Difference between revisions of "Cirsium horridulum"
Fl. Bor.-Amer. 2: 90. 1803.
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|common_names=Bristly or horrid or yellow or bull thistle | |common_names=Bristly or horrid or yellow or bull thistle | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms= | |synonyms= | ||
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-->{{Treatment/Body | -->{{Treatment/Body | ||
| − | |distribution= | + | |distribution=Ala.;Ark.;Conn.;Del.;Fla.;Ga.;La.;Maine;Mass.;Md.;Miss.;N.C.;N.H.;N.J.;N.Y.;Okla.;Pa.;R.I.;S.C.;Tenn.;Tex.;Va.;Mexico. |
|discussion=<p>Varieties 4 (3 in the flora).</p><!-- | |discussion=<p>Varieties 4 (3 in the flora).</p><!-- | ||
--><p>Although several variants have been given taxonomic recognition as species, these seem at most races. Flower color varies greatly, sometimes within populations and sometimes on a populational or regional basis. Herbarium specimens are sometimes difficult to assign to variety.</p> | --><p>Although several variants have been given taxonomic recognition as species, these seem at most races. Flower color varies greatly, sometimes within populations and sometimes on a populational or regional basis. Herbarium specimens are sometimes difficult to assign to variety.</p> | ||
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|basionyms= | |basionyms= | ||
|family=Asteraceae | |family=Asteraceae | ||
| − | |distribution= | + | |distribution=Ala.;Ark.;Conn.;Del.;Fla.;Ga.;La.;Maine;Mass.;Md.;Miss.;N.C.;N.H.;N.J.;N.Y.;Okla.;Pa.;R.I.;S.C.;Tenn.;Tex.;Va.;Mexico. |
|reference=None | |reference=None | ||
|publication title=Fl. Bor.-Amer. | |publication title=Fl. Bor.-Amer. | ||
|publication year=1803 | |publication year=1803 | ||
| − | |special status= | + | |special status=Illustrated |
| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V19_62.xml |
|tribe=Asteraceae tribe Cardueae | |tribe=Asteraceae tribe Cardueae | ||
|genus=Cirsium | |genus=Cirsium | ||
Revision as of 20:39, 27 May 2020
Biennials or perennials, (± fleshy), 15–250 cm; stout taproots and a fascicle of fleshy lateral roots, often perennating by root sprouts. Stems 1–several, usually erect, often stout, glabrous to densely tomentose; branches 0–many, spreading to ascending, short, stout. Leaves: blades linear to oblanceolate or oblong-elliptic, 10–40 × 2–10 cm, unlobed and spiny-dentate to deeply pinnatifid, lobes spiny-dentate or coarsely lobed, main spines stout, 5–30 mm, abaxial faces subglabrous to loosely tomentose, adaxial glabrous to ± densely villous with septate trichomes; basal present at flowering, spiny winged-petiolate, bases often tapered; principal cauline sessile, well distributed, often not much reduced distally, bases often ± auriculate-clasping; distal cauline often spinier than the proximal. Heads 1–20 in subcapitate to corymbiform arrays (each closely subtended by an involucre-like ring of spiny-margined bracts). Peduncles 0–5 cm. Involucres hemispheric to campanulate, 3–5 × 3–8 cm. Phyllaries in 5–9 series, subequal to imbricate, light green to stramineous, lanceolate to linear, distally often with reddish margins, abaxial faces without glutinous ridge, often ± thinly tomentose, often scabridulous in submarginal bands; outer and middle appressed-ascending, bodies usually reddish-tinged, margins setulose-ciliolate, apices acuminate, spines 1–2 mm, weak; apices of inner straight, flat. Corollas white to yellow, pink, purple, or red, 30–47 mm, tubes 11–30 mm, throats 6–10 mm, lobes 7–10 mm; style tips 3–5 mm. Cypselae straw-colored to tan, 4–6 mm, apical collars weakly differentiated; pappi 25–35 mm. 2n = 32, 33, 34, 35.
Distribution
Ala., Ark., Conn., Del., Fla., Ga., La., Maine, Mass., Md., Miss., N.C., N.H., N.J., N.Y., Okla., Pa., R.I., S.C., Tenn., Tex., Va., Mexico.
Discussion
Varieties 4 (3 in the flora).
Although several variants have been given taxonomic recognition as species, these seem at most races. Flower color varies greatly, sometimes within populations and sometimes on a populational or regional basis. Herbarium specimens are sometimes difficult to assign to variety.
Selected References
None.
Lower Taxa
Key
| 1 | Stems densely tomentose; involucres ± densely tomentose | Cirsium horridulum var. horridulum |
| 1 | Stems glabrous or sparsely tomentose; involucres glabrous | > 2 |
| 2 | Leaves shallowly to deeply pinnatifid, main spines 10–30 mm | Cirsium horridulum var. megacanthum |
| 2 | Leaves spinose-dentate to shallowly pinnatifid, main spines mostly 5–10 mm | Cirsium horridulum var. vittatum |