Pyrrhopappus rothrockii

A. Gray

Proc. Amer. Acad. Arts 11: 80. 1876.

Treatment appears in FNA Volume 19. Treatment on page 377. Mentioned on page 378.

Perennials (possibly flowering first-year), 15–40 cm. Stems seldom, if ever, scapiform, branching from bases and/or distally, glabrous or pilosulous proximally. Cauline leaves (1–) 3–9+, proximal mostly spatulate or oblanceolate to linear, margins entire, dentate, or pinnately lobed, distal usually narrowly lanceolate to lance-attenuate, margins usually entire or with 1–2 lobes near bases, sometimes pinnately 3–5 (–7+) -lobed. Heads (1–) 3–5+ in loose, corymbiform arrays. Calyculi: bractlets 3–5+ in 1–2 series, deltate to subulate, 2–5 mm. Involucres ± cylindric, 12–15 (–20+) mm. Phyllaries 13–16+. Florets (20–) 30–60+; anthers 3.5–4 mm (pollen equatorial diameters unknown). Cypselae: bodies stramineous, 3–4 mm, beaks 6–7 mm; pappi 6–7 mm. 2n = 12.


Phenology: Flowering May–Sep.
Habitat: Meadows, stream banks, flood plains
Elevation: 1100–2700 m

Discussion

For the present, I concur with D. K. Northington (1974) and I treat Pyrrhopappus rothrockii as distinct from P. pauciflorus.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Pyrrhopappus rothrockii"
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
scarious +
ovate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
A. Gray +
decurrent +
filiform +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
compound +  and simple +
ovate;lanceolate or linear +
stramineous +
tuberculate +, rugose +, muricate +  and smooth +
fusiform +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
deltate;subulate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
filiform +
rufous +  and stramineous +
subequal +
3 (?) +  and 9 (?) +
zygomorphic +, actinomorphic +  and (3-)5-merous +
yellow +  and whitish +
reddish-brown +  and stramineous +
tapered +, beaked +, flattened +, obcompressed +, compressed +, prismatic +, fusiform +, ellipsoid +, columnar +  and clavate +
usually narrowly lanceolate +  and lance-attenuate +
Ariz. +, N.Mex. +  and Tex. +
1100–2700 m +
rugulose +
winged +  and beaked +
dispersed +
Meadows, stream banks, flood plains +
in loose , corymbiform arrays +  and singly +
indeterminate +
each +  and sessile +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
with 1-2 lobes +  and entire +
3-5(-7+)-lobed +, lobed +  and dentate +
2-carpellate +
persistent +
coroniform +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering May–Sep. +
connate +  and distinct +
13 +  and 16 +
subequal +  and unequal +
Proc. Amer. Acad. Arts +
exalbuminous +
pilosulous +  and glabrous +
2 +  and 5 +
scapiform +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Pyrrhopappus rothrockii +
Pyrrhopappus +
species +
rhizomatous +  and taprooted +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
shrub +  and subshrub +