Flora of North America species comparison

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

rootstocks, horizontal, branched, bearing terminal rosettes.

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

(terminal or axillary), ascending, simple or branched, 2–10(–12) cm;

leaf blades truncately obovate or spatulate, base not 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, ascending, sessile;

blade green, blue-green, green suffused with red, or red, margins not white, not pruinose, not glaucous, obovate, spatulate, or oblanceolate, subterete to somewhat flattened, (4–)12–22(–33) × 4–10 mm, base not spurred, not scarious, apex rounded or truncate, obscurely mucronate, retuse, or emarginate.

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

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

bracts similar to leaves.

paniculate cymes, 5–45-flowered, 4–15-branched;

branches not recurved, simple or 1–2-forked;

bracts spatulate to linear-oblong, 3–5 mm, base not spurred;

offsets not formed.

absent or to 3 mm.

2–5 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.

ca. 5-merous;

sepals erect, (loosely appressed to corolla), slightly connate basally, pale green or purplish, glaucous, ovate or lanceolate, (slightly subterete), equal, 1.8–5.3(–6) × 2 mm, apex acute to obtuse;

petals (convolute in bud), erect proximally, connate basally, spreading distally, greenish white or creamy white to yellow or pale orange, or pale orange suffused with pink, oblanceolate-oblong, spatulate or obovate, somewhat carinate, 4–10 mm, apex abruptly mucronate;

filaments white or yellow;

anthers yellow;

nectar scales white, truncately reniform.

erect in fruit, basally connate, brown.

erect in fruit, distinct, brown.

= 16.

= 30, 60 (in var. retusum).