(A. Gray) Rydberg

in N. L. Britton et al., N. Amer. Fl. 34: 83. 1915.

Common names: Sunburst
Etymology: Greek pseudes, false, and generic name Bahia
Basionym: Monolopia sect. Pseudobahia A. Gray in W. H. Brewer et al., Bot. California 1: 383. 1876 (as Pseudo-Bahia)
Treatment appears in FNA Volume 21. Treatment on page 351. Mentioned on page 336, 353, 363, 380.

Annuals, to 30(–70) cm. Stems erect, usually branched. Leaves cauline; mostly alternate; usually petiolate; blades usually 1–2-pinnately lobed, sometimes 3-lobed or entire, faces sparsely to moderately woolly. Heads radiate, borne singly. Involucres hemispheric, 5–9 mm diam. Phyllaries persistent, (3–)8 in 1 series (± erect in fruit, connate at bases or to 1/2 their lengths, elliptic, lanceolate, or oblanceolate, equal, margins somewhat hyaline, apices acute to acuminate, abaxial faces usually woolly). Receptacles conic to hemispheric, pitted or smooth, glabrous, epaleate. Ray florets (3–)8, pistillate, fertile; corollas yellow (with rings of hairs at bases of laminae). Disc florets 8–25+, bisexual, fertile; corollas yellow (with rings of hairs at bases of limbs), tubes shorter than funnelform or cylindric throats, lobes 5, ± deltate (anther appendages deltate, widest at bases, glandular; style-branch appendages deltate). Cypselae ± obcompressed, 3–4-angled and obpyramidal to clavate, hairy or glabrate; pappi 0, or coroniform (minute scales). x = 4.


Species 3 (3 in the flora).

B. G. Baldwin and B. L. Wessa (2000) found that Pseudobahia bahiifolia and P. peirsonii nest within a clade of Eriophyllum and Syntrichopappus species; circumscriptions of these genera are likely to change.

Selected References



1 Leaves entire or 3-lobed Pseudobahia bahiifolia
1 Leaves mostly 1–2-pinnately lobed > 2
2 Leaves mostly 1-pinnately lobed; phyllaries connate to 1/2 their lengths Pseudobahia heermannii
2 Leaves mostly 2-pinnately lobed (except in smaller plants); phyllaries connate at bases Pseudobahia peirsonii
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