Flora of North America species comparison

mostly ascending to erect, (25–)30–50 × 2–4(–5.2) cm;

blade light green to yellowish green, sometimes checkmarked but without bud-prints, linear-lanceolate, stiff, adaxially concave toward apex, abaxially convex toward base;

margins straight, easily detached, nonfiliferous, conspicuously armed, teeth single 2–6 mm, mostly (1–)2–4 cm apart, rarely absent;

apical spine grayish, conical to subulate, 1.5–4.5 cm.

ascending, 30–60(–70) × 15–27 cm;

blade glaucous-gray to gray-green, not cross-zoned, lanceolate to broadly lanceolate, rigid, adaxially concave, abaxially convex;

margins straight, armed, teeth single, well defined, (5–)7–10 mm, 1.5–2 cm apart;

apical spine dark brown to gray, subulate, 3–5(–10) cm.

(2–)2.5–3.5 m. Inflorescences spicate, densely flowered on distal 1/2;

bracts caducous, linear, 1–3 cm;

peduncle 2–5 mm, rarely 20–150 mm.

2–7 m. Inflorescences paniculate, not bulbiferous, dense;

bracts persistent, lanceolate, (3–)5–10 cm;

lateral branches 12–20, slightly ascending, comprising distal 1/2–2/3 of inflorescence, longer than 10 cm.

2–3 per cluster, erect to slightly recurved, (2.4–)3–4.5 cm;

perianth yellow, frequently tinged with red or purple, tube campanulate, 1.5–4 × 6–12 mm, limb lobes ascending, subequal, 11–20 mm;

stamens long-exserted;

filaments inserted on rim of perianth tube, spreading, yellow to reddish, 2.5–4.2 cm;

anthers pale yellow, (11–)15–20 mm;

ovary (0.8–)1.5–2.2 cm, neck constricted (2–)4–8.5 mm.

21–48 per cluster, erect, 6.8–9 cm;

perianth yellow to yellow-green, tube funnelform, 14–22 × 15–22 mm, limb lobes erect, slightly unequal, 18–24 mm;

stamens long-exserted;

filaments inserted irregularly ca. mid perianth tube, erect, yellow, 5–6.5 cm;

anthers yellow, 25–30 mm;

ovary 3–4 cm, neck constricted, 2–8 mm.

sessile or short-pedicellate, oblong, 1.8–2.5(–3) cm, apex beaked.

short-pedicellate, oblong to obovoid, 4–5.7 cm, apex beaked.

4.5–6 mm.

6–7 mm.

= 110–120.