Flora of North America species comparison

all in basal rosettes, living at anthesis, 10–25 cm;

petiole narrowly winged distally, 0.1–9 cm, shorter than blade;

blade oblong-spatulate, obovate, or elliptic, 4–16 × 1.5–6.5 cm, leathery, base gradually tapered, margins entire, apex rounded or retuse, often short-cuspidate, cusp less than 1 mm;

main lateral veins ascending, obscurely pinnate.

all in basal rosettes, living at anthesis, 10–30 × 1–6 cm;

petiole often very narrowly winged, 0.1–12 cm, usually shorter than blade;

blade spatulate to oblanceolate or obovate, 7–20 × 1–6 cm, leathery, base gradually tapered and long-decurrent, margins entire to undulate, apex obtuse or rounded, sometimes retuse, rarely cuspidate, if so, cusp less than 0.5 mm;

main lateral veins strongly ascending, obscurely pinnate.

axes not winged, 30–60(–100) cm × 2–3 mm, glabrous; nonflowering branchlets absent;

spikelets densely aggregated at tips of branchlets, internodes 0.5–3 mm; subtending bracts 1–5 mm, apex obtuse, surfaces and margins glabrous;

flowers 1–3 per spikelet.

axes not winged, 15–60 cm × 2–5 mm, glabrous; nonflowering branches absent;

spikelets moderately to densely aggregated, internodes 1–2 mm; subtending bracts 3–6 mm, apex usually acute or apiculate, surfaces and margins glabrous;

flowers 1–2 per spikelet.

calyx whitish distally, with reddish brown ribs, obconic to slightly funnelform, 3.5–5 mm, ribs usually densely pubescent;

tube ca. 3 mm;

lobes spreading at maturity, 0.5–1.5 × 1–1.5 mm;

petals blue to nearly white, not exceeding calyx.

calyx whitish distally, with brownish ribs, obconic, ribs glabrous or pilose;

tube 4–6 mm;

lobes erect at maturity, triangular, ca. 1 mm;

petals lavender to whitish, only slightly exceeding calyx.

2.5–3 mm.

not seen.

= 18.