Flora of North America species comparison

ascending, green, sparsely to densely puberulent, sparsely glandular.

green when young, soon becoming tan to white or grayish with age (bark of older stems flaky), branched, resinous when young, less so with age.

ascending to spreading;

sessile;

blades with faint midnerves and pair of collaterals, narrowly elliptic to oblanceolate, 10–30 × 0.7–1.2 mm, flat to sulcate, apices acute (often apiculate), faces moderately puberulent, sparsely stipitate-glandular.

ascending to spreading, becoming deflexed;

sessile;

blades with conspicuous midnerves plus 1–2 pairs of collaterals often evident, lanceolate to linear-elliptic, falcate, 6–35(–60) × 1–9 mm, often folded, margins sometimes undulate, apices acute, mucronate, ± spinulose, faces glabrous, ± gland-dotted, resinous.

turbinate, 6–10 × 3–4 mm.

hemispheric, 8–12 × 9–15 mm.

2–3(–4);

corollas 5.5–8 mm, lobes 1–1.7 mm;

style branches 2–2.7(–3.4) mm (included in or barely surpassing spreading corolla lobes), appendages 0.8–1.4 mm (lengths about equaling stigmatic portion).

30–40+;

corollas 6–8.5 mm, lobes 1–1.7 mm;

style branches 2.8–3.5, appendages 1.3–1.7 mm.

(12–)14–18 in 3–4 series, ± in vertical ranks, mostly tan, sometimes green-tipped, ovate or oblong to elliptic, unequal, 2.5–7.5 × 1–1.8 mm, chartaceous, outer ± herbaceous wholly or distally, weakly keeled, midveins faint, apices acute to obtuse, faces sparsely puberulent.

40–60+ in 3–5 series, in spirals, mostly tan, ovate to lanceolate, unequal, 3–10 × 1–1.8 mm, greenish distally but scarcely herbaceous, apices acute or acuminate, often recurved, faces often glutinous.

in densely cymiform arrays, often overtopped by distal leaves.

usually in dense, cymiform arrays (to 7 cm wide), rarely borne singly, not overtopped by distal leaves.

reddish brown, turbinate, 4–6 mm, densely hairy;

pappi tan, 5–7 mm.

tan, narrowly cylindric, 4–5 mm, glabrous or sparsely hairy, resinous;

pappi of 12–15, white or stramineous, lanceolate to lance-linear scales 2–4 mm.

= 18.

= 18.