Flora of North America species comparison

1(–5), twining, 100–300 cm, hirsute with eglandular and inconspicuous glandular trichomes.

1–10, twining, 10–150 cm, retrorse-puberulent with curved, eglandular trichomes and inconspicuously glandular-hirtellous to glabrate.

with 2 colleters on each side of petiole;

petiole 1–7 cm, hirsute with eglandular and inconspicuous glandular trichomes;

blade ovate to oblong or elliptic (lanceolate, orbiculate), 3.5–15 × 2–13 cm, base shallowly to deeply cordate, with 2–4 laminar colleters, apex acute to acuminate, surfaces hirsute with eglandular and inconspicuous glandular trichomes.

with 0–2 colleters on each side of petiole;

petiole 0.2–1 cm, sparsely puberulent with curved, eglandular trichomes and inconspicuously glandular-hirsutulous;

blade deltate to lanceolate or ovate, 0.5–2.5 × 0.2–1.3 cm, base shallowly to deeply cordate, with 2–4 laminar colleters, apex acute, surfaces sparsely puberulent with curved, eglandular trichomes and inconspicuously glandular-hirtellous (mostly on veins) to glabrate.

solitary or paired, umbelliform (rarely compound), extra-axillary, pedunculate, 5–15(–20)-flowered;

peduncle 1–9 cm, hirsute with eglandular and inconspicuous glandular trichomes.

solitary, umbelliform, extra-axillary, sessile or subsessile, 1–4-flowered.

5–40 mm, hirsute with eglandular and inconspicuous glandular trichomes.

1–5 mm, puberulent with curved, eglandular trichomes and inconspicuously glandular-hirtellous.

calyx lobes spreading, elliptic to ovate (narrowly deltate), 2–4.5 mm, apex acute to acuminate, hirsute with eglandular and inconspicuous glandular trichomes;

corolla pale maroon to yellowish green tinged with maroon abaxially, pink, reddish, or maroon (green, cream, or orange), with a cream to rose ring at base of corona adaxially (ring sometimes absent), not reticulate, rotate-campanulate to campanulate, tube 0.5–1.5 mm, lobes erect to spreading, twisted (coiled), oblong to linear, 8–16 mm, margins reflexed to plane, minutely hirtellous with glandular and eglandular trichomes abaxially, glabrous adaxially;

corona united to column near base, nearly circular, of 5 united, very fleshy segments, each with 2 lateral lobes at apex equaling or exceeding medial lobe, forming a sheath that equals style apex, adaxial appendages incurved, incumbent on anthers, sometimes concealed when corolla lobes erect, cream to rose to maroon, 1–2 mm, 5 mm diam., glabrous;

apical anther appendages bright white with maroon patch at base, truncate;

style apex cream to rose to maroon, pentagonal, flat.

calyx lobes ascending, linear to linear-lanceolate, 2–3 mm, apex acute, sparsely puberulent with curved, eglandular trichomes and inconspicuously glandular-hirtellous to glabrate;

corolla green to yellow-green, not or very faintly reticulate, campanulate, tube 0.5–1 mm, lobes ascending, linear, 5–10 mm, apex often twisted, glabrous;

corona cup-shaped, apex undulate, with 5 paler appendages opposite anthers, exceeded by style apex, green, cream, or yellowish, 0.5–0.7 mm, glabrous;

apical anther appendages white, deltoid;

style apex yellow, pentagonal-lobed, flat to broadly convex.

brown, ovate (orbicular), 7–9 × 4–6 mm, margins broadly winged, chalazal end entire, faces rugose;

coma 2.5–3.5 cm.

tan, ovate, 5–7 × 4–5 mm, margins winged, chalazal end minutely erose, faces rugulose;

coma 2–3 cm.

, herbaceous.

, suffrutescent, not corky.

not striate, lance-ovoid, 10–15 × 1.5–3 cm, apex acuminate, moderately muricate, sparsely and minutely hirsute.

gray to maroon or purplish striate, lance-ovoid, 6–7 × 1–2 cm, apex acuminate, smooth to very sparsely tuberculate, mostly on lower half, minutely puberulent to glabrate.