Flora of North America species comparison

usually prostrate or decumbent, rarely erect, branched proximally, glabrous or hairy at nodes and distally.

linear to oblanceolate, 10–90 × 2–12 mm, (fleshy) margins entire or lobed, 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, 4–7 mm.

ovoid or obconic to campanulate or hemispheric.

conic, muricate, glabrous.

flat, convex, hemispheric, or conic (smooth, knobby, or pitted, glabrous or hairy), usually epaleate (paleae usually 0, rare in Eriophyllum).

7–12; (corollas light to golden yellow) laminae oblong, 1–3 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.

6–14, lanceolate to ovate, hairy (especially at margins and midribs).

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, linear to narrowly clavate, (2–)2.5–3 mm, ± hairy;

pappi usually of 4–6(–12) brown, lanceolate or subulate, aristate scales plus 4–5+ shorter, laciniate scales, rarely 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 ± oblong, obtuse (style apices ± deltate, glabrous or with apical tufts of hairs and subapical fringes of shorter hairs).

= 8.