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, 50–80 × 6–10 cm;

blade light glaucous green to yellow green, frequently lightly cross-zoned, spatulate, firm, adaxially concave toward apex, abaxially convex toward base;

margins undulate, armed, teeth single, well defined, mostly 3–4 mm, ca. 1–2 cm apart;

apical spine dark brown to grayish, conical, 1.2–2 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.

3–4 m. Inflorescences narrowly paniculate, prolifically bulbiferous;

bracts persistent, triangular, 10–15 cm;

lateral branches 10–16, slightly ascending, comprising distal 1/4 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.

12–21 per cluster, erect, (5.1–)6–7.5 cm;

perianth cream, apex purplish or brownish, tube urceolate, 14–20 × (11–)14–19 mm, limb lobes erect, unequal, (14–)15–20 mm;

stamens long-exserted;

filaments inserted unequally at or slightly above mid perianth tube, erect, yellow, (3.3–)4.5–5 cm;

anthers yellow, (16–)22–25 mm;

ovary (1.8–)2.2–4 cm, neck slightly constricted, (0.5–)4–6 mm.

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

short-pedicellate, obovate to oblong or ovate, 5–7 cm, apex short-beaked.

4.5–6 mm.

(7–)9–11 mm.

= 110–120.

= 60.