Difference between revisions of "Perityle huecoensis"
Madroño 30: 219, fig. 2. 1983.
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|common_names=Hueco rock daisy | |common_names=Hueco rock daisy | ||
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| + | |code=C | ||
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name=Perityle huecoensis | name=Perityle huecoensis | ||
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|authority=A. M. Powell | |authority=A. M. Powell | ||
|rank=species | |rank=species | ||
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|publication title=Madroño | |publication title=Madroño | ||
|publication year=1983 | |publication year=1983 | ||
| − | |special status= | + | |special status=Conservation concern |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_835.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Peritylinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Peritylinae | ||
Latest revision as of 20:14, 5 November 2020
Perennials or subshrubs, 10–20 cm; densely short-hairy. Leaves: petioles 10–80 mm; blades broadly ovate, ovate-deltate, or ovate-rhombic, 5–12(–15) × 4–10(–15) mm, margins entire or serrate-lobed. Heads borne singly or in corymbiform arrays, 5.5–6 × 4–6 mm. Peduncles 5–15 mm. Involucres funnelform. Phyllaries 8–10, lanceolate to oblanceolate, 3–4.5 × 0.6–1.2 mm. Ray florets 3–5; corollas yellow, laminae oblong, 2.5–3 × 1.5–2 mm. Disc florets 11–13; corollas yellow, tubes 1.3–1.5 mm, throats broadly campanulate-funnelform, 0.8–1.2 mm, lobes 0.5–0.7 mm. Cypselae linear-lanceolate, 2.2–3.2 mm, margins usually thin-calloused, short-hairy; pappi usually of 1–3, antrorsely barbellate bristles 1–2.5 mm plus 0–4 shorter bristles, sometimes plus hyaline, laciniate scales. 2n = 34.
Phenology: Flowering spring–fall.
Habitat: Limestone cliffs
Elevation: 1400–1500 m
Distribution
Tex., Mexico (Chihuahua).
Discussion
Of conservation concern.
Perityle huecoensis is found in the United States only in the Hueco Mountains of El Paso County, generally growing on north or northeast facing slopes. Plants in the nearby Sierra Juarez in Mexico tend to lack bristles in pappi on the disc florets and to be taller with larger leaves compared to plants in the United States populations.
Selected References
None.