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The Texas Oklahoma Regional Consortium of Herbaria
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Palafoxia riograndensis
Cory
Family:
Asteraceae
Rio Grande Palafox
Roy Morey
FNA
Resources
John L. Strother in Flora of North America (vol. 21)
Annuals,
30-60 cm.
Stems
scabrous to glabrate, not stipitate-glandular.
Leaf blades
lance-linear, 30-70 × 2-8 mm.
Involucres
± cylindric.
Phyllaries
10-15 × 1-2 mm, ± equal, ± scabrous, not stipitate-glandular.
Ray florets
0.
Disc florets
8-25; corollas zygomorphic (outer) to actinomorphic (inner), 6-9 mm, throats ± funnelform, shorter than lobes.
Cypselae
7-12 mm;
pappus scales
of inner cypselae 5-8 mm.
2
n
= 24.
Flowering (spring-)late summer-fall. Sandy or silty soils; 50-200+ m; Tex.; Mexico (Chihuahua, Coahuila).
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Roy Morey
Roy Morey
Roy Morey
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