Flora of North America species comparison

erect, hirsute and stipitate-glandular, becoming glabrate.

erect, pubescent.

persistent or drought-deciduous;

petiole 0.5–2.5 cm;

blade ovate to cordate, 1–5 × 0.5–4 cm, base truncate to rounded or cordate, margins serrate-crenate, apex acute or obtuse.

petiole 1–4 cm;

blade ovate-lanceolate, 2–5 × 0.7–2.7 cm, base rounded (sometimes asymmetric), margins crenate to serrate, apex acute.

unisexual and bisexual, axillary and terminal; staminate peduncle 0.3–2.5 cm, fertile portion 1–4 cm; pistillate peduncle 0.4–3 cm, fertile portion 1–3 × 0.8–1.2 cm;

bisexual similar to staminate, with 1–3 pistillate bracts near base;

allomorphic pistillate flowers absent.

unisexual, axillary (staminate) and terminal (pistillate; sometimes on short lateral branches, appearing axillary); staminate peduncle 0.1–0.3 cm, fertile portion 0.1–0.6 cm; pistillate peduncle 0.1–0.2 cm, fertile portion 2–5(–7) × 1.5–2.5 cm;

allomorphic pistillate flowers common, near apices of pistillate inflorescences.

of allomorphic flowers rudimentary.

pistil 3-carpellate;

styles multifid or laciniate.

pistil 3-carpellate (normal flowers), 2-carpellate (allomorphic flowers);

styles multifid or laciniate.

smooth, pubescent and stipitate-glandular.

smooth, pubescent;

allomorphic fruits obovoid, longitudinally 2-ridged near apex, 1.4–1.6 × 1–1.2 mm, muricate, pubescent.

1.5–2 mm, minutely pitted.

1.2–1.5 mm, coarsely pitted.

bracts loosely arranged (inflorescence axis visible between bracts), 3–6 × 5.5–11 mm, abaxial surface pubescent, sessile- and stipitate-glandular;

lobes (8–)10–18, rounded, 1/5 bract length.

bracts (normal and allomorphic flowers) crowded (inflorescence axis not or sparingly visible between bracts), 12–15 × 7–10 mm, abaxial surface pubescent and stipitate-glandular;

lobes (5–)9–13(–17), deltate to triangular, 1/8–1/4 bract length, except terminal lobe to 1/3 bract length.

= 20.