Bahia

Lagasca

Gen. Sp. Pl.,30. 1816

Etymology: For J. F. Bahí, 1775–1841, professor of botany at Barcelona
Treatment appears in FNA Volume 21. Treatment on page 383. Mentioned on page 364, 365, 382, 385, 393.
Annuals, biennials, or perennials, 10–80+ cm. Stems erect or spreading, branched from bases or throughout. Leaves mostly cauline; all or mostly opposite or all or mostly alternate; petiolate or sessile; blades usually 1–2-ternately lobed (blades or lobes mostly filiform, lanceolate, linar, oblanceolate, oblong, or ovate), ultimate margins toothed or entire, faces sparsely to densely hairy (hairs white, straight, conic or fusiform, 0.1–0.3 or 0.3–0.8 mm), often gland-dotted as well. Heads radiate, borne singly or in loose, corymbiform arrays. Involucres ± hemispheric or broader, 6–14+ mm diam. Phyllaries persistent, 8–18+ in ± 2 series (reflexed in fruit, distinct, subequal or outer smaller, mostly lanceolate or oblanceolate, thin-herbaceous, margins membranous, rarely purplish). Receptacles convex, smooth or knobby, epaleate. Ray florets 5–15, pistillate, fertile; corollas yellow (sometimes pale). Disc florets 25–120+, bisexual, fertile; corollas yellow (hairy), tubes shorter than or about equaling cylindric or campanulate to funnelform throats, lobes 5, deltate to lance-ovate. Cypselae obpyramidal, 4-angled, ± hirtellous to ± sericeous; pappi persistent, of 6–12 distinct, spatulate or oblanceolate to ovate or quadrate, basally and/or medially thickened, distally and/or laterally scarious scales in ± 1 series (apices usually muticous, sometimes some or all ± aristate). x = 12.

Distribution

Distribution values could not be resolved to valid regions

sw United States, Mexico, South America.

Discussion

Species ca. 10 (4 in the flora).

Bahia dissecta is treated here in Amauriopsis; B. oppositifolia and B. woodhousei are treated in Picradeniopsis; B. nudicaulis is treated in Platyschkuhria. These departures from the treatment of Bahia in a broad sense by W. L. Ellison (1964) are consistent with findings by B. G. Baldwin et al. (2002).

Lower Taxa

Key

1 Leaves all or mostly opposite (distal sometimes alternate) > 2
1 Leaves all or mostly alternate (proximal sometimes opposite) > 3
2 Annuals; leaf lobes filiform to linear, 0.5–1(–2+) mm wide, faces sparsely scabrellous; pappi 0.5–1 mm Bahia bigelovii
2 Perennials; leaf lobes lanceolate to oblong, 2–5(–20+) mm wide, faces densely scabrello-canescent; pappi 1–1.5 mm Bahia absinthifolia
3 Leaf lobes filiform to linear, 0.5–1.5(–3+) mm wide; pappus scales (outer cypselae) ± ovate to quadrate, 0.5–1 mm, apices ± muticous or (innermost cypselae) lanceolate to lance-subulate, 1–2.5 mm, apices ± aristate Bahia biternata
3 Leaf lobes oblong or ovate to oblanceolate, (1–)2–6(–8+) mm wide; pappus scales (all cypselae) spatulate to oblanceolate, 1–1.5 mm, apices ± muticous Bahia pedata
Facts about "Bahia"
AuthorJohn L. Strother +
AuthorityLagasca +
Distributionsw United States +, Mexico + and South America. +
EtymologyFor J. F. Bahí, 1775–1841, professor of botany at Barcelona +
Illustration copyrightFlora of North America Association +
IllustratorBarbara Alongi +
Publication titleGen. Sp. Pl., +
Publication year1816 +
Referenceellison1964a +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V19-20-21/V21 962.xml +
SynonymsUndefined (tribe Undefined) subtribe Bahiinae + and Undefined (tribe Undefined) subtribe Palafoxiinae +
Taxon familyAsteraceae +
Taxon nameBahia +
Taxon parentAsteraceae (tribe Heliantheae) subtribe Chaenactidinae +
Taxon rankgenus +
VolumeVolume 21 +