Flora of North America species comparison

erect, spreading to ascending, occasionally reflexed, 80–200 × 15–25 cm;

blade light green to green or glaucous-gray, sometimes variegated or cross-zoned, narrowly to broadly lanceolate, smooth, rigid;

margins nearly straight or undulate to crenate, armed, teeth single, 5–10 mm, 1–4 cm apart;

apical spine dark brown to grayish, conical or subulate, 2–6 cm.

mostly spreading;

blade light to dark green, without bud-prints, linear and 40–55 × 5–6 cm or lanceolate to deltate and 35–50 × (5–)7–10(–12.5) cm, rigid, adaxially concave toward apex, abaxially convex toward base;

margins straight, nonfiliferous, conspicuously armed, teeth single, 3–10(–15) mm, 1–3 cm apart;

apical spine grayish, conical to subulate, 2.5–4.5 cm.

5–9 m.

4–6 m.

paniculate, not bulbiferous;

bracts persistent, triangular, 5–15 cm;

lateral branches 15–35, horizontal to slightly ascending, comprising distal 1/3–1/2 of inflorescence, longer than 10 cm.

subspicate to narrowly racemose-paniculate, sparsely flowered;

bracts persistent, triangular to narrowly triangular, 1–4 cm;

lateral branches 70–90+, comprising distal 1/3–1/2 of inflorescence, 10 cm or shorter.

erect, 7–10.5 cm;

perianth yellow, tube funnelform to cylindric, 8–20 × 12–20 mm, limb lobes erect, subequal, 20–35 mm;

stamens long-exserted;

filaments inserted above mid perianth tube, erect, yellow, 6–9 cm;

anthers yellow, 25–35 mm;

ovary 3–4.5 cm, neck constricted, 3–6(–8) mm.

(6–)10–12 per cluster, erect, 4–4.7 cm;

perianth yellow to yellowish lime green, tube funnelform, (3.2–)6–8 × 10–13 mm, limb lobes ascending, subequal, 16–23 mm;

stamens long-exserted;

filaments inserted on rim of perianth tube, spreading, yellow to lime green or maroon, 4–5.8 cm;

anthers yellow, 20–21 mm;

ovary 1.3–2(–2.2) cm, neck constricted, 3.5–6 mm.

short-pedicellate, oblong, 3.5–8 cm, apex beaked.

sessile or short-pedicellate, oblong, 2.5–4 cm, apex beaked.

6–8 mm.

5–6 mm.