George Arnott Walker Arnott

Vachellia farnesiana, also known as Acacia farnesiana, and previously Mimosa farnesiana, commonly known as sweet acacia, huisache, casha tree, or needle bush, is a species of shrub or small tree in the legume family, Fabaceae. Its flowers are used in the perfume industry.

The Surianaceae are a family of plants in the order Fabales with five genera and eight known species. It has an unusual distribution: the genus Recchia is native to Mexico, and the sole member of Suriana, S. maritima, is a coastal plant with a pantropical distribution; and the remaining three genera are endemic to Australia. They range in form from small shrubs to tall trees.

The rose subfamily Rosoideae consists of more than 850 species, including many shrubs, perennial herbs, and fruit plants such as strawberries and brambles. Only a few are annual herbs. The circumscription of the Rosoideae is still not wholly certain; recent genetic research has resulted in several changes at the genus level and the removal from Rosoideae of some genera (notably Cercocarpus, Cowania, Dryas and Purshia) previously included in the subfamily.

Terminalia arjuna is a tree of the genus Terminalia. It is commonly known as arjuna or arjun tree in English. It is used as a traditional medicinal plant.

Vachellia is a genus of flowering plants in the legume family, Fabaceae, commonly known as thorn trees or acacias. It belongs to the subfamily Mimosoideae. Its species were considered members of genus Acacia until 2009. Vachellia can be distinguished from other acacias by its capitate inflorescences and spinescent stipules. Before discovery of the New World, Europeans in the Mediterranean region were familiar with several species of Vachellia, which they knew as sources of medicine, and had names for them that they inherited from the Greeks and Romans. The wide-ranging genus occurs in a

Amygdaloideae is a subfamily within the flowering plant family Rosaceae. It was formerly considered by some authors to be separate from Rosaceae, and the family names Prunaceae and Amygdalaceae have been used. Reanalysis from 2007 has shown that the previous definition of subfamily Spiraeoideae was paraphyletic. To solve this problem, a larger subfamily was defined that includes the former Amygdaloideae, Spiraeoideae, and Maloideae. This subfamily, however, is to be called Amygdaloideae rather than Spiraeoideae under the International Code of Nomenclature for algae, fungi, and plants as

Torreya is a genus of conifers comprising six or seven species placed in the family Taxaceae, though sometimes formerly placed in Cephalotaxaceae. Four species are native to eastern Asia; the other two are native to North America. They are small to medium-sized evergreen trees reaching 5–20 m, rarely 25 m, tall. Common names include nutmeg yew. The genus is one example of the Arcto-Tertiary Geoflora in paleoecology. The pattern of highly disjunct distribution of geographic ranges of the species within such a genus spans temperate plant zones of continents in the Northern Hemisphere. This

Dichrostachys cinerea, known as sicklebush, bell mimosa, Chinese lantern tree or Kalahari Christmas tree (South Africa), is a legume of the genus Dichrostachys in the family Fabaceae. Other common names include omubambanjobe (Tooro Uganda), acacia Saint Domingue (French), el marabú (Cuba), " Mpangara" (Shona), Kalahari-Weihnachtsbaum (German of former South West Africa), kéké or mimosa clochette (Réunion), burli (Fula), sinté (Soninke).

Antigonon leptopus is a species of perennial vine in the buckwheat family commonly known as coral vine or queen's wreath. This clambering vine is characterized by showy, usually pink flowers that can bloom throughout the year and large, heart-shaped leaves. A. leptopus is native to the Pacific and Atlantic coastal plains of Mexico, but also occurs as a roadside weed from Mexico south to Central America. It is widely introduced and invasive throughout tropical regions of the world, including in the south and eastern United States, the West Indies, South America, and the Old World tropics of

Grimmiaceae is a family of mosses in the order Grimmiales.

Scalesia is a genus in the family Asteraceae endemic to the Galapagos Islands. It contains fifteen species that grow as shrubs or trees. This is unusual, because tree species are uncommon in Asteraceae. The genus Scalesia resulted from a blunder by Arnott who named it in honour of "W. Scales Esq., Cawdor Castle, Elginshire" but discovered after publication that the name should have read 'Stables', after Scottish botanist, William Alexander Stables (1810–1890). All of the species have soft, pithy wood. Scalesia species have been called "the Darwin's finches of the plant world" because they

Millettia is a genus of flowering plants in the family Fabaceae. It consists of about 169 species of shrubs, lianas or trees, which are native to tropical and subtropical regions of sub-Saharan Africa, the Indian subcontinent, Indochina, southern China, Malesia, and New Guinea. Typical habitats include tropical rain forest and seasonally-dry lowland and upland forest and forest margins, woodland, thicket, wooded grassland, and secondary vegetation.

Anamirta cocculus (Marathi: काकमारी) is a Southeast Asian and Indian climbing plant. It is the source of picrotoxin, a poisonous compound with stimulant properties. The plant is large-stemmed (up to 10 cm in diameter); the bark is "corky gray" with white wood. The "small, yellowish-white, sweet-scented" flowers vary between 6 and 10 millimeters across; the fruit produced is a drupe, "about 1 cm in diameter when dry".

Quercus douglasii, known as blue oak, is a species of oak endemic to California, common in the Coast Ranges and the foothills of the Sierra Nevada. It is California's most drought-tolerant deciduous oak, and is a dominant species in the blue oak woodland ecosystem. It is occasionally known as mountain oak and iron oak.

Orthotrichaceae is the only family of mosses in the order Orthotrichales. Many species in the family are epiphytic.

Dovyalis is a genus of shrubs and small trees. Recent genetic evidence has shown the genus to belong to the family Salicaceae; formerly it was classified in the family Flacourtiaceae. The 15 species are native to Africa (Ethiopia south to South Africa) and southern Asia (India, Sri Lanka). Some are cultivated for their fruit.

The scarlet gourds are a genus (Coccinia from the Greek, kokkinia or kokkinias - "red" or "scarlet") with 25 species. It is distributed in sub-Saharan Africa and with one species, C. grandis also in South Asia and Southeast Asia, and it is also introduced into the New World. Incidentally, C. grandis is also a cultivated crop and it is used for culinary and medical purposes.

Torreya taxifolia, commonly known as Florida torreya or stinking-cedar, but also sometimes as Florida nutmeg or gopher wood, is an endangered subcanopy tree of the yew family, Taxaceae. It is native to only a small glacial refugium in the southeastern United States, at the state border region of northern Florida and southwestern Georgia.

Tilioideae is a flowering plant subfamily in the family Malvaceae, though it was formerly considered a large group, placed at family rank and called Tiliaceae. Within the framework of the Angiosperm Phylogeny Groups III & IV systems, an extended family Malvaceae is recognized by uniting the core Malvales of the Cronquist system - Bombacaceae, Malvaceae sensu stricto, Sterculiaceae and Tiliaceae. Within the APG classification, Malvaceae contains a clade of 3 living genera placed as the subfamily Tilioideae.

Splachnaceae is a family of mosses, containing around 70 species in 6 genera. Around half of those species are entomophilous, using insects to disperse their spores, a characteristic found in no other seedless land plants. Many species in this family are coprophilous, growing exclusively on animal faeces or carrion. For this reason, certain genera such as Splachnum Hedw. are often referred to as dung mosses.

Dichrostachys is an Old World genus of flowering plants in the family Fabaceae. Their Acacia-like leaves are bi-pinnately compound. Unlike Acacia their thorns are hardened branchlets rather than modified stipules. They are native from Africa to Australasia, but a centre of diversity is present in Madagascar. Their name is derived from the Greek words dis (two), chroos (colour) and stachys (grain ear or spike), which in combination suggests their bi-colored inflorescences.

Acrocarpus is a genus of trees in the legume family, Fabaceae. It comprises one species, Acrocarpus fraxinifolius, the pink cedar, a large deciduous emergent tree native to Bangladesh, Bhutan, China, India, Indonesia, Laos, Myanmar, Nepal and Thailand. Its also known as Balangi or Kurungatti in India.

Adenostoma is a genus of shrubs in the rose family (Rosaceae) containing only two species, chamise (Adenostoma fasciculatum) and redshanks (Adenostoma sparsifolium). Both are native to the Californias.

Gaultheria mucronata (syn. Pernettya mucronata; also known as prickly heath, chaura, or murtillo) is a species of flowering plant in the family Ericaceae, native to southern Argentina and Chile. In volcanic areas of southern Chile Gaultheria mucronata is one of the dominant plant species above the tree line.

Ceriops is a genus of mangroves in the family Rhizophoraceae. There are 5 accepted species and 17 known synonyms.

Anisopappus is a genus of flowering plants in the family Asteraceae. The genus is primarily native to Africa and Madagascar, with one species (A. chinensis) extending into China and Southeast Asia. Species

Adenostoma fasciculatum, commonly known as chamise or greasewood, is a flowering plant native to California and Baja California. This shrub is one of the most widespread plants of the California chaparral ecoregion. Chamise produces a specialized lignotuber underground and at the base of the stem, known as a burl, that allow it to resprout after fire has off burned its stems. It is noted for its greasy, resinous foliage, and its status as one of California's most iconic chaparral shrubs.

Monotropoideae, sometimes referred to as monotropes, are a flowering plant subfamily in the family Ericaceae. Members of this subfamily are notable for their mycoheterotrophic and non-photosynthesizing or achlorophyllous characteristics.

Juniperus taxifolia (Bonin Islands juniper; Japanese: シマムロ Shimamuro) is a species of juniper, endemic to the Bonin Islands southeast of Japan. It is an evergreen coniferous shrub growing to a height of 1–3 m (rarely a small tree to 13 m tall). The leaves are needle-like, in whorls of three, light green, 7–14 mm long and 1-1.5 mm broad, with a double white stomatal band (split by a green midrib) on the inner surface. It is dioecious, with separate male and female plants. The seed cones are berry-like, green ripening in 18 months to reddish-brown with a variable light waxy coating; they are

Bromus carinatus is a species of brome grass known by the common names California brome and mountain brome.