Flora of North America species comparison

erect to decumbent, sprawling, creeping, trailing, prostrate, or procumbent.

spreading, ± imbricate;

blade linear, 4–12 × 1–2 mm, margins densely glandular-serrulate, surfaces glabrous or glandular.

deciduous or persistent, usually alternate, sometimes opposite, whorled, or spirally arranged;

petiole usually present;

blade plane or acicular, abaxial groove present or absent.

corymbiform, 1–16-flowered.

axillary or terminal, fascicles, racemes, panicles, capitula, cymes, umbels, corymbs, spikes, or solitary flowers;

perulae present or absent;

bracts much shorter than sepals (sometimes absent).

10–35 mm, densely stipitate-glandular;

bracteoles 2.

often nodding;

sepals ovate to lanceolate, 3–4 mm, margins not ciliate, densely glandular abaxially;

corolla yellow or greenish yellow, urceolate, constricted at mouth, 5–8 mm, glandular, lobes reflexed, 1–2 mm;

stamens 9–10, included;

filaments 2.5–3 mm, hairy;

anthers 1–1.5 mm;

ovary ovoid, 2–2.5 mm (3.5 mm wide), glandular;

style included, 3–4.5 mm.

bisexual or unisexual, erect or pendulous, usually radially or bilaterally symmetric;

sepals (2-)4-5(-7);

petals absent or (2-)4-5(-7), connate or distinct, corolla deciduous or persistent, campanulate, salverform, rotate, saucer-shaped, funnelform, cylindric, or urceolate, (with pockets holding anthers until they open in some Kalmia), lobes shorter than tube;

intrastaminal nectary disc present;

stamens (2-)5-10;

anthers dehiscent by lateral pores or slits;

ovary (2-)5-10-locular;

placentation axile (parietal distally in Epigaea);

style straight or declinate (curved in Elliottia).

capsular, dehiscence usually septicidal, sometimes loculicidal or septifragal, or drupaceous, (dry to fleshy), indehiscent.

5-valved, globose, 2.5–4 mm, densely glandular.

2-300, distinct, obovoid, ovoid, or ellipsoid to oblong, linear, fusiform, or planoconvex, winged or not.

= 24.