Scabrethia scabra

(Hooker) W. A. Weber

Phytologia 85: 21. 1999.

Basionym: Wyethia scabra Hooker London J. Bot. 6: 245. 1847
Treatment appears in FNA Volume 21. Treatment on page 99.

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).



Ariz., Colo., N.Mex., Utah, Wyo.


Subspecies 3 (3 in the flora).

The subspecies of Scabrethia scabra evidently have evolved along with the dissection of the Colorado Plateau.

Selected References



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
... more about "Scabrethia scabra"
William A. Weber +
(Hooker) W. A. Weber +
Wyethia scabra +
Ariz. +, Colo. +, N.Mex. +, Utah +  and Wyo. +
Illustrated +  and Endemic +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Scabrethia scabra +
Scabrethia +
species +