Flora of North America species comparison

yellow-orange, slender to medium.

yellowish, slender.

dense, glomerulate;

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

dense, paniculiform-glomerulate;

bracts at base of clusters 1, at base of pedicels and/or flowers 0 or 1, subround to broadly ovate, membranous, margins entire, apex acute to short-acuminate, papillate.

0–1 mm.

0–1 mm.

(3 or)4-merous, 2–2.7 mm, membranous, not papillate;

calyx brownish yellow, cupulate, equaling corolla tube length, divided 1/2–2/3 its length, not reticulate or shiny, lobes triangular-ovate, bases not overlapping, margins entire, midvein not carinate, without hornlike appendages, apex obtuse to rounded;

corolla white, drying yellow-brown, 1.8–2.5 mm, tube cupulate to shallowly campanulate, 1–1.4 mm, not saccate, lobes erect, triangular, equaling or longer than corolla tube length, margins entire, apex acute, inflexed;

infrastaminal scales usually well developed, sometimes poorly developed, oblong, 0.8–1.2 mm, shorter than to equaling corolla tube length, bridged at 0.1–0.2 mm, mostly shallowly 2-fid with 1–3 fimbriae on each side of filament attachment or irregularly fimbriate at apex, fimbriae (0.05–)0.1–0.3 mm;

stamens exserted, shorter than to ± equaling corolla lobes;

filaments 0.4–0.8 mm;

anthers 0.3–0.4 × 0.2–0.3 mm;

styles subulate, 0.4–0.9 mm, shorter than ovary.

5-merous, 4.5–5 mm, membranous, calyx and corolla lobes papillate;

calyx straw yellow, campanulate, 1/2–3/4 corolla tube length, divided 2/3 its length, finely reticulate, not shiny, lobes ovate-triangular, bases overlapping, margins entire, midvein not carinate, apex acute to short-acuminate;

corolla white, drying creamy white, 3.5–4.5 mm, tube cylindric, 2.2–2.8 mm, not saccate, lobes reflexed, ovate-triangular, shorter than to equaling corolla tube length, margins entire, apex acute to short-acuminate, straight;

infrastaminal scales oblong-spatulate to obovate, 2–2.5 mm, 1/2 to equaling corolla tube length, bridged at 0.2–0.5 mm, rounded, densely fimbriate in distal 1/2, fimbriae 0.2–0.3 mm;

stamens barely exserted, shorter than corolla lobes;

filaments 0.3–0.7 mm;

anthers 0.7–1.1 × 0.2–3 mm;

styles filiform, 2.8–4 mm, longer than ovary.

depressed-globose, often appearing angled, 1.6–3 × 2.5–5 mm, not thickened or raised around relatively large interstylar aperture, not translucent, base ± enveloped by withered corolla, indehiscent.

globose to depressed-globose, 2.9–4 × 3–3.2 mm, thickened and raised around inconspicuous interstylar aperture, translucent, loosely surrounded and capped by withered corolla, dehiscence circumscissile.

3 or 4, obcompressed, subglobose or broadly ovoid to broadly ellipsoid, 1.4–1.6 × 1.2–1.3 mm, hilum region subterminal.

3 or 4, angled, broadly ellipsoid, 1–1.2 × 0.6–0.8 mm, hilum region terminal.