Flora of North America species comparison

sympodial, cylindrical, units 30–40 cm × 8–14 mm, sometimes multiplied, roots scattered.

sympodial, proliferatively branching, units 8–20 cm × 1–1.5 mm, roots restricted to nodes.

erect or arching, 7.5–12.5 dm × 7–9 mm.

erect, 1.5–3.5 dm × 2–4 mm.

7–12, sessile and clasping, or petiolate;

blade elliptic to ovate, 9–17 × 5–8 cm;

base rounded or tapered;

apex acute or caudate.

solitary on sterile shoots, 2–3 on fertile shoots, petiolate;

blade cordate, 6–10 × 5–8 cm;

base lobed, with deep sinus;

apex sharply acute;

proximal leaves short-petiolate, blade triangular to cordate, petiole 4–7 cm;

distal leaves petiolate, blade deeply cordate, petiole 7–10 cm.

paniculate, 70–250-flowered, branches well developed, pyramidal.

racemose, complex, 15–40-flowered.

3-merous;

tepals inconspicuous, 0.5–1 × 0.5 mm;

filaments 1 × 0.5 mm;

anthers 0.5–1 mm;

ovary globose, 1 mm wide;

style 0.1–0.3 mm;

stigma obscure;

pedicel 0.5–1 × 0.5 mm.

(1–)3(–4) per node, 2-merous;

tepals conspicuous, 2–3.2 × 1.5 mm;

filaments 1.5 mm;

anthers 0.2–0.4 mm;

ovary globose, 0.8–1 mm wide;

style 0.4–0.5 mm;

stigma distinctly 2-lobed;

pedicel 3–5 × 0.2–0.4 mm.

green with copper spots when young, maturing to deep translucent red, globose or 3-lobed, 4–6 mm wide.

green mottled with red when young, maturing to deep translucent red, globose, 4–6 mm diam.

1–4, globose, 2.5–4 mm.

1–2, globose, 2–3 mm.

= 36, 72, 144.

= 36.