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Silphium perfoliatum, the cup plant [2] or cup-plant, is a species of flowering plant in the family Asteraceae, native to eastern and central North America. It is an erect herbaceous perennial with triangular toothed leaves, and daisy-like yellow composite flower heads in summer. [3] The specific epithet perfoliatum means "through the leaf." [4]
The flowering stem is usually very short so that the flowers appear low down among the leaves. The fleshy flowers are bell-, urn- or cup-shaped. [4] They vary considerably in size and shape, although few are showy. The flowers of A. longipedunculata are yellow and, unusually for the genus, are borne on scapes up to 20 cm (8 in) high.
Young plants have a single unbranched stem with a rosette of leaves until the growing tip flowers or is damaged, after which it branches, producing two or more new stems; thereafter, branching increases with subsequent flowering episodes. [1] [3] If a stem is damaged, it will ooze red latex. [4]
The flower varies in shape from an open cup to a narrow hanging tube. In the species the flowers are mainly in shades of yellow through orange to red. The flowers are arranged in umbels (i.e. the flower-stalks or pedicels radiate from a single point); each umbel has a long stalk or peduncle. Several bracts subtend the umbels.
A yellow trout lily produces an erect flower stalk with a nodding, bisexual flower with 6 recurved, yellow, lanceolate tepals. The 20 to 33 mm long tepals are composed of 3 petals and 3 petal-like sepals. [3] E. americanum does not flower for the first 4 to 7 years of its life. [5] [6] In any given colony, only 0.5% will have flowers. [8] [3]
Aureolaria pedicularia has flowers with yellow petals. The leaves are simple, meaning they do not separate into leaflets. The leaf arrangement is opposite. There are two leaves at each attachment of a leaf on the stem or branch on the flower. The edges of the leaf blades have lobes. The flowers of Aureolaria pedicularia are bilateral. Each ...
The plant grows 3-8 feet tall with an unbranched stem until reaching the inflorescence at the very top. [5] Its yellow flower heads, which bloom in late summer through early fall, are 1-2 inches wide and consist of up to 10 bright yellow ray florets that are angled downward, each bearing a notch at the end, as well as a spherical cluster of ...
The flower stalks arise from basal rosettes of strap-shaped leaves. The terminal clusters of fragrant flowers are green, white or yellow, and can be large and spectacular. The genus name is derived from the Greek words ὑμήν (hymen), meaning "membrane", and καλός (kalos), meaning "beautiful". It refers to the curious shape of the ...