Arisaema dracontium | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Alismatales |
Family: | Araceae |
Genus: | Arisaema |
Species: | A. dracontium |
Binomial name | |
Arisaema dracontium | |
Arisaema dracontium, the dragon-root or green dragon, is a herbaceous perennial plant in the genus Arisaema and the family Araceae. It is native to North America from Quebec through Minnesota south through Florida and Texas, where it is found growing in damp woods. It has also been reported from northeastern Mexico (Nuevo León + Veracruz) [1] Plants grow 20–50 centimetres (7.9–19.7 in) tall when in bloom and after flowering reach 100 centimetres (39 in), and each grows from a corm. [2] Normally, a plant produces one leaf with a long petiole, its leaf is composed of 7 to 13 leaflets, with its central leaflet being the largest one and with leaflets becoming smaller as they are produced distally, the leaflets are held out horizontally over the plant. During flowering in spring, a single slender, green spathe 3–6 centimetres (1.2–2.4 in) long is produced; it covers a tapering, long thin spadix. The tail-like spadix grows out around the top of its spathe. After flowering, up to 150 berries are produced in a club-shaped column. In late summer, the green berries turn orange-red, each berry produces 1 to 3 seeds. [3] It is listed as a vulnerable species in Canada.
Harriet Martineau, in recounting her travels in America in the 1830s, reported observing a young woman "rubbing her teeth with dragon-root." [4]
Within the genus Arisaema, A. dracontium is classified in the section Tortuosa and is most closely related to the Mexican A. macrophyllum . In fact, A. macrophyllum has sometimes been considered a subspecies of A. dracontium. The rest of the section contains species from east Asia and India. A. dracontium is not a close relative to the other American Arisaema species, A. triphyllum (jack-in-the-pulpit), which is in a different section of Arisaema. [5] Like A. triphyllum, the tuberous taproot can cause a burning sensation if eaten raw. [6]
The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe. Also known as the arum family, members are often colloquially known as aroids. This family of 140 genera and about 4,075 known species is most diverse in the New World tropics, although also distributed in the Old World tropics and northern temperate regions.
Amorphophallus is a large genus of some 200 tropical and subtropical tuberous herbaceous plants from the Arum family (Araceae), native to Asia, Africa, Australia and various oceanic islands. A few species are edible as "famine foods" after careful preparation to remove irritating chemicals. The genus includes the Titan arum of Indonesia, which has the largest inflorescence of any plant in the genus, and is also known as the 'corpse flower' for the pungent odour it produces during its flowering period, which can take up through seven years of growth before it occurs.
A raceme or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. Examples of racemes occur on mustard, radish, and orchid plants.
In botany, a spadix is a type of inflorescence having small flowers borne on a fleshy stem. Spadices are typical of the family Araceae, the arums or aroids. The spadix is typically surrounded by a leaf-like curved bract known as a spathe. For example, the "flower" of the well known Anthurium spp. is a typical spadix with a large colorful spathe.
Philodendron is a large genus of flowering plants in the family Araceae. As of September 2015, the World Checklist of Selected Plant Families accepted 489 species; other sources accept different numbers. Regardless of number of species, the genus is the second-largest member of the family Araceae, after genus Anthurium. Taxonomically, the genus Philodendron is still poorly known, with many undescribed species. Many are grown as ornamental and indoor plants. The name derives from the Greek words philo- 'love, affection' and dendron 'tree'. The generic name, Philodendron, is often used as the English name.
Anthurium is a genus of about 1,000 species of flowering plants, the largest genus of the arum family, Araceae. General common names include anthurium, tailflower, flamingo flower, pigtail plant, and laceleaf.
Arisaema is a large and diverse genus of the flowering plant family Araceae. The largest concentration of species is in China and Japan, with other species native to other parts of southern Asia as well as eastern and central Africa, Mexico and eastern North America. Asiatic species are often called cobra lilies, while western species are often called jack-in-the-pulpit; both names refer to the distinctive appearance of the flower, which consists of an erect central spadix rising from a spathe.
Symplocarpus foetidus, commonly known as skunk cabbage or eastern skunk cabbage, is a low-growing plant that grows in wetlands and moist hill slopes of eastern North America. Bruised leaves present an odor reminiscent of skunk.
Arum maculatum is a woodland flowering plant species in the family Araceae. It is native across most of Europe, as well as Eastern Turkey and the Caucasus.
Spathiphyllum is a genus of about 47 species of monocotyledonous flowering plants in the family Araceae, native to tropical regions of the Americas and southeastern Asia. Certain species of Spathiphyllum are commonly known as spath or peace lilies.
Arisaema triphyllum, the Jack-in-the-pulpit, is a species of flowering plant in the arum family Araceae. It is a member of the Arisaema triphyllum complex, a group of four or five closely related taxa in eastern North America. The specific name triphyllum means "three-leaved", a characteristic feature of the species, which is also referred to as Indian turnip, bog onion, and brown dragon.
Arum is a genus of flowering plants in the family Araceae, native to Europe, northern Africa, and western and central Asia, with the highest species diversity in the Mediterranean region. Frequently called arum lilies, they are not closely related to the true lilies Lilium. Plants in closely related Zantedeschia are also called "arum lilies".
Orontium aquaticum, sometimes called golden-club, floating arum, never-wets or tawkin, is a species of flowering plants in the family Araceae. It is the single living species in the genus Orontium, which also contains several extinct species described from fossils. O. aquaticum is endemic to the eastern United States and is found growing in ponds, streams, and shallow lakes. It prefers an acidic environment. The leaves are pointed and oval with a water repellent surface. The inflorescence is most notable for having an extremely small almost indistinguishable sheath surrounding the spadix. Very early in the flowering this green sheath withers away leaving only the spadix.
Arisaema flavum is a species of flowering plant widespread across north-eastern Africa and southern Asia. It is native to Ethiopia, Somalia, the Arabian Peninsula, Pakistan, Afghanistan, Nepal, Assam, Himalayas, Tibet, Yunnan, and Sichuan. The species epithet flavum is Latin for yellow and indicates its flower colour.
Arisaema quinatum is a species of flowering plant in the arum family Araceae. It is a member of the Arisaema triphyllum complex, a group of closely related taxa in eastern North America. The specific name quinatum means "divided into five lobes", a reference to its characteristic leaves. It is commonly known as the southern Jack-in-the-pulpit but some refer to it as Preacher John.
Arisaema pusillum is a species of flowering plant in the arum family Araceae. It is a member of the Arisaema triphyllum complex, a group of closely related taxa in eastern North America. The specific name pusillum, which means "very small, slender", describes the overall size of the plant relative to that of the more common Arisaema triphyllum. It is commonly known as the small Jack-in-the-pulpit. It is sometimes referred to as the swamp Jack, not to be confused with Arisaema stewardsonii, which is also known by that name.
Arisaema stewardsonii is a species of flowering plant in the arum family Araceae. It is a member of the Arisaema triphyllum complex, a group of closely related taxa in eastern North America. The specific name stewardsonii honors American botanist Stewardson Brown (1867–1921). It is commonly known as the bog Jack-in-the-pulpit. It is sometimes referred to as the swamp Jack-in-the-pulpit, not to be confused with Arisaema pusillum, which is also known by that name.
Arisaema acuminatum is a species of flowering plant in the arum family Araceae. It is a member of the Arisaema triphyllum complex, a group of closely related taxa in eastern North America. The specific name acuminatum means "with a long, narrow and pointed tip", which describes the shape of the spathe hood. The species is commonly known as the Florida Jack-in-the-pulpit.
Arisaema propinquum, or Wallach's cobra lily, is a species of flowering plant the family Araceae. Arisaema propinquum occurs in the Himalayas.
Arisaema heterophyllum, the dancing crane cobra lily, belongs to the monocotyledonous flowering family Araceae. It is a perennial, rhizomatous herb native to East Asia. It has a spadix inflorescence and can be recognized by its green spathe and comparatively smaller central leaflet.
Cette plante, arisaema dracontium a été repérée au sommet du Mont Ngaoundéré (une seule d'ailleurs) dans l'Adamaoua au Cameroun. Noboudem Paul