Poison Sumac — Poison sumac (Toxicodendron vernix or Rhus vernix) is a woody shrub or small tree growing to 7 m (20 ft) tall. All parts of the plant contain a resin called urushiol that causes skin and mucous membrane irritation to humans. When burned, inhalation of the smoke causes diarrhea and other internal irritations. The head of the tree …

Poison Hemlock — Conium is a genus of two species of perennial herbaceous flowering plants in the family Apiaceae, native to Europe and the Mediterranean region (C. maculatum), and to southern Africa (C. chaerophylloides). By far the most familiar species is Conium maculatum (Hemlock or Poison Hemlock), the most common of several species of hemlock noted for their toxicity. It …

Poinsettia — Poinsettias (Euphorbia pulcherrima) are flowers of Mexican origin, native to the Pacific coast of the United States, some parts of central and southern Mexico (including the Mexican Pacific coast), and a few localities in Guatemala. They are named after Joel Roberts Poinsett, the first United States Ambassador to Mexico (technically first U.S. envoy to Mexico), who introduced the …

Philodendron — Philodendron Schott 1832, is a large genus of flowering plants from the arum family (Araceae), consisting of close to 1000 or more species according to TROPICOS (a service of the Missouri Botanical Garden). Taxonomically it is still poorly known with many undescribed species. Many are grown as ornamental and indoor plants. The name derives from the Greek philo …

Petunia — Petunia is a, trumpet shaped, widely-cultivated genus of flowering plants of South American origin, in the family Solanaceae. The popular flower got its name from French, which took the word petun ‘tobacco’ from a Tupi-Guarani language. Most of the varieties seen in gardens are hybrids (Petunia x hybrida). The origin of P. x hybrida is thought the be …

Peony — The peony or paeony (Paeonia) is the sole genus in the flowering plant family Paeoniaceae. They are native to Asia, southern Europe and western North America. Most are herbaceous perennial plants 0.5–1.5 metres tall, but some are woody shrubs up to 1.5–3 metres tall. They have compound, deeply lobed leaves, and large, often fragrant flowers, ranging from red …

Leadwort — Leadwort is a genus, Plumbago is a genus of 10-20 species of flowering plants in the family Plumbaginaceae, native to warm temperate to tropical regions of the world. Common names include plumbago and leadwort (names which are also shared by the genus Ceratostigma). The name Plumbago is derived from Latin plumbum (“lead”), either from the lead-blue flower colour …

Lavender — The Lavenders Lavandula are a genus of about 25-30 species of flowering plants in the mint family, Lamiaceae, native from the Mediterranean region south to tropical Africa and to the southeast regions of India. The genus includes annuals, herbaceous plants, subshrubs, and small shrubs. The native range extends across the Canary Islands, North and East Africa, south Europe …

Lady’s Slippers — Lady Slippers (aka Lady’s Slipper, Lady’s-slipper, Ladyslipper) is a term used to describe the orchids in the subfamily Cypripedioidea, which includes the genera Cypripedium, Mexipedium, Paphiopedilum, Phragmipedium and Selenipedium, distinguished by their slipper-shaped pouches (modified labellums), which function by trapping insects so that they are forced to climb up past the staminode, behind which they collect or …

Jack-in-the-Pulpit — Arisaema triphyllum, Jack-in-the-Pulpit, Bog onion, Brown dragon, Indian turnip, Wake robin or Wild turnip is a herbaceous perennial plant growing from a corm. It is a highly variable species typically growing from 30 to 65 cm in height with three parted leaves and flowers contained in a spadix that is covered by a hood. It is native to …