Flora of North America species comparison

rootstocks, decumbent and ascending, branched, (sometimes papillose), bearing terminal rosettes and above ground shoots.

erect or decumbent, simple or branched, not bearing rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

erect, simple or branched, 2.5–11 cm;

leaf blades lanceolate-elliptic or oblong, base short-spurred;

offsets not formed.

(not easily detached), alternate, spreading-erect to erect or ascending, sessile;

blade dull gray-green or bluish green, green, or reddish green, often glaucous, lanceolate, elliptic-lanceolate, or elliptic-ovate, subterete, 4.2–13 × 1.5–3.5 mm, base very short-spurred, base of withered blade at times becoming scarious, apex obtuse or obtusely apiculate, (surfaces papillose).

alternate, widely divergent, sessile;

blade pale or bluish green, not glaucous, narrowly lanceolate-elliptic or oblong, subterete to, rarely, globular, 3–6 × 1.5–2 mm, base short-spurred, not scarious, apex obtuse.

cymes, 5–25-flowered, (1–)3(–6)-branched;

branches ascending, spreading to erect, or recurved, forked;

bracts similar to leaves.

cymes, 20–60(–100)-flowered, 1–3-branched;

branches ± erect to spreading, sometimes slightly recurved, usually not forked, sometimes 1–2-forked;

bracts similar to leaves.

absent or to 3 mm.

absent or to 1 mm.

5-merous;

sepals erect, connate basally, pale green to yellow-green, ovate or lanceolate, equal, 2–5 × 1–2 mm, apex acute or, rarely, obtuse, (often papillose);

petals widely spreading from suberect base, distinct, canary to golden yellow, lanceolate, elliptic-lanceolate, or linear-lanceolate, canaliculate, 6–9.2 mm, apex acute to acuminate with minute mucronate appendage;

filaments yellow;

anthers yellow, sometimes suffused with red;

nectar scales deep yellow to yellow-green, obovately square.

5-merous;

sepals erect, distinct, yellow-green, lanceolate or lanceolate-oblong, unequal, 0.6–3 × 0.4–1.5 mm, (base short-spurred), apex acute;

petals spreading, distinct, yellow, elliptic-oblong, slightly cucullate, 2–4 mm, apex mucronate;

filaments yellow;

anthers yellow;

nectar scales yellow or translucent, stipitate-reniform, subquadrate, or obovate.

erect in fruit, basally connate, brown.

widely spreading in fruit, connate basally, straw-yellow.

= 16.

= 20.