Flora of North America species comparison

trailing (nonflowering shoots ascending at tip), laxly branched, not bearing rosettes.

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

erect, usually simple, 5–10(–15) cm;

leaf blades triangular-ovate, base short-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.

(usually deciduous, if persistent, then blade white, soft, papery), alternate, (densely imbricate), spreading, sessile;

blade yellow-green, not glaucous, triangular-ovate, terete to semiterete (elliptic in cross section), (2–)5(–8) × 1–4 mm, base obtusely short-spurred, not scarious, apex obtuse.

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.

cymes, 2–12-flowered or flowers solitary, monochasially (1–)2(–3)-branched;

branches not recurved, rarely 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.

absent or to 1 mm.

0.5–4 mm (sometimes enlarged apically).

5-merous;

sepals erect to spreading, distinct basally, green, oblong-ovate, unequal, 2–3 × 1.3–2.3, mm, apex obtuse;

petals spreading, distinct, bright yellow, oblong-ovate to lanceolate, not carinate, 5–9 mm, apex acute to acuminate;

filaments yellow;

anthers yellow, (oblong);

nectar scales yellowish green, square.

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.

stellately patent in fruit, distinct, yellowish.

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

= 40, 60, 80, 100, 120.

= 16.