Flora of North America species comparison

rhizomes, horizontal, much-branched, bearing rosettes.

decumbent, becoming erect or ascending, branched, not bearing true rosettes.

erect, simple, (6–)10–28 cm;

leaf blades suborbiculate or obovate, base not spurred;

offsets not formed.

erect, usually simple, rarely branched, 6–10 cm;

leaf blades suborbiculate to spatulate-obovate or oblong, base not spurred;

offsets not formed.

alternate, ascending to spreading, sessile to subsessile;

blade green, glaucous, not strongly pruinose, obovate or oblanceolate, subterete, 10–36 × 5–16 mm, base not spurred, not scarious, apex emarginate to retuse.

opposite and decussate (rarely alternate), spreading, sessile;

blade green or reddish green, not glaucous, suborbiculate to spatulate-obovate or oblong, subterete, ± globular, 4–9 × 4–6 mm, base slightly subcordate, (clasping), not scarious, apex rounded.

panicles, 10–120-flowered, 3–20-branched;

branches not recurved, dichotomously forked;

bracts similar to leaves, smaller.

terminal cymes, 5–25-flowered, 2–3-branched;

branches recurved to erect, forked or not;

bracts similar to leaves or elliptic to broadly lanceolate, 2–5 mm, base clasping, apex obtuse to acute.

2–5 mm.

0.5–4 mm (sometimes enlarged apically).

5-merous;

sepals (persistent, closely appressed to corolla tube), erect, connate basally, greenish, ovate, equal, 3.2–3.5 × 1–3 mm, apex subacute;

petals (persistent until fruiting), erect basally, divergent apically, connate basally, creamy white, yellowish white, or pale yellow, elliptic-oblong or oblanceolate-oblong, cucullate, 5–9(–11.5) mm, apex abruptly pointed;

filaments pale yellow;

anthers yellow;

nectar scales white or yellow, subreniform.

5(–7)-merous;

sepals erect, connate basally, green, ovate, equal, 2–3 × 1.5–2 mm, apex obtuse;

petals erect basally, spreading distally, usually distinct, sometimes slightly connate basally, yellow, elliptic-lanceolate, not or only slightly carinate, ca. 6 mm, apex acute or obtuse with mucronate appendage;

filaments yellow;

anthers yellow;

nectar scales yellow, subquadrate.

erect in fruit, distinct, brown, (strongly 5-veined).

widely spreading in fruit, firmly connate basally, red to light reddish brown or straw colored.

= 90.

= 16.