Scabrethia scabra (Hook.) W.A.Weber

국표에 없다.

Scabrethia is a monotypic genus of North American flowering plants in the family Asteraceae.[2][3]

There is only one recognized species, Scabrethia scabra, the badlands mule-ears, which is native to the western United States (Montana, Wyoming, Colorado, Utah, Arizona, New Mexico).

Subspecies

1. Scabrethia scabra subsp. scabra - (Montana, Wyoming, Colorado, Utah, Arizona
2. Scabrethia scabra subsp. attenuata (W.A.Weber) W.A.Weber - Utah, Arizona, New Mexico
3. Scabrethia scabra subsp. canescens (W.A.Weber) W.A.Weber - Colorado, Utah, Arizona, New Mexico

The genus was circumscribed by William Alfred Weber in Phytologia vol.85 (1) on page 20 in 1998 (published in 1999).

The genus name of Scabrethia is in honour of Nathaniel Jarvis Wyeth (1802–1856), who was an American businessman and explorer. Scabrous (meaning rough to the touch) and also Wyethia.

Scabrethia - Wikipedia

274. Scabrethia W. A. Weber, Phytologia. 85: 20. 1999.

[Latin scabra, rough, and related genus Wyethia]

William A. Weber

Perennials, 20–60 cm (taproots often relatively massive; caudices unbranched or multibranched). Stems erect, seldom branched (usually white in age). Leaves mostly cauline (proximal scalelike); mostly alternate, sometimes opposite; sessile or nearly so; blades (mid and distal, usually 1 or ± 3-nerved, laterals weaker than midribs) narrowly oblong to linear, bases ± cuneate, margins entire, faces hispid to scabrous, glabrescent (then usually roughened by persistent hair bases). Heads radiate, borne singly (peduncles sometimes bracteate). Involucres hemispheric to turbinate, (13–)20–30(–40) mm diam. Phyllaries persistent, 30–45+ in 3–4+ series (subequal to unequal, outer often surpassing inner). Receptacles flat to convex, paleate (paleae conduplicate, papery). Ray florets (8–)10–18(–21), pistillate, fertile; corollas yellow. Disc florets 40–120+, bisexual, fertile; corollas yellow, tubes much shorter than cylindric throats, lobes 5, ± deltate (style branches stigmatic in 2 barely distinct lines, appendages filiform). Cypselae ± prismatic, (3–)4-angled (faces glabrous, smooth or finely honeycombed); pappi persistent, coroniform, ± lacerate. x = 19.

Species 1: w United States.

 

Lower Taxa

• Scabrethia scabra (Hooker) W. A. Weber
• Scabrethia scabra subsp. attenuata (W. A. Weber) W. A. Weber
• Scabrethia scabra subsp. canescens (W. A. Weber) W. A. Weber
• Scabrethia scabra subsp. scabra

Scabrethia in Flora of North America @ efloras.org

https://youtu.be/RYuANkJADKM

 

https://youtu.be/RYuANkJADKM