Flora of North America species comparison

yellow to orange, medium.

yellow-orange, medium.

dense, corymbiform or glomerulate;

bracts at base of clusters 1, at base of pedicels 0 or 1, ovate or ovate-triangular to lanceolate, membranous, margins entire, apex acute.

dense to loose, spiciform or paniculiform, commonly originating endogenously;

bracts at base of clusters 1 or 2, at base of pedicels and/or flowers 0 or 1, ovate, membranous, margins entire or serrulate, apex obtuse to acute.

0.3–2.5(–3.5) mm.

0–1 mm.

(4 or)5-merous, 1.9–3.6 mm, membranous, not papillate;

calyx yellow, cupulate, equaling corolla tube length, divided 2/5–3/5 its length, reticulate, shiny, lobes ovate-triangular, bases overlapping, margins entire, midvein not carinate, without multicellular protuberances, apex obtuse to rounded;

corolla creamy white, drying creamy or golden yellow, 2–3.5 mm, tube campanulate, (1.1–)1.5–1.9 mm, not saccate, lobes spreading, triangular to triangular-lanceolate, equaling corolla tube length, margins entire, apex acute to acuminate, inflexed;

infrastaminal scales oblong-ovate to spatulate, rounded, 1.5–2 mm, equaling or exceeding corolla tube length, bridged at 0.3–0.5 mm, uniformly densely fimbriate, fimbriae 0.3–0.4(–0.5) mm;

stamens exserted, shorter than corolla lobes;

filaments 0.4–0.7 mm;

anthers (0.3–)0.4–0.5 × 0.2–0.3 mm;

styles filiform, 0.5–1.6 mm, shorter than to equaling ovary.

(3 or)4(or 5)-merous, 2–3 mm, membranous, not papillate;

calyx yellow-brown, shallowly cupulate, 1/2 corolla tube length, divided 2/3 its length, not reticulate, not shiny, lobes oblong-ovate, bases slightly overlapping, margins entire or serrulate, midvein not carinate, apex obtuse;

corolla white, drying creamy white, 1.8–2.8 mm, tube cylindric-campanulate to cylindric, 1.1–2.2 mm, not saccate, lobes spreading, ovate, 1/3–1/2 corolla tube length, margins entire, apex obtuse, straight;

infrastaminal scales oblong, rounded, 0.9–1.7 mm, shorter than to equaling corolla tube length, bridged at 0.2–0.4 mm, sparsely fimbriate, more densely distally, fimbriae 0.1–0.3 mm;

stamens included to slightly exserted, equaling corolla lobes;

filaments 0.2–0.4 mm;

anthers 0.2–0.4 × 0.2–0.4 mm;

styles filiform or narrowly terete, (0.6–)1–2 mm, equaling or longer than ovary.

depressed-globose to depressed, 1.3–2.8 × 1.9–3.8 mm, not thickened or raised around relatively large interstylar aperture, sometimes translucent, to 1/3 enveloped by withered corolla, indehiscent.

depressed-globose to globose, 2.5–3.2(–4) × 2–4 mm, not thickened or raised around relatively small interstylar aperture, not translucent, capped by withered corolla, indehiscent.

4, angled, subglobose to broadly ellipsoid, 1.1–1.5 × 0.9–1.1 mm, hilum region subterminal.

1 or 2, obcompressed, broadly ovoid, 1.4–2 × 1.3–1.4 mm, hilum region terminal.

= 56.

= 60.