Difference between revisions of "Grindelia squarrosa"
Mém. Mus. Hist. Nat. 5: 50. 1819.
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|place=5: 50. 1819 | |place=5: 50. 1819 | ||
|year=1819 | |year=1819 | ||
| + | }} | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
}} | }} | ||
|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Donia squarrosa | |name=Donia squarrosa | ||
|authority=Pursh | |authority=Pursh | ||
| + | |rank=species | ||
|publication_title=Fl. Amer. Sept. | |publication_title=Fl. Amer. Sept. | ||
|publication_place=2: 559. 1813 | |publication_place=2: 559. 1813 | ||
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|name=Grindelia aphanactis | |name=Grindelia aphanactis | ||
|authority=Rydberg | |authority=Rydberg | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Grindelia nuda | |name=Grindelia nuda | ||
|authority=Alph. Wood | |authority=Alph. Wood | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Grindelia nuda var. aphanactis | |name=Grindelia nuda var. aphanactis | ||
|authority=(Rydberg) G. L. Nesom | |authority=(Rydberg) G. L. Nesom | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Grindelia serrulata | |name=Grindelia serrulata | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Grindelia squarrosa var. nuda | |name=Grindelia squarrosa var. nuda | ||
|authority=(Alph. Wood) A. Gray | |authority=(Alph. Wood) A. Gray | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Grindelia squarrosa var. serrulata | |name=Grindelia squarrosa var. serrulata | ||
|authority=(Rydberg) Steyermark | |authority=(Rydberg) Steyermark | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Grindelia;Grindelia squarrosa | |hierarchy=Asteraceae;Asteraceae tribe Astereae;Grindelia;Grindelia squarrosa | ||
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|elevation=(10–)200–2900 m | |elevation=(10–)200–2900 m | ||
|distribution=Alta.;B.C.;Man.;Ont.;Que.;Sask.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Tex.;Utah;Vt.;Va.;Wash.;Wis.;Wyo.;Mexico (Chihuahua);introduced in Asia (Ukraine). | |distribution=Alta.;B.C.;Man.;Ont.;Que.;Sask.;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Tex.;Utah;Vt.;Va.;Wash.;Wis.;Wyo.;Mexico (Chihuahua);introduced in Asia (Ukraine). | ||
| − | |discussion=<p><i>Grindelia squarrosa</i> is probably native to the Great Plains and, perhaps, Rocky Mountain areas; it is widely introduced in other areas. Some plants are intermediate between it and <i>G. hirsutula</i> (i.e., between <i>G. squarrosa</i> and G. perennis, which has been treated as a variety of <i>G. squarrosa</i>). Plants of <i>G. squarrosa</i> with relatively narrow leaf blades (lengths mostly 5–8 times widths), mostly from the western part of the range of the species, have been treated as <i>G. squarrosa</i> var. serrulata. G. L. Nesom (1990i) and others have treated discoid plants included here in <i>G. squarrosa</i> as distinct (as G. aphanactis, G. nuda, and/or G. nuda vars. aphanactis and nuda); Nesom reported cypselae to be dimorphic in heads of radiate plants and monomorphic in discoid plants and noted that populations with discoid plants occur mostly south and west of populations with radiate plants. According to Nesom, plants of G. nuda with stems usually reddish (versus sometimes greenish), lengths of blades of mid-cauline leaves 4–10 (versus 1.5–4) times widths, and cypselae ± deeply furrowed (versus striate to shallowly furrowed) should be called G. nuda < | + | |discussion=<p><i>Grindelia squarrosa</i> is probably native to the Great Plains and, perhaps, Rocky Mountain areas; it is widely introduced in other areas. Some plants are intermediate between it and <i>G. hirsutula</i> (i.e., between <i>G. squarrosa</i> and G. perennis, which has been treated as a variety of <i>G. squarrosa</i>). Plants of <i>G. squarrosa</i> with relatively narrow leaf blades (lengths mostly 5–8 times widths), mostly from the western part of the range of the species, have been treated as <i>G. squarrosa</i> var. serrulata. G. L. Nesom (1990i) and others have treated discoid plants included here in <i>G. squarrosa</i> as distinct (as G. aphanactis, G. nuda, and/or G. nuda vars. aphanactis and nuda); Nesom reported cypselae to be dimorphic in heads of radiate plants and monomorphic in discoid plants and noted that populations with discoid plants occur mostly south and west of populations with radiate plants. According to Nesom, plants of G. nuda with stems usually reddish (versus sometimes greenish), lengths of blades of mid-cauline leaves 4–10 (versus 1.5–4) times widths, and cypselae ± deeply furrowed (versus striate to shallowly furrowed) should be called G. nuda <i></i>var.<i> aphanactis</i>.</p><!-- |
--><p>Hybrids between <i>Grindelia squarrosa</i> (nuda) and <i>G. arizonica</i> have been recorded from Arizona and New Mexico.</p> | --><p>Hybrids between <i>Grindelia squarrosa</i> (nuda) and <i>G. arizonica</i> have been recorded from Arizona and New Mexico.</p> | ||
|tables= | |tables= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Grindelia squarrosa | name=Grindelia squarrosa | ||
| − | |||
|authority=(Pursh) Dunal | |authority=(Pursh) Dunal | ||
|rank=species | |rank=species | ||
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|publication title=Mém. Mus. Hist. Nat. | |publication title=Mém. Mus. Hist. Nat. | ||
|publication year=1819 | |publication year=1819 | ||
| − | |special status= | + | |special status=Illustrated |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_984.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Grindelia | |genus=Grindelia | ||
Latest revision as of 20:07, 5 November 2020
Biennials, perennials, or subshrubs (perhaps flowering first year, usually short-lived), (10–)40–100 cm. Stems erect, usually whitish or stramineous, sometimes reddish or grayish, glabrous. Cauline leaf blades oval, ovate, obovate, or oblong to spatulate, oblanceolate, lanceolate, or linear, (10–)15–70 mm, lengths 2–5(–10) times widths, bases ± clasping, margins usually crenate to serrate (teeth mostly 3–6+ per cm, rounded to obtuse, resin-tipped), rarely entire, apices obtuse to acute, faces glabrous, strongly gland-dotted. Heads usually in open to crowded, corymbiform arrays, rarely borne singly. Involucres broadly urceolate to hemispheric or globose, 6–11 × 8–20+ mm. Phyllaries in 5–6 series, reflexed to spreading or appressed, filiform or linear to lance-linear or lance-subulate, apices usually looped to hooked, sometimes recurved to nearly straight, subterete to subulate, moderately to strongly resinous. Ray florets 0 or (12–)24–36(–40); laminae 8–14 mm. Cypselae whitish, stramineous, brown, or gray, 1.5–4.5 mm, apices smooth, coronate, or knobby, faces smooth, striate, or ± furrowed; pappi of 2–3(–8), straight or contorted to curled, smooth or barbellulate to barbellate, subulate scales or setiform awns 2.5–5.5 mm, shorter than disc corollas. 2n = 12.
Phenology: Flowering Jul–Sep(–Oct).
Habitat: Disturbed sites, plains, hills, roadsides, along streams, sands, clays, and subalkaline soils
Elevation: (10–)200–2900 m
Distribution
Alta., B.C., Man., Ont., Que., Sask., Ariz., Ark., Calif., Colo., Conn., Del., D.C., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.Dak., Tex., Utah, Vt., Va., Wash., Wis., Wyo., Mexico (Chihuahua), introduced in Asia (Ukraine).
Discussion
Grindelia squarrosa is probably native to the Great Plains and, perhaps, Rocky Mountain areas; it is widely introduced in other areas. Some plants are intermediate between it and G. hirsutula (i.e., between G. squarrosa and G. perennis, which has been treated as a variety of G. squarrosa). Plants of G. squarrosa with relatively narrow leaf blades (lengths mostly 5–8 times widths), mostly from the western part of the range of the species, have been treated as G. squarrosa var. serrulata. G. L. Nesom (1990i) and others have treated discoid plants included here in G. squarrosa as distinct (as G. aphanactis, G. nuda, and/or G. nuda vars. aphanactis and nuda); Nesom reported cypselae to be dimorphic in heads of radiate plants and monomorphic in discoid plants and noted that populations with discoid plants occur mostly south and west of populations with radiate plants. According to Nesom, plants of G. nuda with stems usually reddish (versus sometimes greenish), lengths of blades of mid-cauline leaves 4–10 (versus 1.5–4) times widths, and cypselae ± deeply furrowed (versus striate to shallowly furrowed) should be called G. nuda var. aphanactis.
Hybrids between Grindelia squarrosa (nuda) and G. arizonica have been recorded from Arizona and New Mexico.
Selected References
None.