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The conifer division of plants includes the tallest organism, and the largest single-stemmed plants by wood volume, wood mass, and main stem circumference.The largest by wood volume and mass is the giant sequoia (Sequoiadendron giganteum), native to Sierra Nevada and California; it grows to an average height of 70–85 m (230–279 ft) and 5–7 m (16–23 ft) in diameter. [1]
Helianthus giganteus is a perennial herbaceous plant native to the northern United States and southern Canada that can grow up to 1–3 metres (3.3–9.8 ft) tall with instances to 4m (13 feet). The leaves are approximately 1 inch wide by 7 inches long, and partly rough. The flower heads are bright
Aristolochia grandiflora produces large solitary flowers from the axils of leaves. Leaves are cordate and can be up to 25 cm (9.8 in) wide. Flowers are heart shaped: 10–20 cm (3.9–7.9 in) wide and have tails that are up to 60 cm (24 in).
Genera from some other groups of vascular plants (like pteridophytes), which have similarly large numbers of species, include Selaginella, Asplenium and Cyathea. [ 1 ] Astragalus is the largest flowering plant genus, with more than 3,200 species, including Astragalus agnicidus .
Rafflesia arnoldii, the corpse flower, [2] or giant padma, [3] is a species of flowering plant in the parasitic genus Rafflesia. It is noted for producing the largest individual flower on Earth. [ 4 ]
Rafflesia (/ r ə ˈ f l iː z (i) ə,-ˈ f l iː ʒ (i) ə, r æ-/), [2] or stinking corpse lily, [3] is a genus of parasitic flowering plants in the family Rafflesiaceae. [4] The species have enormous flowers, the buds rising from the ground or directly from the lower stems of their host plants; one species has the largest flower in the world.
Erythronium oregonum is a North American species of flowering plant in the lily family which is known by the common name giant white fawnlily or Oregon fawn-lily. [3] [4] erythronium oregonum flower. It is native to western North America, where it grows in the Pacific Coast Ranges from southwestern British Columbia to northern California. [2 ...
This is an annual herb usually growing up to 2 m (6 ft 7 in) tall, but known to reach over 6 m (20 ft) in rich, moist soils. The tough stems have woody bases and are branching or unbranched. [5] Most leaves are oppositely arranged. The blades are variable in shape, sometimes palmate with five lobes, and often with toothed edges.