Flora of North America species comparison

erect, glabrous.

essentially basal or, sometimes, highly reduced or absent (P. chlorantha, P. picta), alternate;

petiole present;

blade maculate or not, elliptic, ovate-elliptic, oblong-elliptic, oblanceolate, oblong-obovate, ovate, obovate, spatulate, subreniform, reniform, or round, subcoriaceous to coriaceous, margins entire, denticulate, crenulate, crenate, or crenate-serrulate, plane or revolute, surfaces glabrous.

petiole 2–32 mm, channeled adaxially, glabrous;

blade not maculate, dull and light green abaxially, dull to shiny and green to dark green adaxially, oblong-elliptic, ovate, obovate, or round, (5–)20–30(–42) × (7–)14–27 mm, subcoriaceous, base rounded to subcordate, margins crenulate to crenulate-serrulate, apex obtuse or rounded.

racemes, usually erect in flower and fruit, (symmetric);

peduncular bracts present or absent;

inflorescence bracts free from pedicels.

1 per stem, 3–11(–17)-flowered;

peduncular bracts absent or 1–2, lanceolate to ovate or obovate, 4–6.5 × 0.7–2 mm, chartaceous or membranous, margins entire or obscurely erose-denticulate;

inflorescence bracts lanceolate to ovate-lanceolate, equaling or longer than subtended pedicels, (3–)4–5(–7.3) × 0.5–1.4 mm, chartaceous.

pendent in fruit;

bracteoles absent.

2.5–4.5 mm.

radially symmetric (bilaterally symmetric in P. minor), spreading or nodding;

sepals 5, connate proximally, often obscurely so, calyx lobes lanceolate, ovate, triangular, deltate, oblong, or obovate;

petals 5, distinct, white, greenish white, yellowish white, pink, or purplish red, without basal tubercles, corolla crateriform to broadly campanulate;

intrastaminal nectary disc absent;

stamens 10, exserted;

filaments broad proximally, gradually narrowed medially, slender distally, glabrous;

anthers oblong, without awns, with or without tubules, dehiscent by 2 round to elliptic or obovate pores;

pistil 5-carpellate;

ovary imperfectly 5-locular;

placentation intruded-parietal;

style (exserted or included), bent downward or straight (P. minor), expanded distally;

stigma 5-lobed, without subtending ring of hairs.

radially symmetric;

calyx lobes appressed or spreading in fruit, green or pink with margins hyaline to white or pinkish, deltate, 1.3–1.8 × 1.3–1.8 mm, margins entire or erose-denticulate, especially distally, apices acute to obtuse or, rarely, acuminate;

petals white or pink, obovate to broadly elliptic, (3–)3.3–5 × 2.6–3.8 mm, margins entire;

stamens 2.2–3.5 mm;

filament base 0.1–0.4 mm wide;

anthers 0.8–1.4 mm, apiculations absent or less than 0.1 mm, thecae creamy white to greenish white, often yellowish brown distally, tubules absent, pores 0.1–0.3 × 0.05–0.1 mm;

ovary smooth;

style included, straight, (0.5–)0.8–1.5(–1.8) mm;

stigma 0.9–1.3 mm wide, lobes spreading.

capsular, pendulous, dehiscence loculicidal, cobwebby tissue exposed by splitting valves at dehiscence.

depressed-globose, 3–4 × 4.5–5.4 mm.

ca. 1000, fusiform, winged.

= 23.

= 46.