Flora of North America species comparison

basal and cauline, (marcescent, crowded);

petiole absent;

blade (sometimes reddish), linear or linear-lanceolate to narrowly elliptic, unlobed, 3–15 mm, leathery, margins entire, stiffly, often hooked, white-ciliate, sometimes also glandular-ciliate, apex acute, white spinulose-mucronate (spine 1–1.5 mm), surfaces glabrous, sometimes adaxially sparsely sessile-glandular.

basal and cauline, (basal crowded, cauline 3–5+);

petiole absent;

blade linear-oblanceolate to narrowly spatulate, unlobed, (2–)3–10(–12) mm, fleshy, margins (recurved), entire, eciliate, sometimes sparsely glandular-ciliate, apex rounded, surfaces glabrous, sometimes sparsely stipitate-glandular.

2–15-flowered cymes or thyrses, sometimes solitary flowers, 5–20 cm, sparsely short stipitate-glandular;

bracts sessile.

2(–3)-flowered cymes, sometimes solitary flowers, 2–8 cm, sparsely pink- to purple-tipped stipitate-glandular;

bracts sessile.

sepals ± erect, (purplish), ovate to triangular, margins eciliate or sparsely glandular, surfaces glabrous or sparsely sessile-glandular;

petals yellowish white, purple- or red- to yellow-spotted, oblong to elliptic, 3–7 mm, longer than sepals;

ovary superior.

sepals strongly reflexed, oblong to ovate, margins densely glandular-ciliate, sometimes eciliate, surfaces stipitate-glandular;

petals bright golden yellow, sometimes orange-tipped proximally, not spotted, elliptic-oblong to obovate, 4–8 mm, longer than sepals;

ovary superior.