Flora of North America species comparison

erect, green or red on proximal parts or throughout, mostly branched from base or only in distal 1/2, 30–150 cm.

densely leafy, 4–20 cm.

in a basal rosette and cauline, basal 10–30 × 1–4 cm, cauline 4–18 × 1–3 cm;

blade usually bright green, sometimes pale green distally, white- or red-veined, narrowly oblanceolate, narrowly elliptic to lanceolate, or oblong, margins usually flat, rarely undulate, regularly dentate to remotely denticulate, sometimes teeth widely spaced;

bracts persistent.

in a basal rosette, sometimes also cauline, 5–16 × (0.2–)0.3–0.5(–0.7) cm;

petiole 0.6–3.5 cm;

blade linear to narrowly lanceolate, margins entire or sometimes proximal 1/2 of blade remotely lobed, apex long-attenuate, acute to rounded.

erect or ± curved, unbranched or with secondary branches just proximal to main one.

opening near sunset;

buds erect, 3–5 mm diam., with free tips subterminal, spreading to erect, 0.5–5 mm;

floral tube 22–40 mm;

sepals green to yellowish green or flushed with red or dark red, sometimes only red-flecked, 7–17 mm;

petals yellow to pale yellow, fading pale yellow to pale yellowish orange, very broadly obcordate, 8–15(–20) mm;

filaments 7–13 mm, anthers 3.5–6 mm, pollen ca. 50% fertile;

style 25–50 mm, stigma surrounded by anthers at anthesis.

usually 1–3, rarely more, opening per day near sunset, weakly scented;

buds with unequal free tips 0.7–1.2 mm;

floral tube (55–)75–100(–125) mm;

sepals 34–40 mm;

petals lemon-yellow, fading orange, drying lavender to purple, broadly obovate, 35–43 mm, sometimes with terminal tooth;

filaments 17–25 mm, anthers 14–17 mm;

style (85–)105–135(–143) mm, stigma exserted beyond anthers at anthesis.

erect or slightly spreading, usually greenish black when dry, narrowly lanceoloid to lanceoloid, 20–40 ×3.5–5 mm, free tips of valves 1–1.5 mm.

leathery, lanceoloid to ovoid, winged, wings 4–6 mm wide, body 25–30 × 8 mm, dehiscent 1/4–1/3 their length;

pedicel 1–2(–3) mm.

1.1–1.8 × 0.5–1 mm.

numerous, usually in 2 distinct rows per locule, often reduced to 1 row near apex, rarely 1 row throughout, obovoid to subcuboid, 2.5–4 × 2.5–3.5 mm.

= 14.

= 42.