Flora of North America species comparison

branching dichotomously, 2–5.1 × 5.1–19 cm, 0.2–0.5 times taller than long, annual growth evident, generally forming discrete rounded module;

scales usually 2-segmented but often unsegmented or 3-segmented, longest 1–2.7 cm.

to 2.8 m, strongly clonal, forming dense colonies.

± evenly distributed along stem, in 1–5 whorls or partial whorls, 3–18 leaves per whorl, usually horizontal and drooping at the tips, sometimes ± ascending, 8.2–24.5 × 0.9–5.6 cm, 3–12 times longer than wide;

blade usually elliptic, sometimes ± oblanceolate, rarely lanceolate or obovate, margins usually straight but occasionally ± undulate.

1–28-flowered.

rarely fragrant;

sepals and petals reflexed 1/4 along length from base, yellow, yellow-orange, or orange proximally, usually darker red-orange to red or sometimes pale orange on distal 1/5–1/4;

sepals (5.9–)6.6–10.4 × 1–2.1 cm;

petals 5.9–10.2 × 1.1–2.5 cm;

stamens strongly exserted;

filaments often parallel over much of length, then spreading widely, diverging 14°–22° from axis;

anthers usually purple, sometimes pale magenta or magenta, rarely yellowish, 1.1–2.2 cm;

pollen orange-brown, rust, red-orange, or deep orange;

pistil 5.6–7.5 cm;

ovary 1.4–2.2 cm;

pedicel 8.4–28 cm.

2.9–5.7 × 1.3–1.9 cm, 2–3.7 times longer than wide.

147–264.

= 24.