Flora of North America species comparison

yellow-orange, medium.

pale yellow, medium.

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.

loose, paniculiform;

bracts at bases of clusters and pedicels, and on pedicels, 2–4, ovate-orbiculate to ovate-triangular, membranous, margins ± irregularly serrulate, apex obtuse or acute to bluntly cuspidate.

0–1 mm.

2–5 mm.

(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.

5-merous, 3.5–4.2 mm, membranous, not papillate;

calyx creamy yellow, campanulate, 1/2 corolla tube length, divided to base or nearly so, finely reticulate, shiny, lobes ovate, bases overlapping, margins finely serrulate, midvein not carinate, apex acute to cuspidate;

corolla white, drying creamy white, 3.3–4 mm, tube cylindric-campanulate, 2.2–3 mm, not saccate, lobes reflexed, ovate-oblong to ovate-triangular, 1/3–1/2 corolla tube length, margins entire, apex cuspidate-acute to obtuse, straight;

infrastaminal scales oblong, rounded, 2–2.7 mm, 3/4–4/5 corolla tube length, bridged at 1–1.4 mm, ± uniformly densely fimbriate, fimbriae 0.3–0.6 mm;

stamens exserted, slightly shorter than corolla lobes;

filaments 0.6–0.9 mm;

anthers 0.6–0.8 × 0.4–0.5 mm;

styles filiform, 2–2.6 mm, longer than ovary.

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.

globose to depressed-globose, 2.5–3 × 2.8–3.2 mm, with thickened and raised ridge or collar around relatively small interstylar aperture, translucent, capped by withered corolla, indehiscent.

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

2–4, angled, subglobose to broadly ellipsoid, 1.1–1.4 × 1–1.1 mm, hilum region ± terminal.

= 60.

= 30.