Flora of North America species comparison

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

erect or decumbent, branched from base, bearing shoots with rosettes axillary to proximal leaves.

erect, usually simple, 5–10(–15) cm;

leaf blades triangular-ovate, base short-spurred;

offsets not formed.

erect, simple, 6–15 cm;

leaf blades elliptic or oblanceolate-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.

(immediately deciduous), alternate, erect to spreading, sessile;

blade green or yellow-green, not glaucous, elliptic or oblanceolate-oblong, terete, 5–12 × 3–5 mm, base not spurred, not scarious, apex widely rounded, (surfaces minutely papillose marginally).

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

branches not recurved, rarely forked;

bracts similar to leaves, smaller.

cymes, 2–30-flowered, or flowers solitary, monochasially 1–2-branched;

branches erect or recurved, sometimes forked;

bracts similar to leaves, smaller.

absent or to 1 mm.

to 3.7 mm.

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.

(with pungent, musky scent unique to this species), 4–7-merous;

sepals divergent or erect, distinct, green, elliptic or lanceolate-oblong, unequal, 4–9 × 3.5 mm, apex acute to apiculate;

petals erect in proximal 1/3, curved outward sharply 2/3 from base (distal 1/3 divergent), distinct, white, oblanceolate-oblong, not carinate, 5–9 mm, apex abruptly acute with mucronate appendage;

filaments white;

anthers red or yellow;

nectar scales yellow, stipitate-reniform.

stellately patent in fruit, distinct, yellowish.

erect in fruit, connate basally, pale brown.

= 40, 60, 80, 100, 120.

= 24, 30–33, 48, 49, 61–77, 72, 96, 120, 144.