Flora of North America species comparison

erect to decumbent and spreading, usually much-branched, hispid and setose, sometimes also puberulent.

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

opposite, subsessile or sessile;

petiole 0–2 mm;

blade broadly elliptic to lanceolate, 12–55 × 5–25 mm, base attenuate.

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.

leafy.

leafy.

1–2 mm.

0–3 mm.

alternate, 1 interpetiolar, with 1–3 flowers on axillary branchlets;

floral tube purple adaxially and distally, or green throughout, 4–6 × 1–1.5 mm, glabrous except veins sparsely and coarsely setose;

base rounded or a descending spur, 0.5 mm;

inner surface glabrous;

epicalyx segments thick, often terminated by a bristle;

sepals equal;

petals 6, deep purple or rose purple, subspatulate, subequal, 1.5–2.5 × 0.5–1 mm;

stamens 11, extending 2/3 distance to sinus of sepals.

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.

(4–)6(–9), elliptic to suborbiculate in outline, 1.5–1.7 × 0.2–1.5 mm, margin narrow, flattened, thin.

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

= 16.

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