Flora of North America species comparison

yellow-orange, medium.

yellowish, slender.

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.

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

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

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

= 60.