Flora of North America species comparison

yellow to orange, slender to medium.

pale yellow, 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.

moderately dense, corymbiform or glomerulate;

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

0.5–6 mm, usually papillate.

0.5–1.5 mm, papillate.

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, 2–3 mm, fleshy, perianth cells convex, domelike, perianth papillate;

calyx yellow-brownish, shallowly cupulate, 1/2 corolla tube length, divided 1/2 its length, not reticulate or shiny, lobes triangular, bases not overlapping, margins entire, midvein not carinate, apex acute;

corolla white, drying brownish, 1.8–2.8 mm, tube campanulate-globulose, 1.3–2 mm, later urceolate, not saccate, lobes erect, ovate-triangular, 1/3–1/2 corolla tube length, margins entire, apex acute, inflexed;

infrastaminal scales absent;

stamens included, shorter than corolla lobes;

filaments 0.2–0.3 mm;

anthers 0.2–0.3 × 0.2–0.3 mm;

styles subulate, 0.4–0.8 mm, much 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.

subglobose or globose to slightly depressed-globose, 2–3 × 2–3.5 mm, thickened and raised around relatively large interstylar aperture, 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.

2–4, broadly ellipsoid to subglobose, obcompressed, 0.9–1.1 × 0.8–1 mm, hilum subterminal.