Flora of North America species comparison

orange-yellow, slender.

yellow to orange, medium to coarse.

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 or dense, paniculiform, sometimes originating endogenously;

bracts at base of clusters 1, at base of pedicels 0 or 1, rarely 1 or 2(or 3) on pedicels, ovate to broadly triangular, membranous, margins entire or serrulate, apex acute to obtuse.

(0.5–)1–5 mm.

1–4.5 mm.

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 or)5-merous, 2–4 mm, membranous, not papillate;

calyx yellow-brown, cupulate or campanulate to narrowly campanulate, 1/2 to equaling corolla tube length, divided 1/2–2/3 its length, not reticulate or shiny, lobes ovate to suborbiculate or oblong, bases barely to notably overlapping, margins entire to serrulate, midvein not carinate, apex rounded or obtuse;

corolla white fresh or dry, 1.8–4 mm, tube broadly to narrowly campanulate, 1–2.5(–3) mm, not saccate, lobes spreading to reflexed, mostly ovate, (1/4–)1/3 or 1/2 to equaling corolla tube length, margins entire, apex rounded to obtuse, straight;

infrastaminal scales oblong, 1–2.5 mm, equaling corolla tube length, bridged at 0.4–0.8 mm, sparsely fimbriate, fimbriae 0.4–0.8 mm;

stamens exserted, shorter than to equaling corolla lobes;

filaments 0.4–0.7(–1) mm;

anthers 0.3–0.6 × 0.3–0.4 mm;

styles usually filiform, sometimes slightly subulate, (0.6–)1.2–2.2 mm, shorter than to equaling 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.

ovoid to conic-globose or subobpyriform, 2.5–4.5(–5.2) × 2–4(–5) mm, raised and ± thickened around relatively small to moderately large interstylar aperture, rarely apically narrowed into neck to 1 mm, not translucent, loosely surrounded or 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, obcompressed to obscurely angled, subglobose to broadly ovoid, 1.3–1.7(–2.2) × 1.2–1.6 mm, hilum region subterminal.

= 30.