Flora of North America species comparison

first erect (greenish proximally; usually single, simple), then producing herbaceous, leafy, prostrate runners (usually with rooting plantlets at tips, populations often becoming clonal mats), strigose (often sparsely; hairs antrorsely appressed, consistent in orientation), sometimes slightly glandular distally.

erect, villoso-hirsute (hair cross walls dark to blackish purple), minutely glandular (conspicuously so proximal to heads).

basal (often persistent) and cauline;

basal blades broadly oblanceolate to elliptic, 20–55 × 3–9 mm;

cauline abruptly reduced distally, margins entire or dentate, faces strigose, eglandular.

mostly basal (persistent) and cauline;

blades spatulate to spatulate-oblanceolate, 10–50(–80) × 2–7(–11) mm, cauline abruptly reduced distally, margins entire, faces sparsely to moderately villous (hair cross walls dark reddish or purple), sometimes sparsely minutely glandular.

3–5 × 6–13 mm.

6–9 × 10–15(–20) mm.

40–125;

corollas white, often with an abaxial midstripe, often drying lilac, 4–10 mm, laminae not coiling or reflexing.

50–100(–150);

corollas bluish purple to lavender, rarely whitish, 4–6 mm, laminae erect (filiform, 0.3–1 mm wide), not coiling or reflexing.

2–3.5 mm.

2.4–3 mm.

in 2–3 series, strigose to loosely hirsute, minutely glandular.

in (1–)2(–3) series (usually dark purple), strigoso-hirsute (hair cross walls dark reddish to blackish purple), minutely glandular.

1(–3, on proximal branches).

1.

0.8–1.3 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of 10–17 bristles.

2.2–2.5 mm, plump, 2-nerved, faces finely strigoso-hirsute;

pappi: outer of setae (inconspicuous), inner of 20–30 bristles.

or short-lived perennials, 3–15 cm; usually fibrous-rooted, sometimes taprooted, caudices lignescent, rarely branched.

= 18, 27, 36, 45, 54.

= 36.