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Palafoxia callosa
Torr. & A. Gray
Family:
Asteraceae
Small Palafox
[
Othake callosa
,
more
Othake callosum
,
Palafoxia callosa var. bella
(Cory) Shinners,
Polypteris callosa
A.Gray,
Stevia callosa
Nutt.
]
FNA
Resources
John L. Strother in Flora of North America (vol. 21)
Annuals,
20-60 cm.
Stems
scabrous to glabrate, not stipitate-glandular.
Leaf blades
linear, 20-70 × 1-4 mm.
Involucres
± turbinate.
Phyllaries
3-5 × 1+ mm, ± equal, ± strigillose, not stipitate-glandular.
Ray florets
0.
Disc florets
5-30; corollas actinomorphic, 5-6 mm, throats ± funnelform, shorter than lobes.
Cypselae
3-5 mm;
pappus scales
of inner cypselae 0.3-1 mm.
2
n
= 20.
Flowering summer-fall. Rocky, calcareous soils; 50-300 m; Ark., Mo., Tex.; Mexico (Coahuila).
Some depauperate specimens of
Palafoxia rosea
(e.g., Oklahoma, Beckham Co., 17 Oct 1936,
Eskero
1502,
US) closely resemble
P. callosa
.
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This project made possible by
National Science Foundation Award 1410069
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