Flora of North America species comparison

yellow, slender.

orange, coarse.

loose, umbelliform;

bracts at base of clusters 1, at base of pedicels and/or flowers 0 or 1, ovate-lanceolate, membranous, margins entire, apex acute.

dense, paniculiform to glomerulate;

bracts at base of clusters 1 or 2, at base of pedicels 0 or 1, ovate, membranous, margins entire, apex acute.

0–2 mm.

0.9–2 mm.

4- or 5-merous, 2.8–3.3 mm, membranous, not papillate;

calyx slightly zygomorphic, creamy yellow, broadly campanulate, 1-1/3–1-1/2 corolla tube length, divided 1/2–3/5 its length, not reticulate or shiny, lobes ovate, bases not overlapping, margins entire, midvein not carinate, apex long-attenuate;

corolla white, drying creamy yellow, 2.6–3 mm, tube campanulate, 1.2–1.5 mm, not saccate, lobes suberect, triangular-ovate, longer than corolla tube length, margins entire, apex lance-attenuate, straight;

infrastaminal scales relatively poorly developed, oblong, 0.6–1 mm, 1/2–3/4 corolla tube length, bridged at 0.2–0.3 mm, usually reduced to denticulate wings, rarely 2-fid with 1–3 fimbriae on each side of filament attachments, 0.1–0.2 mm;

stamens included or barely visible through corolla sinuses, shorter than corolla lobes;

filaments 0.2–0.5 mm;

anthers 0.2–0.4 × 0.2–0.3 mm;

styles terete to slightly subulate, 0.3–0.7 mm, 1/4 ovary length.

5-merous, 4–6(–7) mm, membranous, not papillate;

calyx yellow-brown, cupulate, 1/3–1/2 corolla tube length, divided 3/5–2/3 its length, not reticulate or shiny, lobes triangular-ovate to broadly ovate, bases overlapping, margins entire, midvein not carinate, apex obtuse;

corolla white, drying creamy yellow to brownish, 3.8–5.8 mm, tube campanulate, 3–5 mm, not saccate, lobes suberect to spreading or reflexed, ovate, 1/4–1/3 corolla tube length, margins entire, apex rounded, straight;

infrastaminal scales oblong to obovate, 1.5–2.8 mm, 1/2–2/3 corolla tube length, bridged at 0.5–0.7 mm, rounded, sparsely fimbriate at base, more dense in distal 1/2, fimbriae 0.3–0.9 mm;

stamens exserted, shorter than to equaling corolla lobes;

filaments 0.5–0.7 mm;

anthers 0.6–0.8 × 0.4–0.5 mm;

styles filiform, 1–1.5 mm, equaling ovary.

ellipsoid-ovoid, ovoid-conic, or globose to depressed-globose, 2–3.2 × 2–3.6 mm, not thickened or raised around relatively small interstylar aperture, translucent, proximal 1/2 surrounded by withered corolla, indehiscent.

broadly ovoid, 4–7 × 4–5.5 mm, with stout beak 1–1.5 mm, raised and thickened around relatively small interstylar aperture, not translucent, surrounded by withered corolla, indehiscent.

2–4, obcompressed, subglobose, 0.8–1.1 × 0.8–1 mm, hilum subterminal.

2–4, obcompressed to obscurely angled, ovoid to oblong, 1.7–2.5 × 1.3–1.6 mm, hilum region subterminal.