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beak hawk's-beard, weedy hawksbeard

Turkish hawksbeard

Habit Annuals, biennials, or perennials, 3–120 cm (taproots slender to thick, caudices swollen). Annuals or biennials, 25–110 cm (taproots shallow).
Stems

1, erect to arcuate or decumbent (green or purple proximally), usually much branched, glabrate to hispid and/or tomentose, sometimes sparsely setose (setae black).

usually 1, erect, branched from middles or distally, densely hispidulous proximally.

Leaves

basal and cauline;

petiolate (bases clasping);

blades oblanceolate to ovate, often runcinate, 10–35 × 2–8 cm, margins pinnately lobed to toothed (terminal lobes relatively large), apices obtuse or acute, faces usually hirsute (hairs sometimes only on veins) or glabrous (cauline sessile, bases auriculate, clasping, margins ± toothed).

basal and cauline;

petiolate (petioles winged, bases clasping);

blades oblanceolate, runcinate, 16–19 × 2–4 cm, margins pinnately lobed, dentate, or finely denticulate, apices obtuse, faces finely hispidulous (hairs yellowish).

Involucres

cylindro-campanulate (becoming turbinate or urceolate in fruit), 5–14 × 5–6 mm.

campanulate, 8–10 × 4–6 mm.

Florets

50–70;

corollas yellow (reddish abaxially), 6–15 mm.

50–60;

corollas yellow (sometimes reddish distally), 10–11 mm.

Phyllaries

7–16, (reflexed at maturity) lanceolate, 10–12 mm, (margins green to yellowish), apices obtuse or acute (ciliate), abaxial faces tomentose and often stipitate-glandular, adaxial with fine, appressed hairs.

10–15, lanceolate (strongly tapered), 7–8 mm (bases strongly keeled, partly enclosing marginal cypselae, margins scarious), apices obtuse (ciliate), abaxial faces glabrous or glabrate, adaxial glabrous.

Calyculi

of 5–12, ovate to linear-lanceolate, glabrous bractlets 3–4 mm (reflexed in fruit, scarious).

of 7–9, linear, glabrous or glabrate bractlets 3–6 mm.

Heads

10–20, in lax, corymbiform arrays.

2–15, in corymbiform arrays.

Cypselae

(monomorphic or dimorphic) pale brown or yellowish, fusiform, 4–9 mm, outer wider with apices attenuate (not beaked), inner gradually tapered, beaked (beaks 2–5 mm, ± equal to bodies), ribs 10 (narrow);

pappi white (fine, soft), 3–6 mm.

golden brown, fusiform, 2.5–4 mm, ribs 10 (broad);

pappi bright white, 4–5 mm.

2n

= 8, 16.

= 8.

Crepis vesicaria

Crepis nicaeënsis

Phenology Flowering Feb–Oct. Flowering May–Aug.
Habitat Sandy clearings, hillsides Waste places, meadows
Elevation 0–300 m (0–1000 ft) 1400–1600 m (4600–5200 ft)
Distribution
from FNA
CA; CT; NC; NY; OR; PA; BC; Europe [Introduced in North America; introduced, South America]
[WildflowerSearch map]
[BONAP county map]
from FNA
MA; MI; OH; VT; WA; BC; Europe [Introduced in North America]
Discussion

Native to the Mediterranean region of western Europe, Crepis vesicaria is recognized by its annual or biennial habit, pinnately lobed leaves, reflexed calyculi, tomentose and glandular phyllaries, and slender, long-beaked inner cypselae. It is polymorphic; subspecies are recognized in Europe. E. B. Babcock (1947) identified the North American plants as subsp. taraxaciflora (Thuiller) Thellung, which some Europeans (T. G. Tutin et al. 1964–1980, vol. 4) have listed as a synonym of subsp. haenseleri (Boissier ex de Candolle) P. D. Sell.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Crepis nicaeënsis is distinguished by the annual or biennial habit, shallow root system, hispid stems, and glabrate phyllaries enclosing outer cypselae. It is similar in habit to C. biennis, which differs in its larger heads and 13–20-ribbed cypselae; it is considered closely related to C. capillaris (E. B. Babcock 1947).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 19, p. 238. FNA vol. 19, p. 232.
Parent taxa Asteraceae > tribe Cichorieae > Crepis Asteraceae > tribe Cichorieae > Crepis
Sibling taxa
C. acuminata, C. atribarba, C. bakeri, C. barbigera, C. biennis, C. bursifolia, C. capillaris, C. elegans, C. foetida, C. intermedia, C. modocensis, C. monticola, C. nana, C. nicaeënsis, C. occidentalis, C. pannonica, C. pleurocarpa, C. pulchra, C. rubra, C. runcinata, C. setosa, C. tectorum, C. zacintha
C. acuminata, C. atribarba, C. bakeri, C. barbigera, C. biennis, C. bursifolia, C. capillaris, C. elegans, C. foetida, C. intermedia, C. modocensis, C. monticola, C. nana, C. occidentalis, C. pannonica, C. pleurocarpa, C. pulchra, C. rubra, C. runcinata, C. setosa, C. tectorum, C. vesicaria, C. zacintha
Name authority Linnaeus: Sp. Pl. 2: 805. (1753) Balbis: in C. H. Persoon, Syn. Pl. 2: 376. (1807)
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