Scabrethia

W. A. Weber

Phytologia 85: 20. 1999.

Etymology: Latin scabra, rough, and related genus Wyethia
Treatment appears in FNA Volume 21. Treatment on page 99. Mentioned on page 65, 100.
 TaxonIllustrator 
FNA21 P14 Balsamorhiza rosea.jpegBalsamorhiza 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.

... more about "Scabrethia"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
William A. Weber +
W. A. Weber +
bristlelike +
coroniform +
cuneate +
compound +  and simple +
narrowly oblong;linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
hairy +  and glabrous +
(3-)4-angled +  and prismatic +
fertile +  and bisexual +
fertile +  and bisexual +
w United States +
Latin scabra, rough, and related genus Wyethia +
glabrescent +, hispid +  and scabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
hemispheric;turbinate +
nearly +  and sessile +
opposite +  and alternate +
deltate +
2-carpellate +
persistent +
lacerate +  and coroniform +
30 +  and 45 +
unequal +  and subequal +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
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 +
Asteraceae (tribe Heliantheae) subtribe Ecliptinae +
cylindric +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
200 cm2,000 mm <br />2 m <br /> (400 cm4,000 mm <br />4 m <br />) +
shrub +  and subshrub +