Flora of North America species comparison

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

latex watery, colorless.

spreading, yellow to yellow-brown [gray], much-branched, woody-succulent, glabrous; short shoots common;

latex watery, yellow in young shoots, red in older shoots.

± 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.

deciduous, usually fascicled on short shoots;

stipules absent;

petiole 0(–0.2) cm, not stipitate-glandular;

blade obovate-spatulate, 0.7–1.9 × 0.3–0.9 cm, unlobed (shallowly 3-lobed on active shoots), base attenuate, margins entire, apex usually rounded, sometimes emarginate, coriaceous, surfaces glabrous;

venation pinnate (palmate if lobed).

bisexual, terminal and subterminal, cymes;

peduncle 1.5–4.5 cm;

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

on short shoots, cymes or flowers solitary;

peduncle 0.4–0.6 cm;

bracts 0.4–1 mm, margins entire, glabrous.

2.5–4 mm.

1–4(–6.5) 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.

sepals connate basally, ovate-lanceolate, 2.5–4 × 0.6–1 mm, margins entire, apex acute, surfaces glabrous;

corolla white, tubular-urceolate, petals connate most of length, 4–6 × 1.3–2 mm, surfaces glabrous;

stamens 10 in 2 whorls (5 + 5);

filaments of both whorls connate almost to top, outer whorl 1–2.5 mm, inner series 2.5–4 mm.

resembling staminate, but slightly larger;

carpels 3;

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

resembling staminate, but sepals distinct, 1.5–3 × 0.5–1 mm;

petals 4–4.5 × 1–1.5 mm;

carpel 1;

styles 0.5–1 mm.

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

spheric, 0.9–1.1 × 0.9–1.1 cm, tardily dehiscent.

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

caruncle prominent.

solid dark to golden brown, spheric, 10 × 10 mm;

caruncle absent.

= 22.

= 44 (Mexico).