Flora of North America species comparison

yellow, slender.

orange-yellow, filiform.

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.

loose, corymbiform;

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

0–2 mm.

0.5–2.5(–3) 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.

4(or 5)-merous, 0.9–1.1(–1.5) mm, fleshy, corolla lobes papillate;

calyx brownish yellow, angled, cupulate, equaling corolla tube length, divided 1/2–2/3 its length, ± reticulate, rarely shiny, lobes broadly ovate-rhombic, bases ± auriculate, overlapping, forming prominent angles at sinuses, margins entire, midvein ± carinate, apex rounded;

corolla white, drying cream to brownish, 0.9–1.2 mm, tube campanulate, 0.5–0.7 mm, not saccate, lobes reflexed, triangular-ovate, equaling corolla tube length, margins entire, apex subacute to acute, inflexed;

infrastaminal scales narrowly oblong to obovate, 0.6–0.9 mm, equaling or longer than corolla tube length, bridged at 0.2–0.3 mm, rounded, sparsely fimbriate, fimbriae 0.1–0.3 mm;

stamens exserted, slightly shorter than corolla lobes;

filaments 0.1–0.2 mm;

anthers 0.2–0.3 × 0.2–0.3 mm;

styles filiform, 0.5–0.9 mm, shorter than 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.

globose to ovoid, 1.2–2.3 × 1.2–1.6 mm, not thickened around relatively small to moderately large interstylar aperture, ± translucent, withered corolla enveloping 1/4–1/3 of base, indehiscent.

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

1 or 2, subglobose, with longitudinal groove on adaxial face, 0.9–1.1 × 0.8–1.1 mm, hilum region terminal.