Flora of North America species comparison

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

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

deciduous or persistent, alternate but sometimes appearing fascicled, simple;

stipules absent or present, persistent or deciduous;

petiole absent or present, glands absent at apex, sometimes stipitate-glandular along length;

blade unlobed or palmately lobed, margins entire, serrate, or dentate, laminar glands absent;

venation pinnate or 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).

unisexual or bisexual (pistillate flowers central, staminate lateral), axillary or terminal, cymes or fascicles, or flowers solitary;

glands subtending each bract 0.

on short shoots, cymes or flowers solitary;

peduncle 0.4–0.6 cm;

bracts 0.4–1 mm, margins entire, glabrous.

present.

1–4(–6.5) mm.

sepals 5, imbricate, distinct or connate to 1/2 length;

petals 5, distinct or connate basally to most of length, white, greenish yellow, pink, red, or purple [yellow, yellow-brown, orange, or 2-colored];

nectary extrastaminal, annular and 5-lobed or of 5 glands;

stamens [6–]8 or 10 in 1–2 whorls, distinct or connate basally to most of length;

pistillode absent.

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.

sepals 5, imbricate, distinct or connate to 1/2 length;

petals 5, distinct or connate basally to most of length, white, greenish yellow, pink, red, or purple [yellow, yellow-brown, orange, or 2-colored];

nectary annular and 5-lobed or 5 glands;

staminodes sometimes present;

pistil 1–3-carpellate;

styles (1–)3, distinct or connate basally to most of length [absent], 2-fid.

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.

capsules, ± fleshy, sometimes tardily dehiscent.

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

ellipsoid to globose;

caruncle present (sometimes rudimentary) or absent.

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

caruncle absent.

= 11.

= 44 (Mexico).