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The leaves of Urtica gracilis are variable, elliptic, lanceolate, or ovate, and 6–20 cm long by 2–13 cm across, with a base that can either be rounded or shaped like a heart (rounded to cordate). The leaf edges have coarse teeth, sometimes with smaller teeth within each larger tooth ( doubly serrate ) and the ends are pointed. [ 3 ]
Urtica dioica, often known as common nettle, burn nettle, stinging nettle (although not all plants of this species sting) or nettle leaf, or just a nettle or stinger, is a herbaceous perennial flowering plant in the family Urticaceae. Originally native to Europe, much of temperate Asia and western North Africa, [2] it is now found worldwide.
The Urticaceae / ɜːr t ɪ ˈ k eɪ s iː / are a family, the nettle family, of flowering plants. The family name comes from the genus Urtica . The Urticaceae include a number of well-known and useful plants, including nettles in the genus Urtica , ramie ( Boehmeria nivea ), māmaki ( Pipturus albidus ), and ajlai ( Debregeasia saeneb ).
D. cordifolia is a straggly perennial shrub growing up to 10 m (33 ft) high, and the entire plant is covered with stinging hairs. [4] [6] It has large cordate leaves measuring up to 25 cm (9.8 in) long by 22 cm (8.7 in) wide, with toothed margins and petioles (leaf stems) almost as long as the leaf blade itself.
Urtica ferox, commonly known as tree nettle and, in Māori, ongaonga, taraonga, taraongaonga, оr okaoka, is a species of nettle endemic to New Zealand. Unlike the other species in the genus Urtica found in New Zealand, all of which are herbaceous, ongaonga is a large woody shrub that can grow to a height of 3 m (9.8 ft), with the base of the stem reaching 12 cm (4.7 in) in thickness.
Some studies measure exercise intensity by having subjects perform exercise trials to determine peak power output, [4] which may be measured in watts, heart rate, or average cadence (cycling). This approach attempts to gauge overall workload. An informal method to determine optimal exercise intensity is the talk test.
Dendrocnide is a genus of approximately 40 species [a] of plants in the nettle family Urticaceae. They have a wide distribution across North East India, Southeast Asia, Australia and the Pacific Islands. In Australia they are commonly known as stinging trees. [2] [1]
hedge nettle – Stachys; hemp nettle – Galeopsis; horse nettle: Agastache urticifolia – horse-nettle; Solanum carolinense – ball-nettle, Carolina horse-nettle; Solanum dimidiatum – western horse-nettle, robust horse-nettle; Solanum elaeagnifolium – bull nettle, silver-leaf nettle, white horse-nettle; Solanum rostratum – horse-nettle