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 10–65(–80) mm, channeled adaxially, glabrous;

blade not or, sometimes, maculate, dull and light green to purplish abaxially, shiny and dark green, sometimes with white tissue bordering larger veins adaxially, ovate to elliptic or round to subreniform, 9–33(–45) × 10–50 mm, coriaceous, base truncate to rounded or cordate, margins subentire to crenate or crenate-serrulate, apex rounded to acute.

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

peduncular bracts present or absent;

inflorescence bracts free from pedicels.

1 per stem, 4–12-flowered;

peduncular bracts absent or 1–3, ovate-lanceolate to ovate, 6–12 × (2–)3–5 mm, chartaceous or membranous, margins entire;

inflorescence bracts ovate-lanceolate to ovate, longer than subtended pedicels, 4.5–10 × 1.8–3.4 mm, chartaceous.

pendent in fruit;

bracteoles absent.

3–8 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.

calyx lobes appressed or spreading in fruit, green, pinkish, or reddish with margins hyaline to white or pinkish, oblong-ovate to lanceolate, (2.2–)2.8–6 × (0.9–)1.2–2 mm, margins entire or erose-denticulate, apices obtuse to rounded;

petals white, often suffused with pink, obovate to round, 6–10(–11) × 4.2–6 mm, margins entire or erose-denticulate, especially distally;

stamens 4–7.5 mm;

filament base 0.2–0.3 mm wide;

anthers 1.6–3 mm, apiculations absent or less than 0.1 mm, thecae creamy yellow to golden yellow, tubules yellow to yellowish brown, 0.1–0.3 mm, scarcely narrowed above thecae, lateral walls touching for most of their lengths, pores 0.1–0.2 × 0.1–0.2 mm;

ovary smooth;

style scarcely exserted, 4.5–8 mm;

stigma 0.7–1.1 mm wide, lobes erect.

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

depressed-globose, 2.9–4 × 3.8–6 mm.

ca. 1000, fusiform, winged.

= 23.

= 46, 69.