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desert palafox, Spanish needle

coastal plain palafox

Habit Annuals, 10–200 cm. Subshrubs or shrubs, 30–150 cm.
Stems

scabrous to nearly glabrous, sometimes distally stipitate-glandular.

strigillose to glabrate, not stipitate-glandular.

Leaf

blades lance-linear to linear, 20–120 × 2–55 mm.

blades lanceolate to linear, 25–90 × 2–13 mm.

Involucres

cylindric to narrowly turbinate.

broadly turbinate.

Ray florets

0.

0.

Disc florets

9–40;

corollas ± actinomorphic, 9–13 mm, throats ± cylindric, longer than lobes.

10–26;

corollas ± actinomorphic, 7–13 mm, throats ± funnelform, shorter than lobes.

Phyllaries

± equal, 10–25 × 1–2.5 mm, ± scabrous, sometimes stipitate-glandular.

8–11 × 1–3.5 mm, unequal, glabrous or glabrate.

Cypselae

10–16 mm;

pappus scales of inner cypselae 8–12 mm.

5–6 mm;

pappus scales of inner cypselae 4–7 mm.

2n

= 24.

= 24.

Palafoxia arida

Palafoxia integrifolia

Phenology Flowering late winter–spring(–summer). Flowering (spring–)late summer–fall.
Habitat Sandy soils Sandy soils
Elevation 30–1000 m [100–3300 ft] 0–50+ m [0–200+ ft]
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).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Distribution
from FNA
AZ; CA; NV; UT; Mexico (Baja California, Sonora)
[WildflowerSearch map]
[BONAP county map]
from FNA
FL; GA
[WildflowerSearch map]
[BONAP county map]
Parent taxa Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Palafoxia Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Palafoxia
Sibling taxa
P. callosa, P. feayi, P. hookeriana, P. integrifolia, P. reverchonii, P. riograndensis, P. rosea, P. sphacelata, P. texana
P. arida, P. callosa, P. feayi, P. hookeriana, P. reverchonii, P. riograndensis, P. rosea, P. sphacelata, P. texana
Synonyms P. arida var. gigantea Polypteris integrifolia
Name authority B. L. Turner & M. I. Morris: Madroño 23: 79. (1975) (Nuttall) Torrey & A. Gray: Fl. N. Amer. 2: 369. (1842)
Source Flora of North America vol. 21, p. 390. Flora of North America vol. 21, p. 390.
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