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[1] [2] In both POWO and WFO, it is regarded as a synonym of Penstemon bradburyi. However, P. grandiflorus continues to be widely used as the correct species name in North America, including by the Flora of North America and the USDA Natural Resources Conservation Service PLANTS database (PLANTS).
Showy beardtongue or showy penstemon is a common name for several plants and may refer to: Penstemon cobaea, native to the south central United States, with pink to purple flowers; Penstemon speciosus, native to the western United States, with blue flowers; Penstemon spectabilis, native to California and Baja California, with purple flowers
Penstemon / ˈ p ɛ n s t ɪ m ən /, [2] the beardtongues, is a large genus of roughly 280 species of flowering plants native to North America from northern Canada to Central America. It is the largest genus of flowering plants endemic to North America.
Penstemon spectabilis is a perennial herb that grows in an upright or mounding fashion, attaining a maximum height of 2-4 feet and a maximum width of 3-4 feet during its 5-10 year lifespan. [ 1 ] The thin leaves are lance-shaped to oval, toothed on the edges, [ 2 ] and up to 10 centimeters in length.
Penstemon grandiflorus basal leaves. Penstemon grandiflorus is a large herbaceous plant with flowering stems that can reach as much as 120 centimeters in height or be as short as 40 centimeters. More commonly the plants will be 50–90 centimeters in height at full size. [2] The whole of the stem and leaves are smooth and free of hairs .
The leaves are usually lance-shaped and sometimes folded lengthwise, usually less than 15 cm (6 in) long. They are arranged oppositely and often clasp the stem at the bases. The showy inflorescence bears tubular flowers with expanded mouths 26–38 mm (1– 1 + 1 ⁄ 2 in) long. The flowers are light to deep blue, lavender, and purple, and ...
Penstemon palmeri, known by the common name Palmer's penstemon, is a species of perennial flowering plant in the genus Penstemon that is notable for its showy, rounded flowers, and for being one of the few scented penstemons. [1] [2] The plant, in the family Plantaginaceae, is named after the botanist Edward Palmer.
Penstemon calycosus has some of the largest and showiest flowers of the penstemons native to the eastern United States. [4] They measure 2.0–3.5 cm (0.79–1.38 in) long with a diameter of 0.8–1.1 cm (0.31–0.43 in). Externally the flowers are pale lavender to violet with faint nectar guides. [3]