Flora of North America species comparison

sparsely to densely eglandular-pubescent, especially on younger growth.

eglandular-pubescent to glabrate [glabrous].

opposite or subopposite, occasionally subverticillate;

petiole 1–2 mm, pubescent;

blade ovate-lanceolate to oblong-ovate, (8–)14–35 × (3.5–)6–15(–25) mm, subcoriaceous, base cuneate, rounded, or slightly cordate, margins not revolute, apex acute, acuminate, or rounded, apiculate, surfaces densely eglandular-pubescent abaxially, eglandular-pubescent adaxially.

opposite [subopposite, whorled];

petiole 3–13(–18) mm, pubescent [glabrous];

blade ovate-lanceolate to elliptic or obovate, 50–130(–150) × 15–50(–70) mm, membranous, base cuneate, obtuse, or subcordate, margins not revolute, apex acute or acuminate, surfaces eglandular-pubescent abaxially and at margins [glabrous], eglandular-pubescent to glabrate adaxially.

0–1(–3) mm, pubescent.

2–15 mm, pubescent [glabrous].

7–15 mm, pubescent.

5–20 mm, pubescent [glabrous].

sepals reddish, oblong-ovate, 4–9 × 1–2.2 mm, pubescent;

corolla white, often tinged with pink or red, often greenish below, eglandular-pubescent abaxially and adaxially, tube 13–20(–25) × 1.5 mm, throat (11–)15–20(–25) × 4–5 mm, lobes spreading, obliquely ovate, (10–)15–25 × 10–20 mm.

sepals green, lanceolate to linear-lanceolate, (3–)5–8 × 1–1.3 mm, pubescent [glabrous];

corolla yellow, glabrous abaxially, eglandular-pubescent adaxially, tube 8–12 × 2–3 mm, throat 3–5 × 3–4 mm, lobes spreading, obliquely obovate to oblanceolate to dolabriform, often falcate, 6–10 × 3–4 mm.

5–7 × 1–1.5 mm.

7–10 × 1.5–2 mm.

1(or 2)-flowered.

3–9(–14)-flowered.

55–120 × 4–5 mm, pubescent.

(55–)80–120 × 2–3 mm, pubescent or glabrate.

perennials [shrubs], 5–20 dm;

rhizomes absent.