Difference between revisions of "Psathyrotopsis"
in N. L. Britton et al., N. Amer. Fl. 34: 360. 1927.
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|discussion=<p>Species 3 (1 in the flora).</p> | |discussion=<p>Species 3 (1 in the flora).</p> | ||
|tables= | |tables= | ||
| − | |references= | + | |references={{Treatment/Reference |
| + | |id=strother1975a | ||
| + | |text=Strother, J. L. and G. E. Pilz. 1975. Taxonomy of Psathyrotes (Compositae: Senecioneae). Madroño 23: 24–40. | ||
| + | }} | ||
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|illustration copyright=Flora of North America Association | |illustration copyright=Flora of North America Association | ||
|distribution=sw United States;Mexico. | |distribution=sw United States;Mexico. | ||
| − | |reference= | + | |reference=strother1975a |
|publication title=in N. L. Britton et al., N. Amer. Fl. | |publication title=in N. L. Britton et al., N. Amer. Fl. | ||
|publication year=1927 | |publication year=1927 | ||
|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/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V19-20-21/V21_957.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Revision as of 20:41, 16 December 2019
Perennials, 8–40 cm (sometimes functionally annual; caudices often ± woody). Stems 1–3+ (scapiform), erect, branched from bases or throughout. Leaves mostly basal; alternate; petiolate; blades rounded-deltate, lanceolate, or rhombic, margins crenate, serrate, or subentire, faces ± tomentose and stipitate-glandular. Heads discoid, borne singly or in corymbiform arrays. Involucres campanulate to hemispheric, 4–6(–10) mm diam. Phyllaries persistent, 8–21 in 2–3 series (lanceolate to linear, subequal, sparsely tomentulose and stipitate-glandular). Receptacles flat, obscurely pitted or knobby, epaleate. Ray florets 0. Disc florets 16–50, bisexual, fertile; corollas ochroleucous to bright yellow, (cylindro-funnelform) tubes much shorter than throats, lobes 5, (erect or spreading) deltate (style-branch appendages subulate to conic, shaggy-papillate). Cypselae narrowly obconic; pappi persistent, of 70–90 unequal bristles in 2–3 series. x = 19.
Distribution
sw United States, Mexico.
Discussion
Species 3 (1 in the flora).