Flora of North America species comparison

yellow to orange, slender to medium.

orange-yellow, slender.

dense, corymbiform to glomerulate;

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

dense, corymbiform to glomerulate;

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

0.5–3(–4.5) mm.

0.4–1.3 mm.

(4 or)5-merous, 1.4–2.5 mm, membranous, corolla lobes sometimes papillate;

calyx yellow to brown, angled, cupulate, equaling corolla tube length, divided 1/2–2/3 its length, ± reticulate, shiny or not, lobes broadly ovate to rhombic, base auriculate, overlapping, forming prominent angles at sinuses, margins entire, midvein not carinate, without multicellular protuberances, apex rounded;

corolla whitish, drying yellow to brown, 1.2–2.2 mm, tube campanulate, 0.7–1.2 mm, not saccate, lobes spreading, triangular-lanceolate, equaling corolla tube length, margins entire, apex acute to acuminate, inflexed;

infrastaminal scales ovate to oblong, 0.7–1.4 mm, equaling or longer than corolla tube length, bridged at 0.3–0.5 mm, rounded, ± uniformly densely fimbriate, 0.15–0.25 mm;

stamens exserted, shorter than corolla lobes;

filaments 0.3–0.4 mm;

anthers 0.2–0.3 × 0.2–0.3 mm;

styles filiform, 0.7–1.1 mm, equaling ovary.

5-merous, 2–2.6 mm, membranous, not papillate;

calyx straw yellow, cupulate, equaling corolla tube length, divided 2/3 its length, finely reticulate, shiny, lobes ovate, bases not overlapping, margins entire, midvein with multicellular protuberances, apex acute;

corolla white, drying creamy, 1.5–2.1 mm, tube cylindro-campanulate, becoming globose, 0.8–1.2 mm, not saccate, lobes erect to spreading, ovate-triangular, shorter than to equaling corolla tube length, margins usually entire, sometimes irregularly toothed, apex acute, straight to slightly incurved;

infrastaminal scales oblong or rounded, 0.9–1.3 mm, equaling or slightly longer than corolla tube length, bridged at 0.1–0.2 mm, uniformly fimbriate in distal 1/2, fimbriae 0.1–0.3 mm;

stamens exserted, shorter than corolla lobes;

filaments 0.3–0.6 mm;

anthers 0.2–0.3 × 0.2–0.3 mm;

styles filiform, 0.4–0.7 mm, shorter than to equaling ovary.

depressed-globose to ovoid, 1.9–2.4 × 1.6–2.5 mm, not thickened or raised around relatively medium-sized to large interstylar aperture, translucent or not, base ± enveloped by withered corolla, indehiscent.

depressed-globose, 1.5–2.5 × 1–1.8 mm, not thickened or raised around relatively small interstylar aperture, translucent, loosely surrounded or capped by withered corolla, dehiscence circumscissile.

4, angled, subglobose to broadly ellipsoid, 0.9–1.1 × 0.8–1 mm, hilum region subterminal.

3 or 4, angled, broadly ellipsoid to subglobose, 0.8–1 × 0.7–0.9 mm, hilum region almost terminal.

= 56.