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Firecracker penstemon has both cauline and basal leaves, those that are attached to the stems and ones that grow directly from the base of the plant, which are very deep green and glossy. [6] The basal leaves and lowest ones on the stems are normally 5 to 10 centimeters (2 to 4 in) in length, but on occasion may be as long as 20 cm (8 in).
These 281 species of Penstemon are considered valid by both World Flora Online (WFO) and Plants of the World Online (POWO), with the exception of Penstemon grandiflorus. [1] [2] In both POWO and WFO, it is regarded as a synonym of Penstemon bradburyi.
The common name "firecracker flower" refers to the seed pods, which are found after the flower has dried up, and tend to "explode" when near high humidity or rainfall. [6] The "explosion" releases the seeds onto the ground, thereby creating new seedlings. The Latin specific epithet infundibuliformis means funnel or trumpet shaped. [4]
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 Ameri
Penstemon gentianoides, the gentian beardtongue or gentian-leaved penstemon, is a species of flowering plant in the plantain family Plantaginaceae.Found on volcanic mountain slopes across Mexico and Central America, especially in Mexican mountain pine forests, it is a somewhat shrubby perennial herb that can grow up to 1.5 meters tall in good conditions.
Penstemon multiflorus is a species of flowering plant in the family Plantaginaceae. It is native to the United States [1] and commonly referred to as many-flower penstemon or many-flower beardtongue, is a flowering plant. It is a perennial between 1.5 and 2.5 feet high that blooms with white tubular shaped flowers. [2]
Penstemon richardsonii is a perennial that is often shrubby at the base and has several slender flowering stems that are 20 to 80 cm tall. The leaves are in opposite pairs borne on the flowering stem, are sessile (no petiole) except near the base, and are sharply serrate-dentate to irregularly pinnatifid and up to 7 cm long and 3 cm wide.
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 .
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