Flora of North America species comparison

erect.

blades 7–110 × 3–70(–80) mm.

cauline; opposite; petiolate;

blades (3-nerved) lanceolate to broadly ovate, margins entire or serrulate to serrate, faces glabrate to densely pilose.

1–40 mm.

campanulate, 2.5–5 mm diam.

hemispheric to campanulate, 2.5–6 mm diam.

conic, paleate (paleae persistent or falling, scarious, proximal broadly elliptic to obovate, often connate at bases or nearly to apices, united in groups of 2–3 to adjacent proximal phyllary, each complex often enclosing and shed with a ray cypsela; distal persistent or falling, lanceolate to obovate, entire or 2- or 3-lobed, convex to conduplicate).

(3–)5(–8);

corollas usually dull white (pink), laminae 0.5–1.8 × 0.7–1.5 mm.

[0–](3–)5(–8)[–15], pistillate, fertile;

corollas white or dull white to pinkish [purplish] (tubes pilose, laminae quadrate-obovate to oblong, lobes 0–3).

15–50.

5–50[–150], bisexual, fertile;

corollas yellow, tubes (pilose) shorter than cylindric throats, lobes 5, deltate (anthers yellow; style-branch apices acute).

persistent.

persistent or falling, 6–9[–16] in 2[–3] series (elliptic, lance-ovate, oblong, or ovate, outer shorter, herbaceous or scarious, margins entire or minutely laciniate).

radiate or discoid, in ± cymiform arrays.

rays 1.5–2.5 mm;

discs 1.3–2.5 mm, glabrous or strigose;

pappi: rays 0 or of 5–10, laciniate scales 0.5–1 mm;

discs 0, or of 15–20 white or gray, linear, fimbriate, obtuse (acute) scales 0.5–2 mm.

obconic to obpyramidal, glabrous or strigose (rays often shed with subtending phyllary plus 2–3 adjacent paleae);

pappi 0, or persistent, of 5–20, white or gray, fimbriate, sometimes aristate scales.

outer persistent with distal phyllaries or falling, elliptic to obovate;

inner usually persistent, lanceolate to ovate or obovate, 2–3.5 mm, 3-lobed, lobes to 1/3+ total lengths, acute.

= 8.