Flora of North America species comparison

(28–)35–41(–53) cm × 7–14 mm, mature plants with blackish, shriveled foliage persisting at base of scape;

blade glaucous-green, aging to light green.

25–55 cm × 6–12 mm, mature plants with blackish, shriveled foliage at base of scape;

blade bluish green.

40–89 cm, often with 1–3 ascending branches, 3–5 mm thick at base.

71–99 cm, often with 2–5 ascending branches, 4–6 mm thick at base.

terminal raceme (5–)14–27(–40) cm;

flowers (24–)44–51(–78) per 10 cm of raceme.

terminal raceme (8–)12–35(–49) cm;

flowers (20–) 30–36(–46) per 10 cm of raceme.

tepals purplish black with pale green central vein, oblong-lanceolate, 9–12 × 2 mm;

stamens seldom exposed at anthesis;

filaments 5–8 mm;

anthers purple.

ellipsoid to ellipsoid-ovoid, 7–11 × 5–8 mm.

dark gray-green to black, 4–6 mm.

black, 5 mm.

ellipsoid, 26–56 × 17–31 mm, sometimes with blackish, fibrous tunic.

ellipsoid or infrequently ellipsoid-ovoid, 28–54 × 18–30 mm, usually with blackish, fibrous tunic.

= 52.