Palafoxia arida

B. L. Turner & M. I. Morris

Madroño 23: 79. 1975.

Synonyms: Palafoxia arida var. gigantea (M. E. Jones) B. L. Turner & M. I. Morris
Treatment appears in FNA Volume 21. Treatment on page 390. Mentioned on page 389.

Annuals, 10–200 cm. Stems scabrous to nearly glabrous, sometimes distally stipitate-glandular. Leaf-blades lance-linear to linear, 20–120 × 2–55 mm. Involucres cylindric to narrowly turbinate. Phyllaries ± equal, 10–25 × 1–2.5 mm, ± scabrous, sometimes stipitate-glandular. Ray-florets 0. Disc-florets 9–40; corollas ± actinomorphic, 9–13 mm, throats ± cylindric, longer than lobes. Cypselae 10–16 mm; pappus-scales of inner cypselae 8–12 mm. 2n = 24.


Phenology: Flowering late winter–spring(–summer).
Habitat: Sandy soils
Elevation: 30–1000 m

Distribution

V21-981-distribution-map.gif

Ariz., Calif., Nev., Utah, Mexico (Baja California), Mexico (Sonora)

Discussion

Plants of Palafoxia arida 90–150 cm with phyllaries 16–25 mm (from dunes west of Yuma, Arizona) have been treated as var. gigantea. Plants referable to P. arida have been named P. linearis (Cavanilles) Lagasca (including var. gigantea M. E. Jones) in other floras; P. linearis is a Mexican species (see B. L. Turner and M. I. Morris 1976).

Selected References

None.

Lower Taxa

None.
... more about "Palafoxia arida"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, cymiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
B. L. Turner & M. I. Morris +
decurrent +
compound +  and simple +
broadly lanceolate;linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
connate +  and distinct +
actinomorphic +
pinkish +  and purplish or whitish +
stipitate-glandular +  and hairy +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
4-angled +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Calif. +, Nev. +, Utah +, Mexico (Baja California) +  and Mexico (Sonora) +
30–1000 m +
appressed-puberulent +  and strigillose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
Sandy soils +
disciform +  and discoid +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
cylindric;narrowly turbinate +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
sessile +  and petiolate +
alternate +  and opposite +
linear +  and lance-linear +
deltate +  and linear +
2-carpellate +
persistent +
spatulate +  and subulate +
thickened +  and callous-thickened +
Flowering late winter–spring(–summer). +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
stipitate-glandular +
8 +  and 14 +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
bearing subulate enations +, hairy +  and bristly +
distinct +
4 +  and 20 +
exalbuminous +
stipitate-glandular +, scabrous +  and nearly glabrous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Palafoxia arida var. gigantea +
Palafoxia arida +
Palafoxia +
species +
cylindric +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
much longer than short +
toothed +  and entire +
80 cm800 mm <br />0.8 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (200 cm2,000 mm <br />2 m <br />) +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
shrub +  and subshrub +