Difference between revisions of "Stephanomeria exigua subsp. exigua"
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|elevation=100–2000 m | |elevation=100–2000 m | ||
|distribution=Ariz.;Calif.;Colo.;Idaho;Nev.;N.Mex.;Oreg.;Tex.;Utah;Wash.;Mexico (Baja California). | |distribution=Ariz.;Calif.;Colo.;Idaho;Nev.;N.Mex.;Oreg.;Tex.;Utah;Wash.;Mexico (Baja California). | ||
| − | |discussion=<p>Subspecies exigua is morphologically variable. Plants with pappi of 5 bristles (often called <i>Stephanomeria</i> pentachaeta) are found throughout its distribution; they are fully interfertile with plants having more bristles. <i>Stephanomeria</i> schottii A. Gray from southern Yuma County, Arizona, described as having a pappus of 4–6 bristles, “sparsely short-plumose toward the summit,” appears to be a synonym of <i></i>subsp.<i> exigua</i>.</p> | + | |discussion=<p>Subspecies exigua is morphologically variable. Plants with pappi of 5 bristles (often called <i>Stephanomeria</i> pentachaeta) are found throughout its distribution; they are fully interfertile with plants having more bristles. <i>Stephanomeria</i> schottii A. Gray from southern Yuma County, Arizona, described as having a pappus of 4–6 bristles, “sparsely short-plumose toward the summit,” appears to be a synonym of <i></i></i>subsp.<i><i> exigua</i>.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V19_556.xml |
|tribe=Asteraceae tribe Cichorieae | |tribe=Asteraceae tribe Cichorieae | ||
|genus=Stephanomeria | |genus=Stephanomeria | ||
Revision as of 18:37, 24 September 2019
Heads in paniculiform arrays. Peduncles 10–40 mm, glabrous or sparsely glandular. Calyculi of appressed bractlets. Involucres glabrous or sparsely glandular. Florets 5–8. Cypselae 2.6–3.2 mm; pappi of 5–13 white to light tan bristles (widened bases persistent, bases connate in groups of 2–4, if bristles 5, breaking off completely, bristles plumose on distal 50%). 2n = 16.
Phenology: Flowering May–Jul.
Habitat: Sandy soils, deserts, sagebrush, creosote bush, pinyon-juniper woodlands, Joshua Tree communities
Elevation: 100–2000 m
Distribution
Ariz., Calif., Colo., Idaho, Nev., N.Mex., Oreg., Tex., Utah, Wash., Mexico (Baja California).
Discussion
Subspecies exigua is morphologically variable. Plants with pappi of 5 bristles (often called Stephanomeria pentachaeta) are found throughout its distribution; they are fully interfertile with plants having more bristles. Stephanomeria schottii A. Gray from southern Yuma County, Arizona, described as having a pappus of 4–6 bristles, “sparsely short-plumose toward the summit,” appears to be a synonym of subsp. exigua.
Selected References
None.