Difference between revisions of "Perityle saxicola"
SouthW. Naturalist 4: 204. 1959.
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|common_names=Roosevelt Dam rock daisy | |common_names=Roosevelt Dam rock daisy | ||
| − | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=C | ||
| + | |label=Conservation concern | ||
| + | }} | ||
| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Laphamia saxicola | |name=Laphamia saxicola | ||
|authority=Eastwood | |authority=Eastwood | ||
| + | |rank=species | ||
| + | |publication_title=Proc. Calif. Acad. Sci., ser. | ||
| + | |publication_place=4, 20: 159. 1931 | ||
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name=Perityle saxicola | name=Perityle saxicola | ||
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|authority=(Eastwood) Shinners | |authority=(Eastwood) Shinners | ||
|rank=species | |rank=species | ||
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|publication title=SouthW. Naturalist | |publication title=SouthW. Naturalist | ||
|publication year=1959 | |publication year=1959 | ||
| − | |special status= | + | |special status=Endemic;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_820.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, 20–40 cm; glabrate or puberulent. Leaves: petioles 10–30 mm; blades (2–)3-pinnate, 15–55 × 10–50 mm, lobes linear to flat-filiform, scarcely broadened distally. Heads borne singly or (2–4) in loose, corymbiform arrays, 7.5–10 × 10–14 mm. Peduncles 1–3 mm. Involucres broadly campanulate to hemispheric. Phyllaries 14–25, linear-lanceolate to lanceolate, 5–7 × 0.5–1 mm. Ray florets 10–17; corollas yellow, laminae oblong to oblong-ovate, 4–6 × 2–3.2 mm. Disc florets 75–200; corollas yellow, tubes 1–1.2 mm, throats narrowly tubular to narrowly funnelform, 2–2.5 mm, lobes ca. 0.7 mm. Cypselae narrowly oblanceolate to narrowly oblong-elliptic, 2.8–3.2 mm, margins notably calloused, sparsely short-hairy; pappi 0 or of 1(–2) bristles (2–)4–5 mm. 2n = 34.
Phenology: Flowering spring–fall.
Habitat: Crevices of igneous rocks
Elevation: 700–1100 m
Discussion
Of conservation concern.
Perityle saxicola occurs in the area of Tonto National Monument and Roosevelt Dam in central Arizona. The 2–3-pinnately dissected leaves with long-linear to flat-filiform lobes distinguish it from the similar P. gilensis with its broader leaf lobes.
Selected References
None.