Pinaropappus roseus

(Lessing) Lessing

Syn. Gen. Compos., 143. 1832.

Common names: White dandelion or rocklettuce
Illustrated
Basionym: Achyrophorus roseus Lessing Linnaea 5: 133. 1830
Synonyms: Pinaropappus roseus var. foliosus Shinners
Treatment appears in FNA Volume 19. Treatment on page 376.

Perennials, 10–40 cm. Stems 1–20+, bases relatively thin. Leaf-blades narrowly oblanceolate, 4–12 cm × 2–15 mm; mid cauline often reduced to linear or minute bracts. Involucres campanulate, 10–15 × 12–20 mm. Phyllaries ovate to narrowly lanceolate, unequal, 2–14 mm, apices dark-brown, obtuse to acute. Paleae 12–18 mm. Florets 20–40; corollas pale-pink abaxially, white to yellow adaxially, 15–18 mm. Cypselae 5–6 mm; pappi 4–7 mm. 2n = 18.


Phenology: Flowering Mar–Aug.
Habitat: Open limestone areas, roadsides, cliffs, open grassy flats
Elevation: 50–2600 m

Distribution

V19-606-distribution-map.gif

Ariz., N.Mex., Okla., Tex., Mexico

Discussion

At flowering, phyllaries of Pinaropappus roseus are pale green with margins suffused with pink. On fresh specimens, the dark brown tips are distinctive. Specimens from the mountains of southeastern Arizona and southwestern New Mexico with stems leafy beyond the middles have been recognized as var. foliosus; that trait appears to be widespread and part of the normal range of variation for the species.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Pinaropappus roseus"
dark-brown +
obtuse;acute +
scarious +
ovate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
David J. Bogler +
(Lessing) Lessing +
linear +  and lanceolate +
decurrent +
Achyrophorus roseus +
compound +  and simple +
tuberculate +, rugose +, muricate +  and smooth +
minute +  and reduced +
filiform +
reduced to minute +  and foliaceous +
White dandelion or rocklettuce +
zygomorphic +, actinomorphic +  and (3-)5-merous +
white +  and yellow +
1.5 cm15 mm <br />0.015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
yellowish-brown +  and golden +
tapered +, fusiform +  and cylindric +
Ariz. +, N.Mex. +, Okla. +, Tex. +  and Mexico +
50–2600 m +
winged +  and beaked +
dispersed +
Open limestone areas, roadsides, cliffs, open grassy flats +
indeterminate +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
campanulate +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
oblanceolate +
cauline +  and basal +
lobed +, toothed +  and entire +
2-carpellate +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
yellowish-brown +  and tawny +
persistent +
unequal +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering Mar–Aug. +
connate +  and distinct +
18 +  and 22 +
0.2 cm2 mm <br />0.002 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Syn. Gen. Compos., +
hispidulous +  and scabrous +
5 +  and 6 +
rounded +
exalbuminous +
Illustrated +
branched +  and simple +
ascending +  and erect +
1 +  and 20 +
scapiform +
appendaged +  and truncate +
papillate +
Pinaropappus roseus var. foliosus +
Pinaropappus roseus +
Pinaropappus +
species +
rhizomatous +  and taprooted +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
shrub +  and subshrub +