Flora of North America species comparison

erect to decumbent, often reddish, much-branched, purple-red glandular-setose, glandular-viscid.

erect, sparsely branched, dark purple-red-glandular-setose, glandular-viscid.

opposite, petiolate proximally, sessile distally;

petiole 1–10[–22] mm;

blade ovate to lanceolate, 10–35[–50] × 3–15[–20] mm, base rounded to cuneate.

leafy.

leafy.

1–5 mm.

(1–)4–6 mm.

alternate, solitary, interpetiolar, sometimes with 1 axillary;

floral tube pale abaxially, deep purple-red adaxially, 8–12 × 1–2 mm, purple-red glandular-setose;

base rounded or a descending spur, 0.5–1 mm;

inner surface glabrous proximally, densely villous distal to stamens;

epicalyx segments thick, 2 flanking the adaxialmost sepal terminated by a bristle;

sepals unequal, adaxialmost longer;

petals 6, purple, oblanceolate, unequal, 4 abaxial petals 2–5 × 0.4–0.6 mm, 2 upper petals 3–6 × 1.5–2.5 mm;

stamens (5–)11, reaching or surpassing sinus of sepals.

alternate, solitary and interpetiolar, (with 2 or 3 axillary);

floral tube pale abaxially, purple-red to purple-black with dark veins adaxially, 5–11 × 1 mm, purple-red-glandular-setose;

base rounded [or a descending spur], to 0.5 mm;

inner surface glabrous proximally, lightly villous to glabrous distal to stamens;

epicalyx segments thick, 2 flanking the adaxialmost sepal terminated by a bristle;

sepals unequal, adaxialmost longer;

petals 6, purple or rose [bicolor, with white abaxial petals], obovate to orbiculate, unequal, 4 abaxial 0.5–1[–2.5] × 0.2 mm, 2 adaxial 1–2[–5] × 0.7 mm;

stamens 11, reaching or surpassing sinus of sepals.

7–10, oblong-elliptic in outline, 2.3–2.8 × 1.8–2.3 mm, margin rounded.

3–6 [or 7], oblong-elliptic in outline, 2–2.5 × 1.8–2 mm, margin rounded.

, petiolate;

petiole (2–)5–15(–20) mm;

blade narrowly lanceolate to narrowly ovate, 20–50 × 6–20 mm, base attenuate.

= 12.

= 20 (Mexico), 44 (Mexico).