Difference between revisions of "Gutierrezia petradoria"
Great Basin Naturalist 43: 288. 1983.
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|common_names=Goldenrod snakeweed | |common_names=Goldenrod snakeweed | ||
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|basionyms={{Treatment/ID/Basionym | |basionyms={{Treatment/ID/Basionym | ||
|name=Xanthocephalum petradoria | |name=Xanthocephalum petradoria | ||
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|publication title=Great Basin Naturalist | |publication title=Great Basin Naturalist | ||
|publication year=1983 | |publication year=1983 | ||
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| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V20_179.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Gutierrezia | |genus=Gutierrezia | ||
Revision as of 20:46, 27 May 2020
Perennials, 10–40 cm. Stems minutely scabro-hirtellous. Leaves: basal persistent at flowering; cauline blades mostly 3- or 5-nerved, linear-spatulate to linear, proximal 1–3(–4) mm wide, narrower distally. Heads borne singly or (2–4) in loose arrays. Involucres broadly turbinate to obconic, 4–7 mm diam. Phyllary apices flat, ± swollen. Ray florets (4–)5–10; corollas yellow, 5–8(–10) mm. Disc florets 15–23 (bisexual and fertile or functionally staminate). Cypselae 1.5–3(–3.5) mm, faces without oil cavities, loosely strigose (hair apices acute); pappi of 1–2 series of scales (0.5–)1–2.2 mm. 2n = 8.
Phenology: Flowering Aug–Oct(–Nov).
Habitat: Rocky ridges, crevices, and slopes, quartzite or limestone substrate, sagebrush, mountain mahogany, white fir communities
Elevation: 1800–2700 m
Discussion
Gutierrezia petradoria is distinctive, especially in its herbaceous form. The basal leaves are persistent, and the relatively large ray corollas are showy.
Selected References
None.