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 (8–)12–40 mm, channeled adaxially, glabrous;

blade not or, rarely, obscurely maculate, dull and light green abaxially, shiny and dark green, rarely with white tissue bordering larger veins adaxially, broadly elliptic to oblong or oblong-obovate, 12–80 × (8–)11–57 mm, subcoriaceous, base decurrent or acute to rounded, margins crenulate or obscurely denticulate, apex obtuse to rounded.

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

peduncular bracts present or absent;

inflorescence bracts free from pedicels.

1(–2) per stem, 3–14(–21)-flowered;

peduncular bracts absent or 1–2(–4), subulate to linear-lanceolate or lanceolate, 3.5–10 × 0.5–1.2 mm, membranous, margins entire;

inflorescence bracts subulate to narrowly lanceolate, usually shorter than or, rarely, longer than subtended pedicels, (2–)2.5–10 × 0.3–1 mm, membranous.

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 or pinkish with margins hyaline to white, deltate to deltate-ovate, 1.2–2.1(–2.6) × 1.2–1.9(–2.3) mm, margins entire or obscurely erose-denticulate, apices acute to short-acuminate;

petals white to greenish white, obovate, 6–8.8(–10) × 3–5.4 mm, margins entire or obscurely erose-denticulate;

stamens 4–6 mm;

filament base 0.6–0.9 mm wide;

anthers 2.2–3.5 mm, apiculations 0.1–0.4 mm, thecae creamy white or tan, tubules yellowish brown, 0.3–0.6 mm, gradually narrowed from thecae, lateral walls touching for most of their lengths or connivent distally, pores 0.1–0.2 × 0.1–0.2 mm;

ovary smooth;

style exserted, 5–7 mm;

stigma 0.7–1.2(–1.5) mm wide, lobes erect.

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

depressed-globose, 3–5 × 3.7–6.6 mm.

ca. 1000, fusiform, winged.

= 23.

= 46.