Flora of North America species comparison

yellow to orange, slender to medium.

orange, slender.

loose to dense, paniculiform or corymbiform, sometimes originating endogenously;

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

dense, umbelliform to subglomerulate;

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

0.5–6 mm, usually papillate.

0.5–2 mm, sometimes with domelike cells.

5-merous, 3–4.5(–5.3) mm, fleshy, perianth cells convex, domelike, perianth and ovary usually papillate;

calyx creamy yellow to brownish, cupulate, 1/2–3/4 or longer than corolla tube length, divided 1/3–2/3 its length, not reticulate or shiny, lobes triangular-ovate to lanceolate, bases overlapping or not, margins entire, midvein not carinate, apex acute to attenuate;

corolla white, drying creamy yellow to dark brown, 2.5–4(–5) mm, tube campanulate to campanulate-cylindric, becoming subglobose or urceolate, 1.7–3 mm, not saccate, lobes suberect to erect, triangular-ovate, 1/3 to equaling corolla tube length, margins entire, apex acute, inflexed;

infrastaminal scales subspatulate to spatulate, 1.7–3 mm, equaling corolla tube length, bridged at 0.3–0.9 mm, usually rounded, rarely truncate or 2 or 3(or 4)-lobed, uniformly densely fimbriate, fimbriae 0.4–0.7 mm;

stamens barely exserted or included, shorter than corolla lobes;

filaments 0.3–0.7 mm;

anthers 0.3–0.8 × 0.2–0.5 mm;

styles filiform, 1–2.5 mm, equaling ovary.

5-merous, 3.5–6 mm, membranous, papillate or corolla lobes, sometimes calyx, with domelike cells;

calyx creamy yellow, usually drying dull brown, rarely drying yellow, campanulate to cupulate, equaling corolla tube length, divided 2/3 its length, not reticulate or shiny, lobes ovate-triangular, bases slightly overlapping, margins entire, midvein not carinate, apex acute to acuminate;

corolla white, generally drying dark brown (rarely creamy yellow), 2.8–5.4 mm, tube campanulate, 1.5–2.6 mm, not saccate, lobes erect to spreading, broadly ovate to rhombic-ovate, equaling corolla tube length, bases overlapping, margins entire or irregular, apex usually acute to cuspidate, sometimes appearing tridentate, straight;

infrastaminal scales oblong to slightly obovate, 1–1.5 mm, 1/2–3/4 corolla tube length, bridged at 0.3–0.5 mm, with few short fimbriae 0.05–0.1 mm;

stamens included in completely open flower, shorter than corolla lobes;

filaments 0.3–0.6 mm;

anthers 0.3–0.6 × 0.3–0.5 mm;

styles filiform, 0.4–0.9 mm, shorter than ovary.

globose to subglobose, 2–3.5 × 1.9–4(–5) mm, thickened and raised around relatively mid-sized interstylar aperture, translucent, surrounded or capped by withered corolla, indehiscent.

ovoid, 2–3.6 × 1.4–2.1 mm, thickened around relatively small interstylar aperture, not translucent, surrounded by withered corolla, indehiscent.

2–4, shape heterogeneous on same plant: obcompressed to weakly angled, broadly ellipsoid to transversely oblique, 1.4–1.8 × 1.2–1.6 mm, hilum region usually subterminal, rarely almost terminal.

1 or 2, ± obcompressed, broadly ellipsoid to subglobose, 1.4–1.9 × 1.2–1.4 mm, hilum subterminal.