Difference between revisions of "Packera quercetorum"
Kew Bull. 47: 101. 1992.
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|elevation=800–2200 m | |elevation=800–2200 m | ||
|distribution=Ariz.;N.Mex. | |distribution=Ariz.;N.Mex. | ||
| − | |discussion=<p>Packera quercetorum is found only infrequently and in relatively small populations in central and southern Arizona and west-central New Mexico. The plants are robust and have probable affinities to P. multilobata. The plants have a bluish tinge when freshly collected and are distinctive in the field.</p> | + | |discussion=<p><i>Packera quercetorum</i> is found only infrequently and in relatively small populations in central and southern Arizona and west-central New Mexico. The plants are robust and have probable affinities to <i>P. multilobata</i>. The plants have a bluish tinge when freshly collected and are distinctive in the field.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1992 | |publication year=1992 | ||
|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/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V20_1339.xml |
|tribe=Asteraceae tribe Senecioneae | |tribe=Asteraceae tribe Senecioneae | ||
|genus=Packera | |genus=Packera | ||
Revision as of 15:19, 18 September 2019
Perennials, 60–100+ cm; taprooted (caudices subligneous, ascending to erect). Stems 1 or 2–4, clustered (proximally deeply purple-tinged, distally lightly tinged), glabrous or tomentose at bases and in leaf axils. Basal leaves (and proximal cauline) petiolate; blades obovate or lyrate (pinnately lobed, lateral lobes 2–6+ pairs, their bases petioluliform, terminal lobes larger than laterals, midribs narrowly winged), 60–160+ × 20–40+ mm, bases wide, ultimate margins sharply dentate, crenate-dentate, or irregularly incised. Cauline leaves gradually reduced (petiolate or sessile; shallowly lobed, midribs ± winged, distals bractlike, dentate to incised). Heads 15–40+ in open, cymiform arrays. Peduncles ebracteate, glabrous. Calyculi inconspicuous. Phyllaries (13–)21, green (tips yellow), 5–7 mm, glabrous (tips sometimes hairy). Ray florets (8–)13; corolla laminae 6–10+ mm. Disc florets 60–70+; corolla tubes 2–3 mm, limbs 3.5–4.5 mm. Cypselae 1.5–2 mm, glabrous or ± scabrellous; pappi 5.5–6.5 mm. 2n = 92.
Phenology: Flowering mid Apr–early Jun.
Habitat: Rocky soils, open areas, scrub-oak and pinyon-pine forests, chaparral
Elevation: 800–2200 m
Discussion
Packera quercetorum is found only infrequently and in relatively small populations in central and southern Arizona and west-central New Mexico. The plants are robust and have probable affinities to P. multilobata. The plants have a bluish tinge when freshly collected and are distinctive in the field.
Selected References
None.