Herbs 25-150 cm tall, biennial. Stems grayish white, erect, branched above, winged, with sparse long multicellular hairs and cobwebby, densely felted above; wings toothed, teeth ending in a long spine. Leaves herbaceous, discolorous, abaxially grayish white and densely felted, adaxially green to yellowish green, rough and densely covered with ca. 1.5 mm spinules. Middle cauline leaves sessile, linear-lanceolate, lanceolate, or oblanceolate, 10-15 × 4-5 cm, bipinnatipartite; primary segments 3 or 4 pairs, equally or unequally forked; secondary segments triangular to lanceolate, fringed with spinules, apex with a 5-10 mm spine; terminal lobe lanceolate, fringed with spinules and a few spines 5-10 mm. Upper cauline leaves similar but gradually smaller upward. Bracts linear, margin with long spines. Capitula few to many, paniculate-corymbose to racemose, erect. Involucre ovoid, 3-5 cm in diam., glabrous. Phyllaries imbricate, in ca. 10 rows, lacking wings and scarious appendage; outer and middle phyllaries 0.8-3 × 0.2-0.4 cm, basal portion triangular, lanceolate, or linear, apical portion subulate, 5-9 mm, and narrowed into a spine; inner phyllaries linear, ca. 3.4 × 0.3 cm, apex acuminate. Florets bisexual. Corolla red, ca. 3 cm, tube filiform, ca. 2 cm. Achene brown, ca. 4 mm. Pappus bristles white, to 3 cm. Fl. and fr. Jul-Aug. 2n = 34, 68.
Biennials, 30–200(–300) cm; taproots. Stems 1–many, erect or ascending, branches few–many, ascending, villous with septate trichomes. Leaves: blades oblong-lanceolate to obovate, 15–40 × 6–15 cm, margins plane or revolute, coarsely 1–2-pinnatifid with rigidly divergent lobes, sometimes merely spinose-dentate, lobes triangular to lanceolate, entire to spiny-dentate, main spines 2–10 mm, abaxial faces gray-tomentose, villous with septate trichomes along veins, adaxial green, covered with short appressed bristlelike spines, sometimes tomentose when young; basal present or absent at flowering, petioles winged, bases tapered; principal cauline winged-petiolate, mid and distal becoming sessile, well distributed or not, progressively reduced distally, at least distal decurrent as long spiny wings; distal cauline often more deeply lobed than proximal, main lobes rigidly spiny, margins spinulose, otherwise entire. Heads few–many in corymbiform or paniculiform arrays. Peduncles 1–6 cm. Involucres hemispheric to campanulate, 3–4 × 2–4 cm, loosely arachnoid-tomentose. Phyllaries in 10–12 series, strongly imbricate, linear-lanceolate (outer) to linear (inner), outer and middle appressed, (bases stramineous), margins entire, abaxial faces without glutinous ridge, apices radiating, greenish, spines 2–5 mm; apices of inner phyllaries flat, serrulate to minutely erose. Corollas purple (rarely white), 25–35 mm, tubes 18–25 mm, throats 5–6 mm, lobes 5–7 mm; style tips 3.5–6 mm. Cypselae light brown with darker streaks, 3–4.5 mm, apical collar not differentiated; pappi 20–30 mm. 2n = 68.
"Biennial weed 5–15 dm; stem conspicuously spiny- winged by the decurrent lf-bases, copiously spreading-hirsute to sometimes arachnoid; lvs strongly spiny, pinnatifid, the larger ones with the lobes again toothed or lobed, scabrous-hispid above, thinly white-tomentulose to sometimes green and merely hirsute beneath; heads several, purple; invol 2.5–4 cm, its bracts all spine-tipped, without any well developed glutinous dorsal ridge; achenes 3–4 mm; 2n=68. Pastures, fields, roadsides, and waste places; native of Eurasia, now widely established in N. Amer. June–Oct. (C. lanceolatum, misapplied)"
50–150 (–200) cm hoch. Stängel spinnwebig, durch herablaufende Blattränder stachelig geflügelt. Blätter steif, fiederteilig, mit lanzettlichen, in einen kräftigen, gelblichen Stachel endigenden Abschnitten, oberseits stachelig behaart, grün, unters
Biennial herb, up to 1.5 m high, monoecious. Heads large; discoid. Upper branches irregularly and spiny winged. Leaves deeply pinnately parted, segments ending in long, stout spine, margins also with shorter, finer spines, upper surface rough, scabrous, lower glabrate to grey tomentose. Flowers reddish purple, rarely white.
Biennial herb, up to 1.5 m high. Stems lightly arachnoid, upper branches irregularly and spiny winged. Leaves alternate, sessile; blade oblong to obovate in outline, deeply pinnately parted, segments triangular, ending in long, stout spine, margins also with shorter, finer spines, upper surface rough, scabrous, lower glabrate to grey-tomentose, base decurrent. Heads large, discoid, solitary or 2 or 3 clustered at tips of branches. Involucral bracts in many rows, linear, spine-tipped. Flowers: disc florets only, reddish purple, rarely white; Nov.-Apr. Fruit with cypsela obovate, obscurely 4-angled, pale with dark vertical streaks. Pappus of many plumose bristles connate at base.
|Spear plume thistle||English||IE|