Flora of North America species comparison

yellow-orange, slender to medium.

light yellow to orange, slender to medium.

dense, glomerulate;

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

loose, umbelliform;

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

0–1 mm.

(0.5–)2.5–4 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.

(4 or)5-merous, (2.8–)3–4(–5) mm, membranous, receptacle and base of perianth fleshy, not papillate;

calyx golden yellow to brownish, narrowly campanulate, equaling corolla tube length, divided 2/3 its length, reticulate and shiny, lobes lanceolate, bases overlapping, margins ± entire, midvein not carinate, apex acute to acuminate;

corolla white, drying brownish yellow, 2.8–4 mm, tube campanulate, 1.3–2 mm, not saccate, lobes reflexed, ovate to oblong, equaling or longer than corolla tube length, margins entire or irregularly denticulate, apex acute, straight;

infrastaminal scales ovate to oblong, 1.3–1.8 mm, equaling corolla tube length, bridged at 0.4–0.6 mm, truncate to rounded, margins uniformly fimbriate, fimbriae 0.1–0.2 mm;

stamens included or slightly exserted, shorter than corolla lobes;

filaments (0–)0.1–0.3 mm;

anthers 0.5–0.8 × 0.3–0.4 mm;

styles uniformly filiform, 0.5–1 mm, 1/2 to equaling 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-ovoid to ovoid, 1.4–2.1 × 1.2–2 mm, not thickened to raised around inconspicuous interstylar aperture, translucent, capped by withered corolla, indehiscent.

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

1, globose-ovoid, 0.9–1.2 × 0.8–1.08 mm, hilum region terminal, embryo base globose-enlarged.