Difference between revisions of "Microseris douglasii"
Jahresber. Pollichia 22–24: 308. 1866.
Common names: Douglas’s silverpuffs
Illustrated
Basionym: Calaïs douglasii de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 7: 85. 1838
Treatment appears in FNA Volume 19. Treatment on page 343. Mentioned on page 338, 339, 340, 345, 347.
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|common_names=Douglas’s silverpuffs | |common_names=Douglas’s silverpuffs | ||
| − | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }} | ||
| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Calaïs douglasii | |name=Calaïs douglasii | ||
|authority=de Candolle | |authority=de Candolle | ||
| + | |rank=species | ||
| + | |publication_title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. | ||
| + | |publication_place=7: 85. 1838 | ||
}} | }} | ||
|synonyms= | |synonyms= | ||
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| − | --><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 5–40 cm; taprooted. <b>Leaves</b> basal; petiolate; blades linear to oblanceolate, 3–25 cm, margins entire, dentate, or pinnately lobed (lobes slender, tapering), apices acute to acuminate, faces ± scurfy-puberulent. <b>Peduncles</b> erect or curved-ascending, ebracteate. <b>Involucres</b> globose to fusiform in fruit, 7–16 mm. <b>Phyllaries</b>: apices erect, acute to acuminate; outer deltate, glabrous or lightly scurfy-puberulent; inner lanceolate, faces often lightly black-villous on margins (midveins often purple-lined, thickened). <b>Florets</b> 5–200; corollas yellow or white, equaling or surpassing phyllaries by 1–3 mm. <b>Cypselae</b> columnar or obconic, 3–10 mm; pappi of (0–)1–5, white to yellow, brown, or blackish, aristate scales 0.5–7 mm (± arcuate, usually distinctly involute, except subsp. tenella, often abaxially villous, midveins usually tapering distally from thick bases, except subsp. tenella, widths less than 1/5 bodies), aristae (white or straw-colored, ± stout) barbellate. <b>2n</b> = 18.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 5–40 cm; taprooted. <b>Leaves</b> basal; petiolate; blades linear to oblanceolate, 3–25 cm, margins entire, dentate, or pinnately lobed (lobes slender, tapering), apices acute to acuminate, faces ± scurfy-puberulent. <b>Peduncles</b> erect or curved-ascending, ebracteate. <b>Involucres</b> globose to fusiform in fruit, 7–16 mm. <b>Phyllaries</b>: apices erect, acute to acuminate; outer deltate, glabrous or lightly scurfy-puberulent; inner lanceolate, faces often lightly black-villous on margins (midveins often purple-lined, thickened). <b>Florets</b> 5–200; corollas yellow or white, equaling or surpassing phyllaries by 1–3 mm. <b>Cypselae</b> columnar or obconic, 3–10 mm; pappi of (0–)1–5, white to yellow, brown, or blackish, aristate scales 0.5–7 mm (± arcuate, usually distinctly involute, except <i></i>subsp.<i> tenella</i>, often abaxially villous, midveins usually tapering distally from thick bases, except <i></i>subsp.<i> tenella</i>, widths less than 1/5 bodies), aristae (white or straw-colored, ± stout) barbellate. <b>2n</b> = 18.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| − | |distribution= | + | |distribution=Calif.;Oreg.;nw Mexico. |
|discussion=<p>Subspecies 3 (3 in the flora).</p><!-- | |discussion=<p>Subspecies 3 (3 in the flora).</p><!-- | ||
| − | --><p>The geographic patterns of morphologic variability as well as both chloroplast and nuclear DNA markers in Microseris douglasii have been studied by K. Bachmann and J. Battjes (1994) and D. Roelofs and K. Bachmann (1997). Four chloroplast types were identified, two of which were derived by introgression from M. bigelovii or its ancestor. Plants in nature are highly inbred and genetically homozygous, as proposed earlier by K. L. Chambers (1955). Subspecies platycarpha stands well apart in these studies; subsp. tenella is not differentiated molecularly from subsp. douglasii.</p> | + | --><p>The geographic patterns of morphologic variability as well as both chloroplast and nuclear DNA markers in <i>Microseris douglasii</i> have been studied by K. Bachmann and J. Battjes (1994) and D. Roelofs and K. Bachmann (1997). Four chloroplast types were identified, two of which were derived by introgression from <i>M. bigelovii</i> or its ancestor. Plants in nature are highly inbred and genetically homozygous, as proposed earlier by K. L. Chambers (1955). Subspecies platycarpha stands well apart in these studies; <i></i>subsp.<i> tenella</i> is not differentiated molecularly from <i></i>subsp.<i> douglasii</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Microseris douglasii | name=Microseris douglasii | ||
| − | |||
|authority=(de Candolle) Schultz-Bipontinus | |authority=(de Candolle) Schultz-Bipontinus | ||
|rank=species | |rank=species | ||
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|basionyms=Calaïs douglasii | |basionyms=Calaïs douglasii | ||
|family=Asteraceae | |family=Asteraceae | ||
| − | |distribution= | + | |distribution=Calif.;Oreg.;nw Mexico. |
|reference=None | |reference=None | ||
|publication title=Jahresber. Pollichia | |publication title=Jahresber. Pollichia | ||
|publication year=1866 | |publication year=1866 | ||
| − | |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/V19_532.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Microseris | |genus=Microseris | ||
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| − | -->[[Category:Treatment]][[Category:Microseris]] | + | --> |
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| + | [[Category:Treatment]] | ||
| + | [[Category:Microseris]] | ||
| + | [[Category:Revised Since Print]] | ||
Latest revision as of 19:27, 6 November 2020
Annuals, 5–40 cm; taprooted. Leaves basal; petiolate; blades linear to oblanceolate, 3–25 cm, margins entire, dentate, or pinnately lobed (lobes slender, tapering), apices acute to acuminate, faces ± scurfy-puberulent. Peduncles erect or curved-ascending, ebracteate. Involucres globose to fusiform in fruit, 7–16 mm. Phyllaries: apices erect, acute to acuminate; outer deltate, glabrous or lightly scurfy-puberulent; inner lanceolate, faces often lightly black-villous on margins (midveins often purple-lined, thickened). Florets 5–200; corollas yellow or white, equaling or surpassing phyllaries by 1–3 mm. Cypselae columnar or obconic, 3–10 mm; pappi of (0–)1–5, white to yellow, brown, or blackish, aristate scales 0.5–7 mm (± arcuate, usually distinctly involute, except subsp. tenella, often abaxially villous, midveins usually tapering distally from thick bases, except subsp. tenella, widths less than 1/5 bodies), aristae (white or straw-colored, ± stout) barbellate. 2n = 18.
Distribution
Calif., Oreg., nw Mexico.
Discussion
Subspecies 3 (3 in the flora).
The geographic patterns of morphologic variability as well as both chloroplast and nuclear DNA markers in Microseris douglasii have been studied by K. Bachmann and J. Battjes (1994) and D. Roelofs and K. Bachmann (1997). Four chloroplast types were identified, two of which were derived by introgression from M. bigelovii or its ancestor. Plants in nature are highly inbred and genetically homozygous, as proposed earlier by K. L. Chambers (1955). Subspecies platycarpha stands well apart in these studies; subsp. tenella is not differentiated molecularly from subsp. douglasii.
Selected References
None.
Lower Taxa
Key
| 1 | Pappus scales usually 0.5–1 mm, sometimes nearly obsolete; cypselae truncate-fusiform, ribs constricted at apices; s, w-c California, mainly coastal and Coast Ranges | Microseris douglasii subsp. tenella |
| 1 | Pappus scales 1–7 mm; cypselae columnar or obconic, ribs slightly flared at apices | > 2 |
| 2 | Pappus scales (glabrous) 0.5 mm shorter to 2 mm longer than cypselae; cypselae obconic or columnar, 3–4.5 mm; sw California, n Baja California | Microseris douglasii subsp. platycarpha |
| 2 | Pappus scales (glabrous or villous) usually 1–6 mm shorter than cypselae; cypselae columnar (slightly tapered distally), 4–10 mm; widespread in cismontane California, mainly n of the Transverse Ranges | Microseris douglasii subsp. douglasii |