Flora of North America species comparison

orange-yellow, slender.

yellow to orange, slender.

loose to dense, corymbiform;

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

dense, glomerulate or short-spiciform;

bracts at base of clusters and flowers (2–)4 or 5(–10), ovate-orbiculate to ovate-triangular, membranous, margins denticulate, apex erect, acute to cuspidate.

(0.5–)1–5 mm.

absent.

5-merous, 2.5–4.5 mm, membranous, not papillate or corolla lobes papillate;

calyx yellow, cylindric to narrowly campanulate, equaling corolla tube length, divided 1/2 its length, not reticulate, ± glossy, lobes lance-ovate to lanceolate, bases not overlapping, margins entire, midvein not carinate, apex acute to acuminate;

corolla white, drying creamy white, 2.2–4 mm, tube cylindric-campanulate to obconic, 1.2–2 mm, not saccate, lobes spreading to reflexed, lance-oblong to lance-ovate, equaling corolla tube length, margins entire or irregular, apex acute to acuminate or cuspidate, sometimes appearing tridentate, straight;

infrastaminal scales oblong to obovate, 1–1.7 mm, 4/5 corolla tube length, bridged at 0.2–0.4 mm, rounded, uniformly densely fimbriate, fimbriae 0.1–0.3 mm;

stamens exserted at full anthesis, shorter than corolla lobes;

filaments 0.3–0.7 mm;

anthers 0.3–0.7 × 0.2–0.5 mm;

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

5-merous, 5–6 mm, membranous, not papillate;

calyx straw yellow, campanulate, 1/2–2/3 corolla tube length, divided to base or nearly so, finely reticulate, shiny, lobes ovate, broadly overlapping, margins denticulate, midvein not carinate, apex acute to cuspidate;

corolla white, drying creamy, straw yellow, or light brown, 4–5.5 mm, tube cylindric, 2.4–3.5 mm, not saccate, lobes spreading to reflexed, ovate-lanceolate to oblong-ovate, 1/3–4/5 corolla tube length, margins entire, apex usually acute, sometimes cuspidate, straight;

infrastaminal scales oblong, 2.4–3.4 mm, equaling corolla tube length, bridged at 0.7–1.5 mm, rounded, uniformly densely fimbriate, fimbriae 0.2–0.4 mm;

stamens barely exserted, shorter than corolla lobes;

filaments 0.5–0.7 mm;

anthers 0.6–0.9 × 0.5–0.6 mm;

styles filiform, 2.5–3.3 mm, longer than ovary.

ellipsoid-ovoid, 1.6–2.5 × 1.7–2.4 mm, thickened and raised around relatively small interstylar aperture, not translucent, surrounded or capped by withered corolla, indehiscent.

subglobose or ovoid to subconic, 3.4–4.5 × 2.2–3 mm, ± raised and thickened around relatively small interstylar aperture, not translucent, capped by withered corolla, indehiscent.

1, ± obcompressed, broadly ellipsoid to subglobose, 1.3–1.5 × 1.2–1.4 mm, hilum region subterminal.

2–4, slightly obcompressed, subglobose, broadly ellipsoid to obovoid, 1.5–1.7 × 1.1–1.3 mm, hilum area subterminal.

= 30.