Difference between revisions of "Palafoxia texana"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 125. 1836.
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|accepted_name=Palafoxia texana | |accepted_name=Palafoxia texana | ||
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|title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. | |title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. | ||
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name=Palafoxia texana | name=Palafoxia texana | ||
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|rank=species | |rank=species | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Chaenactidinae | ||
Latest revision as of 20:15, 5 November 2020
Annuals or perennials (subshrubs), 20–80 cm. Stems ± scabrous, not stipitate-glandular. Leaf blades ovate-lanceolate to linear-lanceolate, 30–80 × (5–)10–20 mm. Involucres ± turbinate. Phyllaries 5–8 × 1–2.5 mm, ± equal, scabrellous, rarely stipitate-glandular. Ray florets 0. Disc florets 10–25; corollas actinomorphic, 7–10 mm, throats ± funnelform, shorter than lobes. Cypselae 4–6 mm; pappus scales of inner cypselae 2–6 mm. 2n = 22.
Phenology: Flowering spring–fall.
Habitat: Calcareous, usually rocky or gravelly soils
Elevation: 10–100+ m
Distribution
Fla., La., Tex., Mexico (Coahuila, Nuevo León, Tamaulipas).
Discussion
Plants of Palafoxia texana with non-stipitate-glandular phyllaries (versus stipitate-glandular) and pappus scales (on inner cypselae) 1–4 (versus 3–6) mm have been treated as var. ambigua. Some specimens are not readily assignable to either variety, and some are not readily assignable to either P. rosea or P. texana.
Selected References
None.