. Some species are endangered due to collection for the specialist market.

Austrocactus is a genus of cacti with ten species endemic of southern South America, in Argentina and Chile. They have solitary or branched bodies, the ribs are usually divided into tubercules (except Austrocactus spiniflorus). The tallest species in this genus is 80 centimeters. Flowers are pink, orange, red or yellow with a characteristic spiny tube.

Argyroderma is a genus consisting of a dozen species of succulents in the iceplant family from South Africa.

Sclerocactus ("hard cactus", from Greek; refers to the hard, dry fruit) is a genus of cacti. It comprises about 15 species, the exact number depending on the authority. These species are xerophytic. They are sometimes called 'fishhook cactus' or 'little barrels.'

Neolloydia is a genus of cacti.

Arctotheca calendula is a plant in the sunflower family commonly known as capeweed, plain treasureflower, cape dandelion, or cape marigold because it occurs in the Western Cape Province in South Africa. It has a wide distribution in coastal areas of South Africa, extending from Namaqualand to Cape Point and as far as KwaZulu-Natal.

Quercus intricata, common name dwarf oak, intricate oak or Coahuila scrub oak, is a plant species native to northern Mexico and western Texas.

Ferocactus glaucescens, the glaucous barrel cactus, is a species of flowering plant in the family Cactaceae, native endemic to México.

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Byblis ( BIB-liss) is a genus of carnivorous plants, sometimes termed the rainbow plants for the attractive appearance of their mucilage-covered leaves in bright sunshine. Native to Australia and New Guinea, it is the only genus in the family Byblidaceae. The first species in the genus was described by the English botanist Richard Anthony Salisbury in 1808. Eight species are now recognised. Byblis species look very similar to Drosera and Drosophyllum, but are distinguished by their zygomorphic flowers, with five curved stamens off to one side of the pistil. These genera are in fact not

Ferocactus echidne is a barrel cactus in the genus Ferocactus. It is found in nature in Mexico. This cactus is known commonly as Sonora barrel, Coville's barrel cactus, Emory's barrel cactus, and traveler's friend. This plant is often sold as a houseplant.

Epithelantha micromeris is a button cactus in the genus Epithelantha, found in Arizona, New Mexico, Texas and northeast Mexico. It is characterized by its white-grey spines growing on a globular shaped stem. The density of its white spines give it the illusion of being completely grey, making it very difficult to see the green color beneath. It grows to be 1–5 cm tall, and roughly 2–4 cm in diameter. E. micromeris produces small, pink-white flowers, often considered to be some of the smallest of the cacti. These flowers give way to a bright red, cylindrical fruit which contains several black