Palafoxia rosea |
Palafoxia riograndensis |
|
---|---|---|
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 |
CO; KS; NM; OK; TX; WY
|
TX; Mexico (Chihuahua, Coahuila) |
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 | ||
Synonyms | Othake roseum, P. rosea var. macrolepis | |
Name authority | (Bush) Cory: Rhodora 48: 86. (1946) | Cory: Rhodora 48: 84. (1946) |
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