Scabrethia
Phytologia 85: 20. 1999.
Taxon | Illustrator ⠉ | |
---|---|---|
Balsamorhiza rosea Scabrethia scabra subsp. scabra Wyethia mollis | John Myers John Myers John Myers |
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.
Distribution
w United States
Discussion
Species 1.
Selected References
None.
Lower Taxa
"broader" is not a number.