Flora of North America species comparison

laxly erect, decumbent, or prostrate, pubescent to subglabrous, hairs incurved.

spreading to erect, pubescent, hairs incurved and appressed.

sessile or subsessile;

blade ovate, elliptic, or obovate, 7–50(–60) × 3–20(–26) mm, base usually rounded to acute, sometimes cuneate, apex rounded to acute, surfaces pubescent, hairs incurved.

subsessile or petiolate, petiole to 3 mm;

blade ovate, lanceolate, elliptic, or linear, 5–35(–40) × 1–9 mm, base rounded to cuneate, apex acute to rounded or acuminate, surfaces subglabrous or pubescent, hairs incurved.

terminal or leaf-opposed, 1–4(–5) × 1.8–3 cm;

rachis not thorn-tipped;

peduncle 0–1 cm;

bracts early deciduous, linear to lanceolate.

terminal, usually leaf-opposed, sometimes near stem base, 0.8–5(–6) × 1–2.5 cm;

rachis not thorn-tipped;

peduncle 0–0.5 cm;

bracts persistent, elliptic, ovate, or lanceolate.

(2.5–)3.5–8.5 mm, sparsely pubescent or glabrous.

1.5–4 mm, pubescent or glabrous.

usually pink, rarely white, keel distally yellow (fading white), (2.5–)9–14.5 mm, cleistogamous and semi-cleistogamous flowers mostly 2.5–5 mm, intergrading with chasmogamous flowers;

sepals deciduous, elliptic, 4–6.5 mm, pubescent or glabrous;

wings obovate, (7.5–)8–12 × 2.5–6 mm, glabrous or sparsely pubescent;

keel (7–)8–11 mm, sac glabrous (sometimes proximally ciliate), beak oblong, (1.2–)1.6–3 × 0.7–1 mm (mostly absent in cleistogamous flowers), usually notched or contorted abaxially, rarely subentire, pubescent.

pink to cream, wings sometimes greenish, (4.4–)5–7.5 mm;

upper sepal persistent, others deciduous, ovate, lower sepals ovate to elliptic or obovate, (1.6–)1.9–4.1 mm, pubescent or glabrous;

wings obovate to elliptic, 3–7 × 1.4–3.2 mm, pubescent or glabrous;

keel 2.7–6.1 mm, sac usually glabrous, rarely sparsely incurved-pubescent distally, beak oblong or bluntly rounded, (0.2–)0.6–1.7 × 0.2–0.8 mm (rarely absent in var. tamaulipana), glabrous or pubescent.

ellipsoid to ovoid, 7.3–10.5 × 4.5–7 mm, in cleistogamous and semi-cleistogamous flowers 4.5–8 mm, base obtuse, rounded, or subtruncate, margins with narrow, entire or slightly erose wing, glabrous, margins sometimes ciliolate.

ellipsoid, sometimes broadly so, 3.7–6.2 × 2.4–4.3 mm, base subtruncate to acute, margins with very narrow wing or not winged, pubescent.

3.5–6 mm, densely pubescent;

aril 1.7–4 mm, less than 1/2 length of seed.

2.7–4.9 mm, densely pubescent;

aril 1.3–2.6 mm, lobes to 1/2 length of seed.

or semi-cleistogamous flowers often present terminally, on much reduced scale-leaved lateral branches from proximal (or distal) leaf axils, or terminally on leafy branches that are often leaf-opposed.

= 18.