Aphelandra — Aphelandra is a genus of about 170 species of flowering plants in the family Acanthaceae, native to tropical regions of the Americas. They are evergreen shrubs growing to 1-2 m tall, with opposite, simple leaves 5-30 cm long, often with white veins. The flowers are produced in dense spikes, with brightly coloured bracts. Several species are grown as …

Anise — Anise or Aniseed, less commonly anís (stressed on the second syllable) (Pimpinella anisum), is a flowering plant in the family Apiaceae, native to the eastern Mediterranean region and southwest Asia. It is a herbaceous annual plant growing to 1m tall. The leaves at the base of the plant are simple, 2-5 cm long and shallowly lobed, while leaves …

Anemone — Anemone is a genus of about 120 species of flowering plants in the buttercup family Ranunculaceae in the north and south temperate zones. They are closely related to Pasque flower (Pulsatilla) and Hepatica (Hepatica); some botanists include both of these genera within Anemone. The plants are perennial herbs with an underground rootstock, and radical, more or less deeply …

Amaranth — Amaranthus, collectively known as amaranth or pigweed, is a cosmopolitan genus of herbs. Approximately 60 species are presently recognised, with inflorescences and foliage ranging from purple and red to gold. Members of this genus share many characteristics and uses with members of the closely related genus Celosia. Although several species are often considered weeds, people around the world …

Alyssum — Alyssum is a genus of about 100-170 species of flowering plants in the family Brassicaceae, native to Europe, Asia, and northern Africa, with the highest species diversity in the Mediterranean region. The genus comprises annual and perennial herbaceous plants or (rarely) small shrubs, growing to 10-100 cm tall, with oblong-oval leaves and yellow or white flowers (pink to …

Aloe — Aloe is a genus containing about four hundred species of flowering succulent plants. The genus is native to Africa and is common in South Africa’s Cape Province and the mountains of tropical Africa, and neighbouring areas such as Madagascar, the Arabian peninsula and the islands off Africa. The APG II system (2003) placed the genus in the family …

Ailanthus — Ailanthus (derived from ailanto, an Ambonese word probably meaning “tree of the gods” or “tree of heaven”) is a genus of trees belonging to the family Simaroubaceae, in the order Sapindales (formerly Rutales or Geraniales). The genus is native from east Asia south to northern Australasia. Also known as “ghetto palms” or “poverty trees”, they are ubiquitous in the …

Ageratum — Ageratum known as Whiteweed is a genus of about 60 tropical American herbs, annuals and perennials from the Sunflower family Asteraceae, tribe Eupatorieae. They form tussocks or small hills. They grow to a height of 75 cm. The opposite leaves are cordate or oval, hairy or tomentose. The margins are slightly toothed or serrate. The leaves form compact …

African Violet — Saintpaulia, commonly known as African violet, is a genus of 6 species of herbaceous perennial flowering plants in the family Gesneriaceae, native to Tanzania and adjacent southeastern Kenya in eastern tropical Africa, with a concentration of species in the Nguru mountains of Tanzania. The genus is most closely related to Streptocarpus, with recent phylogenetic studies suggesting it …

Acanthus — Acanthus is a genus of about 30 species of flowering plants in the family Acanthaceae, native to tropical and warm temperate regions of the Old World, with the highest species diversity in the Mediterranean region and Asia. Common names include Acanthus and Bear’s breeches. The genus comprises herbaceous perennial plants, rarely subshrubs, with spiny leaves and flower spikes …