Flora of North America species comparison

orange-yellow, slender.

yellow, 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.

loose, umbelliform;

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

(0.5–)1–5 mm.

0.7–7 mm, papillate.

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.

4-merous, 3.5–4.5(–5) mm, membranous, perianth papillate;

calyx straw yellow, campanulate, 1/3–1/2 corolla tube length, divided 1/2 its length, not reticulate or shiny, lobes triangular-ovate, bases not overlapping, margins entire, midvein not carinate, apex acute;

corolla white, drying creamy white, 3–4 mm, tube cylindric, 1.5–2.5 mm, not saccate, lobes spreading to reflexed, lanceolate, equaling corolla tube, margins entire, often involute and appearing very narrow dry, apex acute, ± cucullate;

infrastaminal scales oblong, 1.3–2.1 mm, 1/2 corolla tube length, bridged at 0.4–0.8 mm, rounded, uniformly short-fimbriate, fimbriae 0.05–0.1 mm;

stamens exserted, shorter than corolla lobes;

filaments 0.3–0.6 mm;

anthers 0.4–0.6 × 0.3–0.4 mm;

styles filiform, 1.2–2.1 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.

globose, 1.5–2 × 1.6–1.9 mm, slightly thickened and raised around inconspicuous interstylar aperture, translucent, capped by withered corolla, dehiscence circumscissile.

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

2–4, angled, subglobose to broadly ellipsoid, 0.7–0.9 × 0.7–0.8 mm, hilum subterminal.

= 30.