Difference between revisions of "Scabrethia scabra"
Phytologia 85: 21. 1999.
IllustratedEndemic
Basionym: Wyethia scabra Hooker London J. Bot. 6: 245. 1847
Treatment appears in FNA Volume 21. Treatment on page 99.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
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Latest revision as of 18:25, 6 November 2020
Leaf blades mostly 8–20 cm × 5–20 (–25) mm. Phyllaries: bases ± rounded, apices acuminate or attenuate to linear or filiform. Ray laminae 15–50 mm. Cypselae 7–9 mm; pappi 0.01–0.5 mm. 2n = 38 (subspp. unknown).
Distribution
Ariz., Colo., N.Mex., Utah, Wyo.
Discussion
Subspecies 3 (3 in the flora).
The subspecies of Scabrethia scabra evidently have evolved along with the dissection of the Colorado Plateau.
Selected References
None.
Lower Taxa
Key
| 1 | Outer phyllaries: chartaceous bases ovate to oblong, 2–4(–6) mm, herbaceous tips attenuate to linear or filiform, 15–30+ mm, margins ± hispid (ciliate), faces glabrous or minutely gland-dotted | Scabrethia scabra subsp. attenuata |
| 1 | Outer phyllaries: chartaceous bases deltate to ovate, 2–5+ mm, herbaceous tips narrowly triangular to attenuate, 10–20 mm, margins (ciliolate or not) and faces minutely hispidulous to hirtellous or ± coarsely hispid | > 2 |
| 2 | Herbaceous tips of outer phyllaries usually spreading to recurved, margins (not ciliate) and faces minutely hispidulous to hirtellous | Scabrethia scabra subsp. canescens |
| 2 | Herbaceous tips of outer phyllaries usually ± erect to spreading, margins (± ciliate) and faces ± coarsely hispid | Scabrethia scabra subsp. scabra |