Flora of North America species comparison

many-branched from base, leafy, (10–)15–25(–38) cm.

erect, green or flushed with red on proximal parts, sometimes inflorescence axis red, usually withside branches obliquely arising from rosette and secondary branches from main stem, 50–150 cm.

cauline, (0.3–)0.6–1.5(–2.5) × (0.05–)0.15–0.4(–0.6) cm, fascicles of small leaves 0.2–0.6 cm often present in non-flowering axils;

petiole 0–0.1 cm;

blade lanceolate to linear, base cuneate, apex acute.

in a basal rosette and cauline, basal 13–30 × 3–5 cm, cauline 5–15 × 2.5–4 cm;

blade dark to bright green, white- or red-veined, narrowly oblanceolate to oblanceolate, sometimes narrowly elliptic to lanceolate distally, margins usually conspicuously crinkled, sometimes undulate, bluntly dentate, teeth widely spaced, sometimes sinuate-dentate proximally or lobed;

bracts persistent.

erect, unbranched.

several opening per day near sunset;

buds usually without free tips, rarely free tips 0.2–0.3 mm;

sepals (7–)8–12 mm;

petals pink, rarely white, streaked or flecked with red, fading bright purple, (8–)10–17 mm;

filaments 6–8 mm, anthers often with red longitudinal stripe, 3–6 mm;

style (16–)22–27 mm, stigma exserted beyond anthers at anthesis.

opening near sunset;

buds erect, 7–9 mm diam., with free tips terminal, erect to spreading, 5–8 mm;

floral tube 35–50 mm;

sepals yellowish green, usually flushed with red or red-striped, sometimes very dark red throughout, 28–45 mm;

petals yellow to pale yellow, fading yellowish white and somewhat translucent, very broadly obcordate, 35–50 mm;

filaments 17–25 mm, anthers 10–12 mm, pollen ca. 50% fertile;

style 50–80 mm, stigma exserted beyond anthers at anthesis.

woody, ovoid, narrowly winged, wings 0.8–1.5 mm wide, (7–)9–12(–14) × 2–4 mm (excluding wings), abruptly constricted to a conspicuous, sterile beak, (2–)3–4.5 mm, indehiscent;

sessile.

erect or slightly spreading, dull green when dry, lanceoloid, 20–35 × 5–6 mm, free tips of valves 0.8–1.5 mm.

asymmetrically cuneiform or oblanceoloid, 1.2–1.5 × 0.4–0.5 mm.

1.3–2 ×1–1.5 mm, ca. 50% abortive.

= 14.

= 14.