Plants named in 1981

Bituminaria bituminosa, the Arabian pea or pitch trefoil, is a perennial Mediterranean herb species in the genus Bituminaria. The pterocarpans bitucarpin A and B can be isolated from the aerial parts of B. bituminosa. It has several potential uses: (i) forage crop, (ii) Phytostabilization of heavy metal contaminated or degraded soils, (iii) Synthesis of furanocoumarins (psoralen, angelicin, xanthotoxin and bergapten), compounds of broad pharmaceutical interest. It is easily recognizable by the characteristic smell of bitumen from its leaves. This strong tar-like characteristic aroma appears

Tetradium daniellii, the bee-bee tree or Korean evodia, is a species of flowering plant in the family Rutaceae. It is native to Korea and southwestern China. Tetradium daniellii var. hupehensis was formerly classed as Euodia hupehensis

Pseudognaphalium luteoalbum, synonyms including Helichrysum luteoalbum, is a species of flowering plant in the family Asteraceae. In the United Kingdom, it is known as the Jersey cudweed.

Acidosasa is a genus of East Asian bamboo in the grass family. Acidosasa is found primarily in Southern China, with 1 species in Vietnam. Its name is formed from Latin acidum ("sour") and Sasa (another bamboo genus), referring to its edible shoots. Young shoots of the plants are preserved by the local population. Species formerly included see Indosasa Oligostachyum Pleioblastus Pseudosasa

Cyanidiophyceae is a class of unicellular red algae within subdivision Cyanidiophytina, and contain a single plastid, one to three mitochondria, a nucleus, a vacuole, and floridean starch. Pyrenoids are absent. Most are extremophiles inhabiting acid hot springs with a pH between 0,2 and 4 and temperatures up to 56 °C. They originated in extreme environments with high temperatures and low pH, which allowed them to occupy ecological niches without any competition. While still found in extreme environments, they have also adapted to live along streams, in fissures in rock walls and in soil, but

Quercus phillyreoides is a species of flowering plant in the genus Quercus, placed in subgenus Cerris and section Ilex. It is evergreen, withstands frost and can be grown in hardiness zone 7. It is native to southern China, the Ryukyu Islands, and Japan, and has been introduced to Korea.

Aframomum corrorima is a species of flowering plant in the ginger family, Zingiberaceae. It is an herbaceous perennial that produces leafy stems 1–2 meters tall from rhizomatous roots. The alternately-arranged leaves are dark green, 10–30 cm long and 2.5–6 cm across, elliptical to oblong in shape. Pink flowers are borne near the ground and give way to red, fleshy fruits containing shiny brown seeds, which are typically 3–5 mm in diameter. The spice, known as Ethiopian cardamom, false cardamom, or korarima, is obtained from the plant's seeds (usually dried), and is extensively used in

Quercus cornelius-mulleri is a North American species of oak known by the common name Muller oak, or Muller's oak. It was described to science in 1981 when it was segregated from the Quercus dumosa complex and found to warrant species status of its own. It was named after ecologist Cornelius Herman Muller. It is native to southern California and Baja California, where it grows in chaparral, oak woodlands, and other habitat in foothills and mountains. It can most easily be observed in Joshua Tree National Park and in the woodlands along the western margins of the Colorado Desert in San Diego

Cycas panzhihuaensis is a rare and vulnerable species of cycad known in the wild only from Sichuan and Yunnan provinces in China. It can be seen at the South China Botanical Garden in Guangzhou and is also cultivated for horticulture, where it is often known as the Dukou sago palm.

Banksia grossa is a species of shrub in the family Proteaceae and is endemic to Southwest Australia. It is one of fourteen species of banksia of the series Abietinae, all of which bear predominantly cylindrical or oval inflorescences. Collected in 1965, it was first formally described in 1981 by Alex George. Its thick leaves and large seeds distinguish it from other members of the Abietinae, and are the basis of its species name. Found in sand or sand over laterite among heath between Eneabba and Badgingarra in Western Australia, the species grows as a many-stemmed shrub to 1 m (3.3 ft) high

Banksia cuneata, commonly known as matchstick banksia or Quairading banksia, is an endangered species of flowering plant in the family Proteaceae. Endemic to southwest Western Australia, it belongs to Banksia subg. Isostylis, a sub-genus of three closely related Banksia species with inflorescences or flower clusters that are dome-shaped heads rather than characteristic Banksia flower spikes. A shrub or small tree up to 5 m (16 ft) high, it has prickly foliage and pink and cream flowers. The common name Matchstick Banksia arises from the blooms in late bud, the individual buds of which

Banksia aculeata, commonly known as prickly banksia, is a species of plant of the family Proteaceae native to the Stirling Range in the southwest of Western Australia. A shrub up to 2 m (7 ft) tall, it has dense foliage and leaves with very prickly serrated margins. Its unusual pinkish, pendent (hanging) flower spikes, known as inflorescences, are generally hidden in the foliage and appear during the early summer. Although it was collected by the naturalist James Drummond in the 1840s, Banksia aculeata was not formally described until 1981, by Alex George in his monograph of the genus. A rare

Ampelocalamus is a genus of Asian bamboo in the grass family. It is found mostly in Southern China, with some species in the eastern Himalayas and northern Indochina. Species

Banksia telmatiaea, commonly known as swamp fox banksia or rarely marsh banksia, is a shrub that grows in marshes and swamps along the lower west coast of Australia. It grows as an upright bush up to 2 metres (6 feet 7 inches) tall, with narrow leaves and a pale brown flower spike, which can produce profuse quantities of nectar. First collected in the 1840s, it was not published as a separate species until 1981; as with several other similar species it was previously included in B. sphaerocarpa (fox banksia). The shrub grows amongst scrubland in seasonally wet lowland areas of the coastal

Mestoklema is a genus of flowering plants belonging to the family Aizoaceae. It is native to Namibia and to the Cape Provinces and Free State of South Africa.

Grammosolen is a genus of flowering plants belonging to the family Solanaceae. Its native range is South Australia. Species: Grammosolen dixonii (F.Muell. & Tate) Haegi Grammosolen truncatus (Ising) Haegi

Banksia saxicola, the rock banksia or Grampians banksia, is a species of tree or shrub in the family Proteaceae. It occurs in Victoria in two distinct populations, one in The Grampians and the other on Wilsons Promontory. Formerly considered to be a form of B. integrifolia, it was described as a distinct species by Alex George in 1981. It is most closely related to Banksia marginata. Near the coast, B. saxicola grows as a tree to 13 m (43 ft) high, while in alpine areas it is a shrub that grows up to 5 m (16 ft) high, or 2 m (6.6 ft) in exposed areas. It has leathery green leaves and

Banksia plagiocarpa, commonly known as Dallachy's blue banksia, blue banksia or Hichinbrook banksia, is a species of shrub or tree in the plant genus Banksia. It occurs only on Hinchinbrook Island, Queensland, and the immediately adjacent mainland. First collected in 1867, Banksia plagiocarpa was not described until 1981, when Alex George named it in his monograph of the genus Banksia. Genetic studies show it to be related to Banksia aquilonia, Banksia oblongifolia and Banksia robur.

Banksia conferta, commonly known as the glasshouse banksia, is a species of shrub that is endemic to eastern Australia. It has rough bark on the trunk, elliptic to egg-shaped leaves arranged in whorls, and crowded yellow flowers in a cylindrical spike later forming a relatively large number of follicles.

Austrocylindropuntia floccosa, also called waraqu (Aymara and Quechua for cactus, Hispanicized spelling Huaraco) is found in the high plains of Northern Peru and Bolivia.

Allium calamarophilon is a species of plant in the genus Allium. It is endemic to Greece, known only from one small population on the Island of Euboea, on a rocky ledge in the center of the island near the town of Kimi. Its natural habitats are Mediterranean-type shrubby vegetation and rocky shores. It is threatened by habitat loss. Allium calamarophilon is a very small plant with a short, slender scape barely 12 cm tall. Leaves are lanceolate. Umbel contains 5-8 white or pink flowers with dark midstripes along each of the tepals.

Xenostegia tridentata, commonly known as the Narrowleaf morning glory, is a perennial creeper belonging to the family Convolvulaceae. It is widely distributed across tropical and subtropical regions of Africa, Asia, and Australia, and has also naturalized in parts of the Americas. The plant is characterized by its narrow, arrow-shaped leaves with toothed bases and small funnel-shaped yellow to white flowers. It typically grows in sandy soils, coastal areas, wastelands, and cultivated fields, flowering throughout the year.

Trochodendraceae is the only family of flowering plants in the order Trochodendrales. It comprises two extant genera, each with a single species along with up to five additional extinct genera and a number of extinct species. The living species are native to south east Asia. The two living species (Tetracentron sinense and Trochodendron aralioides) both have secondary xylem without vessel elements, which is quite rare in angiosperms. As the vessel-free wood suggests primitiveness, these two species have attracted much taxonomic attention.

Adoxa corydalifolia is a species of flowering plant in the family Adoxaceae. It is a perennial endemic to the Hengduan Mountains of the Tibetan Plateau in southern Qinghai Province of China, where it grows in subalpine habitats. It is a perennial herb growing from a fibrous root system with rhizomes. It produces one to four upright, green stems up to 25 centimeters tall and just a few millimeters wide. The basal leaves are pinnate, made up of leaflets which may be lobed or subdivided. There is usually one opposite pair of leaves higher on the stem, each with three leaflets. The inflorescence

Rottboellia cochinchinensis is a species of flowering plant in the family Poaceae. This grass is known by the common names Itchgrass, Raoul grass, corngrass, Kokoma grass, Guinea-fowl grass, jointed grass, Shamwa grass and Kelly grass. It is a tall, tufted annual grass whose stems (culms) grow up to 3 metres (9 ft 10 in) in height with leaf-blades of up to 45 centimetres (1 ft 6 in) in length. The species flowers at the apex of culms in the form of spike-like racemes composed of paired spikelets. The common name Itchgrass comes from the bristly (hispid) leaf-sheath which can be irritating to

Otholobium is a genus of flowering plants in the pea family with over 50 named species, but several also remain undescribed so far. Species may be herbaceous perennials, subshrubs, shrubs or small trees. The alternately set leaves are accompanied by stipules and mostly consist of three leaflets, sometimes just one. The inflorescences are on short or long stalks in the axils of the leaves. Within the inflorescences, the pea-like flowers occur in groups of three, rarely of two, subtended by a bract, and each individual flower also is subtended by a narrow bract. The petals may be white, pink,

Lasiocereus is a genus of flowering plants in the family Cactaceae, native to Peru. The genus was established by Friedrich Ritter in 1966. It was formerly placed in subtribe Rebutiinae, but a 2023 molecular phylogenetic study suggested that it probably belonged to the subtribe Trichocereinae.

Halothamnus glaucus is a species of the plant genus Halothamnus, that belongs to the subfamily Salsoloideae of the family Amaranthaceae, (formerly Chenopodiaceae). It occurs in Western and Central Asia.

Furtadoa is a genus of flowering plants in the family Araceae. It consists of only two species: Furtadoa mixta and Furtadoa sumatrensis.

Cypripedium kentuckiense, the Kentucky lady's slipper or southern lady's slipper, is a member of the orchid genus Cypripedium. Members of this genus are commonly referred to as lady's slipper orchids. Originally thought to be an aberrant form of Cypripedium parviflorum var. pubescens, the morphology of C. kentuckiense suggests it is a species of its own. However, molecular evidence suggests that C. kentuckiense is more closely related to Cypripedium parviflorum var. parviflorum than it is to Cypripedium parviflorum var. pubescens.