Flora of North America species comparison

spreading, reddish brown (when actively growing) or red to dark red or grayish (when dormant), much-branched, rubbery-succulent, glabrous; short shoots common;

latex watery, colorless to cloudy-whitish in fast growing shoots, blood red in basal portion of older shoots and rhizomes.

erect, green, usually sparsely branched, herbaceous, somewhat succulent, glabrous; short shoots absent;

latex watery, colorless.

deciduous, fascicled on short shoots;

stipules deciduous, linear, 1–2 mm, undivided;

petiole 0–0.2 cm, not stipitate-glandular;

blade linear-spatulate to narrowly obovate, 1.5–5(–7) × 0.2–0.7 cm, usually unlobed, sometimes shallowly, rarely deeply, 3-lobed, base attenuate, margins entire, apex rounded, membranous, surfaces glabrous;

venation pinnate (palmate if lobed).

± evenly distributed on long shoots;

stipules persistent, 4–10 mm, filiform-divided;

petiole 4.8–10.5(–13.5) cm, not stipitate-glandular;

blade cordate in outline, 11–16 × 9.3–11.2 cm, (3–)5–7(–9)-lobed to middle, base cordate, margins coarsely dentate, apex acuminate, membranous, abaxial surface glabrous, adaxial glabrous, except puberulent on veins, margins sometimes puberulent or with setae;

venation palmate.

terminal or axillary, fascicles;

peduncle absent;

bracts absent.

bisexual, terminal and subterminal, cymes;

peduncle 1.5–4.5 cm;

bracts (6–)8–16 mm, margins serrate, glabrous.

1–2.5 mm.

2.5–4 mm.

sepals distinct or connate basally, ovate to elliptic-lanceolate, 2.5–3 × 1.2–1.4 mm, margins entire, apex acute, abaxial surface hairy, adaxial glabrous;

corolla white to pinkish white, urceolate-tubular, petals connate most of length, 5–6 × 1.4–1.5 mm, abaxial surface sparsely puberulent abaxially, adaxial glabrous;

stamens 10 in 2 whorls (5 + 5);

filaments of both whorls connate from 1/5–3/4+ length, outer whorl 2–3 mm, inner whorl 3–5 mm.

sepals distinct or connate to 1/2 length, lanceolate, 5–7 × 1–2 mm, margins deeply divided, apex acuminate, surfaces glabrous;

corolla light pink, often with white striations, rotate, petals distinct or connate 1/4 length, 8–11.5 × 2.5–4.5 mm, surfaces glabrous;

stamens 8(–9) in 2 whorls (5 + 3);

filaments of outer whorl distinct, of inner whorl connate to 1/2 length, outer whorl 3.5–6 mm, inner whorl 4.5–9 mm.

resembling staminate;

carpel 1;

style 2.5–3 mm.

resembling staminate, but slightly larger;

carpels 3;

styles distinct or connate only at base, 3.5–4 mm.

ellipsoidal, 1.2–1.4 × 1.1–1.3 cm, tardily dehiscent.

± spheric, 1.2–1.3 × 1.2–1.3 cm, distinctly 3-lobed, explosively dehiscent.

solid gray-brown, spheric, 12 mm diam.;

caruncle rudimentary.

pale gray, ellipsoidal, 8–9 × 6–6.5 mm;

caruncle prominent.

= 44.

= 22.