Flora of North America species comparison

erect to spreading or ascending.

blades obovate to spatulate, 7–20 mm, sometimes 3-lobed, ultimate margins entire, plane (apices ± rounded), faces ± woolly.

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.

1–3 cm.

broadly campanulate, 4–6 mm diam.

ovoid or obconic to campanulate or hemispheric.

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

5–10;

laminae usually cream or yellow, sometimes white with red veins, 3–4 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).

20–30;

corollas 2–3 mm (tubes cylindric, throats funnelform, gradually dilated, lobes glandular; anther appendages subulate, not glandular).

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.

5–10, distinct.

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.

usually borne singly.

radiate, discoid, or disciform, borne singly or in corymbiform, glomerate, or paniculiform arrays.

± 2 mm;

pappi usually of 6–10 ± oblong scales 0.4–0.8 mm, 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).

= 10 + 0–1 I or 0–3 B.