Lasthenia glabrata
Asteraceae tribe Heliantheae subtribe Baeriinae
yellow ray goldfields
erect, branched distally, glabrous or slightly hairy.
linear or subulate, 40–150 × 2–3+ mm, margins entire, faces glabrous.
basal, basal and cauline, or mostly cauline; mostly opposite (Lasthenia) or mostly alternate; usually sessile, sometimes obscurely petiolate;
blades (often 1–2 times pinnately lobed) or lobes often linear, ultimate margins entire or toothed, faces often ± woolly to tomentose, sometimes glabrate or glabrous, often gland-dotted.
hemispheric, 5–10 mm.
ovoid or obconic to campanulate or hemispheric.
± conic, papillate, glabrous or sparsely hairy.
flat, convex, hemispheric, or conic (smooth, knobby, or pitted, glabrous or hairy), usually epaleate (paleae usually 0, rare in Eriophyllum).
7–15; (corollas yellow) laminae oblong, 4–14 mm.
0 or 4–21, pistillate, fertile (3–8 peripheral florets pistillate, fertile, corollas tubular in Amblyopappus and Monolopia congdonii);
corollas yellow to orange, often darker proximally, sometimes purplish (usually ± bilabiate in Monolopia).
2–300, bisexual, fertile;
corollas yellow to orange, tubes shorter than or about equaling funnelform or campanulate throats, lobes 4–5, deltate, glabrous or papillate;
anther thecae usually pale;
stigmatic papillae in 2 lines.
10–14, ± lanceolate (distinct tips ± deltate), glabrous but for apices.
persistent, mostly 3–18 in 1–2 series, (erect or reflexed in fruit) distinct or connate, mostly elliptic, lanceolate, ovate, or obovate, usually ± equal, mostly herbaceous, sometimes indurate (at least proximally), flat or weakly cupped at bases, sometimes scarious-margined, often woolly to tomentose, sometimes glabrate or glabrous.
0.
radiate, discoid, or disciform, borne singly or in corymbiform, glomerate, or paniculiform arrays.
gray, clavate or obovoid, 2–3.5 mm, margins not ciliate, faces glabrous, or hairy and papillate (papillae rusty or yellowish, wartlike);
pappi 0.
clavate or obovoid to terete, or obpyramidal, sometimes compressed or obcompressed, glabrous, hairy, or papillate (compressed, callous-margined, and ciliolate in Eatonella, Lasthenia chrysantha, and Monolopia congdonii; sometimes winged in Monolopia);
pappi 0 or of 1–12+ aristate, erose, laciniate, or truncate scales or awns in 1–2 series (often 2 sorts of scales in combination on 1 cypsela).
appendages deltate or broadly ovate.
Lasthenia glabrata
Asteraceae tribe Heliantheae subtribe Baeriinae
Subspecies 2 (2 in the flora).
Historically, aboriginal Californians used fruits and leaves of Lasthenia glabrata for food. The subspecies are allopatric and almost identical except for their cypselae.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Genera 9, species 44 (7 genera, 41 species in the flora).
Members of Baeriinae are found mostly in western North America; there are disjuncts in western South America. H. Robinson (1981) treated Baeriinae as a relatively isolated element among epaleate subtribes of Heliantheae. B. G. Baldwin (in Baldwin et al. 2002) included Baeriinae within Madieae.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Cypselae glabrous, not papillate | subsp. glabrata |
1. Cypselae ± hairy and papillate | subsp. coulteri |
1. Leaves all or mostly opposite | Lasthenia |
1. Leaves mostly alternate (proximal sometimes opposite) | → 2 |
2. Leaves glabrous (often granular-glandular, not woolly) | Amblyopappus |
2. Leaves ± woolly or tomentose (usually stems and/or phyllaries as well) | → 3 |
3. Heads ± disciform (4–7 peripheral florets pistillate, corollas with laminae ca. 0.5 mm) | Monolopia |
3. Heads usually radiate, sometimes discoid | → 4 |
4. Phyllaries usually reflexed in fruit (ray laminae 2–2.5 mm; pappi of 2, ± lacini-ate to nearly entire, often uniaristate scales 1.5–3 mm) | Eatonella |
4. Phyllaries usually ± erect in fruit | → 5 |
5. Ray florets 7–11 (corollas obscurely bilabiate, laminae each opposed by adaxial lobe or tooth) | Monolopia |
5. Ray florets 0 or 3–13 (corollas not bilabiate) | → 6 |
6. Annuals; ray cypselae obcompressed (disc corollas with rings of hairs at bases of limbs) | Pseudobahia |
6. Annuals, perennials, subshrubs, or shrubs; ray cypselae usually prismatic, 4–5-angled (disc corollas without rings of hairs) | → 7 |
7. Annuals, perennials, subshrubs, or shrubs; phyllaries 4–13(–15) in 1+ series; pappi 0, or coroniform, or of 6–12+ (distinct) scales (in 1–2 similar or contrasting series) | Eriophyllum |
7. Subshrubs; phyllaries 8–16+ in ± 2 series; pappi of 2–6+ (unequal or 2 opposite, longer, and ± equal, basally connate, oblong to subulate) scales (tips acute to erose) | Constancea |
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