Flora of North America species comparison

yellow to orange, slender to medium.

orange, medium to coarse.

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, corymbiform-glomerulate;

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

0.5–6 mm, usually papillate.

0.5–2 mm.

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, 4–5.5 mm, receptacle and calyx fleshy, corolla membranous, not papillate;

calyx brownish, shallowly cupulate, equaling corolla tube length, divided 1/3 its length, ± reticulate and shiny, lobes broadly ovate, bases overlapping, margins entire, midvein ± carinate, apex obtuse, sometimes with an appendage;

corolla white, drying creamy brown, 3.6–5 mm, tube campanulate, 1.5–3.5 mm, not saccate, lobes spreading to reflexed, broadly ovate, equaling corolla tube length, without hornlike appendages, margins entire, apex obtuse, straight;

infrastaminal scales ovate to oblong, 1.5–3.5 mm, equaling corolla tube length, bridged at 0.4–0.7 mm, truncate to rounded, sparsely fimbriate (sometimes only distally), fimbriae 0.1–0.4 mm;

stamens slightly exserted, shorter than corolla lobes;

filaments subulate, 0.5–0.9 mm;

anthers 0.5–0.9 × 0.3–0.4 mm;

styles stout, subulate, 0.9–2 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.

globose, 4–7 × 4–6 mm, thickened and raised around relatively large interstylar aperture, not translucent, surrounded by withered corolla at base, dehiscence circumscissile.

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.

4, angled, subglobose to broadly ellipsoid or ovoid, 1.9–2.3 × 1.9–2.3 mm, hilum region lateral.