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.
 TaxonIllustrator 
FNA21 P58 Psathyrotopsis scapos.jpegPsathyrotopsis scaposa
Schkuhria pinnata
Bahia absinthifolia
Linda Ann Vorobik
Bee F. Gunn
Barbara Alongi

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 glanddotted 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 lanceovate. 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

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).

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

"broader" is not a number.

... more about "Bahia"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
Lagasca +
decurrent +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
connate +  and distinct +
stipitate-glandular +  and hairy +
less hirtellous +  and more or less sericeous +
4-angled +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
sw United States +, Mexico +  and South America +
For J. F. Bahí, 1775–1841, professor of botany at Barcelona +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
campanulate +  and cylindric +
in loose , corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
hemispheric +
sessile +  and petiolate +
alternate +, all +  and opposite +
deltate +  and lanceovate +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
oblanceolate +  and ovate or quadrate +
8 +  and 18 +
Gen. Sp. Pl., +
bearing subulate enations +, hairy +  and bristly +
knobby;convex +
ellison1964a +
distinct +
4 +  and 20 +
exalbuminous +
spreading +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Bahiinae +  and Undefined (tribe Undefined) subtribe Palafoxiinae +
Asteraceae (tribe Heliantheae) subtribe Chaenactidinae +
campanulate +, cylindric +  and equaling +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
1 cm10 mm <br />0.01 m <br /> (80 cm800 mm <br />0.8 m <br />) +
entire +  and toothed +
80 cm800 mm <br />0.8 m <br /> (300 cm3,000 mm <br />3 m <br />) +
perennial +, biennial +  and annual +
10 cm100 mm <br />0.1 m <br /> (80 cm800 mm <br />0.8 m <br />) +
shrub +  and subshrub +