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.

spreading and arching, 50–90 × 7–12 cm;

blade green, not cross-zoned, linearlanceolate, firm, adaxially guttered, abaxially slightly convex;

margins straight, finely and sparsely fibrous, typically unarmed, teeth single prickles when present, 1–2 mm, 1–2+ cm apart;

apical spine dark brown, subulate, 2–3 cm.

5–9 m. Inflorescences 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.

2.5–3 m. Inflorescences paniculate, compact, often bulbiferous;

bracts persistent, triangular, 0.5–2 cm;

lateral branches 20–36, ascending, comprising distal 1/2–2/3 of inflorescence, longer than 10 cm.

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.

15–21 per cluster, erect, 4–6 cm;

perianth pale yellow, tube salverform, 10–12 × 14–17 mm, limb lobes erect, equal, 13–15 mm;

stamens long-exserted;

filaments inserted near top of perianth tube, erect, yellow, 3–4 cm;

anthers yellow, 13–26 mm;

ovary 1.5–2.5 cm, neck not constricted, 1–3 mm.

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

not seen.

6–8 mm.

unknown.

= 60.