Flora of North America species comparison

often several from base, erect to decumbent, branched or unbranched, glandular-hispid and puberulent.

erect to semi-decumbent, sparsely branched, puberulent and often sparsely red-purple glandular-setose.

opposite, sessile or subsessile;

petiole 0–1 mm;

blade ovate-lanceolate to oblong or elliptic, 5–15[–20] × 2–7[–10] mm, base cuneate to rounded.

opposite, sessile to subsessile;

petiole 0–2 mm;

blade elliptic, 15–45 × 7–25 mm, base attenuate.

leafy.

leafy.

0–3 mm.

1–2 mm.

alternate, solitary, interpetiolar;

floral tube green abaxially, purple adaxially, 5.5–8(–9) × 2–2.5 mm, sparsely glandular-hispid;

base rounded, 0.5 mm;

inner surface glabrous proximally, villous distal to stamens;

epicalyx segments thick, not terminated by a bristle;

sepals equal;

petals (2–)6, oblanceolate or oblong, unequal, 4 abaxial ones pale purple and 4–4.7 × 2.5–2.8 mm, 2 adaxial ones purple [deep purple or with deep purple midvein] and 4 × 1.5–1.9 mm;

stamens 11, reaching or surpassing sinus of sepals.

alternate, solitary, interpetiolar;

floral tube green abaxially, purple or green adaxially, 6.5–7.5 × 1 mm, puberulent and sparsely glandular-setose;

base a descending spur, 0.5 mm;

inner surface glabrous proximally, glabrous or finely puberulent distal to stamens;

epicalyx segments thick, often terminated by a bristle;

sepals equal;

petals 6, pale rose or pink, oblong, subequal, 2.5–5 × 1.5–2 mm;

stamens 11, scarcely reaching sinus of sepals.

8–13(–20), suborbiculate in outline, 1.5–2 × 1.5–1.7 mm, margin rounded.

6–13, suborbiculate to oblong in outline, 1.5–1.8 × 1.3–1.5 mm, margin narrow, flattened, thin.

= 28, 32 (Bolivia), 34 (Paraguay).

= 16 (Brazil).