Crepis intermedia — Details

Crepis intermedia A. Gray:
United States (North America)

Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley. http://www.tropicos.org/Reference/1717
Munz, P. A. 1974. Fl. S. Calif. 1–1086. University of California Press, Berkeley. http://www.tropicos.org/Reference/1719

Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Physical Description

Morphology

Comments

Crepis intermedia is a somewhat unnatural group of polyploid apomicts that combines the features of multiple species, including C. acuminata, C. pleurocarpa, C. modocensis, and C. atribarba (E. B. Babcock 1947). The plants are usually over 25 cm, with leaves deeply pinnately lobed (gray-tomentose, cleft about halfway to midribs), with acuminate apices, and more or less flat-topped arrays of heads. The leaves vary greatly in size and lobing and are always gray-tomentose. The number of heads per plant is usually more than 20.

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Description

Perennials, 25–60 cm (taproots stout or slender, caudices swollen, simple or branched, covered with brown leaf bases). Stems 1–2, erect, branched (proximal branches elongate, branched distally), ± tomentose-canescent. Leaves basal and cauline; petiolate (petiole bases clasping); blades elliptic-lanceolate, 10–40 × 2–9 cm, margins pinnately lobed (lobes remote or close, entire or dentate), apices acute or acuminate, faces densely or sparsely gray-tomentose. Heads (10–)20–60, in ± flat-topped, compound, corymbiform or paniculiform arrays. Calyculi of 6–8, narrowly triangular, tomentulose bractlets 2–4 mm. Involucres narrowly cylindric, 10–16 × 3–5 mm. Phyllaries 7–10, (medially green) lanceolate, 10–13 mm (margins scarious), apices acute, abaxial faces ± tomentulose, sometimes with greenish eglandular setae, adaxial with fine hairs. Florets 7–12; corollas yellow, 14–30 mm. Cypselae yellow or golden brown, subcylindric, 6–9 mm, tapered distally, ribs 10–12 (smooth); pappi dusky white, 7–10 mm. 2n = 33, 44, 55, 88.

Flora of North America @ eFloras.org

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Diagnostic Description

Synonym

Crepis acuminata Nuttall var. intermedia (A. Gray) Jepson

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Wikipedia

Crepis intermedia

Crepis intermedia is a species of flowering plant in the daisy family known by the common name limestone hawksbeard. It is native to western North America, where it grows in many types of open and forested habitat. It is a perennial herb growing an erect, multibranched stem from a thick taproot, reaching up to 70 centimeters in height. It has woolly green herbage. The leaves are lined with triangular lobes and the lowest leaves approach 40 centimeters long. The inflorescence is an open array of many ligulate flower heads, each with woolly phyllaries and several yellow ray florets. The fruit is a narrow, ribbed achene just under a centimeter long.

Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Average rating: 2.5 of 5