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pink palafoxia, rosy palafox

Rio Grande palafox

Habit Annuals, 10–50 cm. Annuals, 30–60 cm.
Stems

scabrous to glabrate, not stipitate-glandular.

scabrous to glabrate, not stipitate-glandular.

Leaf

blades linear-lanceolate, 30–60 × 2–6(–10) mm.

blades lance-linear, 30–70 × 2–8 mm.

Involucres

± turbinate.

± cylindric.

Ray florets

0.

0.

Disc florets

5–30;

corollas actinomorphic, 7–10 mm, throats ± funnelform, shorter than lobes.

8–25;

corollas zygomorphic (outer) to actinomorphic (inner), 6–9 mm, throats ± funnelform, shorter than lobes.

Phyllaries

5–10 × 1–2.5 mm, ± equal, usually scabrellous and stipitate-glandular.

10–15 × 1–2 mm, ± equal, ± scabrous, not stipitate-glandular.

Cypselae

5–8 mm;

pappus scales of inner cypselae (1.5–)3–8 mm.

7–12 mm;

pappus scales of inner cypselae 5–8 mm.

2n

= 20.

= 24.

Palafoxia rosea

Palafoxia riograndensis

Phenology Flowering spring–fall. Flowering (spring–)late summer–fall.
Habitat Sandy soils Sandy or silty soils
Elevation 100–1500 m (300–4900 ft) 50–200+ m (200–700+ ft)
Distribution
from FNA
CO; KS; NM; OK; TX; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
TX; Mexico (Chihuahua, Coahuila)
[BONAP county map]
Discussion

Plants of Palafoxia rosea with phyllaries 7–10 (versus 5–7) mm and pappus scales 3–8 (versus 1–3) mm have been treated as var. macrolepis. Some specimens are not readily assignable to either variety, and some are not readily assignable to either P. rosea or P. texana. Other specimens referred here to P. rosea closely resemble P. callosa.

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

Source FNA vol. 21, p. 391. FNA vol. 21, p. 390.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Palafoxia Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Palafoxia
Sibling taxa
P. arida, P. callosa, P. feayi, P. hookeriana, P. integrifolia, P. reverchonii, P. riograndensis, P. sphacelata, P. texana
P. arida, P. callosa, P. feayi, P. hookeriana, P. integrifolia, P. reverchonii, P. rosea, P. sphacelata, P. texana
Synonyms Othake roseum, P. rosea var. macrolepis
Name authority (Bush) Cory: Rhodora 48: 86. (1946) Cory: Rhodora 48: 84. (1946)
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