Flora of North America species comparison

yellow-orange, medium.

yellow, 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.

loose, umbelliform;

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

0–1 mm.

0.7–7 mm, papillate.

(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.

4-merous, 3.5–4.5(–5) mm, membranous, perianth papillate;

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

corolla white, drying creamy white, 3–4 mm, tube cylindric, 1.5–2.5 mm, not saccate, lobes spreading to reflexed, lanceolate, equaling corolla tube, margins entire, often involute and appearing very narrow dry, apex acute, ± cucullate;

infrastaminal scales oblong, 1.3–2.1 mm, 1/2 corolla tube length, bridged at 0.4–0.8 mm, rounded, uniformly short-fimbriate, fimbriae 0.05–0.1 mm;

stamens exserted, shorter than corolla lobes;

filaments 0.3–0.6 mm;

anthers 0.4–0.6 × 0.3–0.4 mm;

styles filiform, 1.2–2.1 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, 1.5–2 × 1.6–1.9 mm, slightly thickened and raised around inconspicuous interstylar aperture, translucent, capped by withered corolla, dehiscence circumscissile.

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

2–4, angled, subglobose to broadly ellipsoid, 0.7–0.9 × 0.7–0.8 mm, hilum subterminal.

= 60.