Flora of North America species comparison

several from base, erect to decumbent, (unbranched, stout, densely leafy sterile shoots sometimes present), (0.5–)4–2.5 dm.

few from base, decumbent, (arising laterally proximal to current season’s leaves), 0.3–0.8 dm.

(clustered at stem base);

blade linear to linear-oblanceolate, 2–5 cm, margins entire, usually involute, sometimes flattened, (apex obtuse to subacute).

(petiole slender);

blade broadly obovate, or deltate to ovate or narrower, 1.5–3.5 cm, (base abruptly to gradually narrowed to petiole), margins entire or obscurely few-toothed, (apex usually obtuse, nearly acute in narrower leaves).

blade linear-oblanceolate to linear, 1–3.5(–4.5) cm, margins entire, usually involute.

(2–5 per stem);

blade oblanceolate to spatulate, similar to basal, margins entire, (apex acute).

compact, (often nearly subumbellate).

loose, (3–6-flowered).

sepals (yellowish or greenish yellow), ovate or oblong, 4.5–7.5(–9) mm, (lateral pair sometimes cucullate, median pair tapering at both ends, thickened apically, cucullate);

petals spatulate or oblong, 6.5–10.5(–15) mm, (base sometimes widened, apex rounded or retuse).

sepals narrowly oblong to linear, 7–9 mm;

petals (erect), spatulate, 10–12(–15) mm.

(often expanded distally, ascending or recurved, usually straight or slightly curved, rarely nearly sigmoid), 4–15 mm, (stout).

(widely spreading to ascending, slightly curved or straight), 7–11 mm.

(sessile or substipitate), subglobose to slightly ovoid, usually inflated, rarely compressed or obcompressed, 4–6(–10) mm, (apex acute, slightly flattened);

valves sparsely pubescent, trichomes appressed;

ovules (8–)12–16(–20) per ovary;

style (2–)3–4.5(–5.5) mm.

(usually purplish in age), didymous, irregular and somewhat angular, not highly inflated, 4–11 × 10–13 mm, (coriaceous, papery, shallowly grooved distally and on sides, tapered and narrowed toward replum, base obtuse to truncate, apex with broad sinus to nearly truncate);

valves (retaining seeds after dehiscence), densely pubescent, not silvery;

replum elliptic to obovate, as wide as or wider than fruit, base rounded, margins sparsely pubescent or glabrous, apex rounded (with funicles);

ovules 4 per ovary;

style 5–7 mm, (glabrous).

flattened.

flattened.

= 18, 20, 36.